Company lists · Data refreshed September 2026
Top 25 Fintech api startups based in the United States
RevenueBase identified 559 company matches for fintech api startups associated with the United States as of September 2026 and tracks 218,719 professional contacts across them, including 68,386 with verified work emails. New York is the largest hub.
This list covers company matches for fintech api startups associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest fintech api startups based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 80,732 contacts → | ||||
Exact match “At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 38,885 contacts → | ||||
Exact match “Unlocking financial technology.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 13,124 contacts → | ||||
Exact match “Stripe builds programmable financial services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 11,147 contacts → | ||||
Exact match “Global Payments (NYSE: GPN) is a leading payment technology and software company that powers commerce for businesses of all sizes worldwide.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 6,759 contacts → | ||||
Exact match “Jack Henry (Nasdaq: JKHY) is a well-rounded financial technology company that strengthens the connections between people and their financial institutions through technology and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 6,608 contacts → | ||||
Exact match “First Data is now Fiserv (NASDAQ:FISV).” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 6,194 contacts → | ||||
Exact match “Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 4,303 contacts → | ||||
Exact match “The world’s leading brands trust Verifone for global payments.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 3,695 contacts → | ||||
Exact match “Deluxe, a trusted payments and data company, champions business so communities thrive.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 3,070 contacts → | ||||
Exact match “Payoneer is the financial technology company empowering the world’s small and medium-sized businesses to transact, do business, and grow globally.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 2,884 contacts → | ||||
Exact match “A global leader in payments processing and cross-border transactions, Euronet moves money in all the ways consumers and businesses depend upon.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 2,548 contacts → | ||||
Exact match “At Bottomline, we help businesses pay and get paid.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 2,409 contacts → | ||||
Exact match “InComm Payments is an innovative global payments technology provider.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 1,821 contacts → | ||||
Exact match “An award-winning global financial technology innovator powering credit, debit, prepaid, core banking, and money movement solutions, i2c unifies banking and payments in an…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 1,589 contacts → | ||||
Exact match “FLEETCOR Technologies rebranded as Corpay on March 25, 2024.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 1,410 contacts → | ||||
Exact match “Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 1,215 contacts → | ||||
Exact match “About Green Dot Green Dot Corporation (NYSE: GDOT) is a financial technology platform and registered bank holding company that builds banking and payment solutions to create…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 1,149 contacts → | ||||
Exact match “Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 981 contacts → | ||||
Exact match “Galileo, SoFi's Tech Platform, is a financial technology company that enables fintechs, banks, emerging and established brands to build differentiated financial solutions that…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 931 contacts → | ||||
Exact match “Cross River Bank provides technology infrastructure powering the future of financial services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 861 contacts → | ||||
Exact match “Volante Technologies is the trusted cloud payments modernization partner to financial businesses worldwide, giving them the freedom to evolve and innovate at record speed.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 651 contacts → | ||||
Exact match “MX Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 560 contacts → | ||||
Exact match “We are now FIS.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 553 contacts → | ||||
Exact match “MoneyLion (part of Gen) is a leader in financial technology, powering the next generation of personalized products and content, with a top consumer finance super app, a premier…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 402 contacts → | ||||
Exact match “Founded in 2018, Bakkt, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “fintech api startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 559 fintech api startups based in the United States
See the full list, filter by size, metro and specialty, and access 68,386 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Fintech api startups based in the United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 559 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “fintech api startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 68,386 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Fintech api startups by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fintech api startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fintech api startups are there based in the United States?
RevenueBase identified 559 company matches for fintech api startups associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
American Express tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most fintech api startups?
New York leads with 68 company records, followed by San Francisco (42) and Miami (25).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 68,386 professional contacts with verified work emails tracked across these 559 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 559 fintech api startups based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in San Francisco, United States
Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
Company intelligence · public preview
Top 25 fintech api startups based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 559 matching company records for fintech api startups based in the United States, with 218,719 tracked contacts and 68,386 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fintech api startups based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  American Expressamericanexpress.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 80,732 contacts → |
“At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  FISfisglobal.comHQ: Jacksonville, FL, United StatesReported employees: 10001+ | Jacksonville, FL, United States | 10001+ | Exact match | 38,885 contacts → |
“Unlocking financial technology.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Stripestripe.comHQ: South San Francisco, CA, United StatesReported employees: 5,001-10,000 | South San Francisco, CA, United States | 5,001-10,000 | Exact match | 13,124 contacts → |
“Stripe builds programmable financial services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Global Payments INCcompany.globalpayments.comHQ: Atlanta, GA, United StatesReported employees: 10001+ | Atlanta, GA, United States | 10001+ | Exact match | 11,147 contacts → |
“Global Payments (NYSE: GPN) is a leading payment technology and software company that powers commerce for businesses of all sizes worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Jack Henryjackhenry.comHQ: Monett, MO, United StatesReported employees: 5,001-10,000 | Monett, MO, United States | 5,001-10,000 | Exact match | 6,759 contacts → |
“Jack Henry (Nasdaq: JKHY) is a well-rounded financial technology company that strengthens the connections between people and their financial institutions through technology and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  First Data Corporationfiserv.comHQ: Brookfield, United StatesReported employees: 10001+ | Brookfield, United States | 10001+ | Exact match | 6,608 contacts → |
“First Data is now Fiserv (NASDAQ:FISV).” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Squaresquareup.comHQ: San Francisco, AZ, United StatesReported employees: 1,001-5,000 | San Francisco, AZ, United States | 1,001-5,000 | Exact match | 6,194 contacts → |
“Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Verifoneverifone.comHQ: New York, GA, United StatesReported employees: 1,001-5,000 | New York, GA, United States | 1,001-5,000 | Exact match | 4,303 contacts → |
“The world’s leading brands trust Verifone for global payments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Deluxedeluxe.comHQ: Minneapolis, MN, United StatesReported employees: 5,001-10,000 | Minneapolis, MN, United States | 5,001-10,000 | Exact match | 3,695 contacts → |
“Deluxe, a trusted payments and data company, champions business so communities thrive.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Payoneerpayoneer.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 3,070 contacts → |
“Payoneer is the financial technology company empowering the world’s small and medium-sized businesses to transact, do business, and grow globally.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Euroneteuronet.comHQ: Leawood, KS, United StatesReported employees: 10001+ | Leawood, KS, United States | 10001+ | Exact match | 2,884 contacts → |
“A global leader in payments processing and cross-border transactions, Euronet moves money in all the ways consumers and businesses depend upon.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Bottomlinebottomline.comHQ: Portsmouth, NH, United StatesReported employees: 1,001-5,000 | Portsmouth, NH, United States | 1,001-5,000 | Exact match | 2,548 contacts → |
“At Bottomline, we help businesses pay and get paid.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Incomm Paymentsincomm.comHQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 2,409 contacts → |
“InComm Payments is an innovative global payments technology provider.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  I2c INCi2cinc.comHQ: Redwood City, CA, United StatesReported employees: 1,001-5,000 | Redwood City, CA, United States | 1,001-5,000 | Exact match | 1,821 contacts → |
“An award-winning global financial technology innovator powering credit, debit, prepaid, core banking, and money movement solutions, i2c unifies banking and payments in an…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Fleetcorcorpay.comHQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 1,589 contacts → |
“FLEETCOR Technologies rebranded as Corpay on March 25, 2024.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  PLAIDplaid.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 1,410 contacts → |
“Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Green DOT Corporationgreendot.comHQ: Provo, UT, United StatesReported employees: 1,001-5,000 | Provo, UT, United States | 1,001-5,000 | Exact match | 1,215 contacts → |
“About Green Dot Green Dot Corporation (NYSE: GDOT) is a financial technology platform and registered bank holding company that builds banking and payment solutions to create…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Mercurymercury.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 1,149 contacts → |
“Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Galileo Financial Technologiesgalileo-ft.comHQ: Sandy, UT, United StatesReported employees: 1,001-5,000 | Sandy, UT, United States | 1,001-5,000 | Exact match | 981 contacts → |
“Galileo, SoFi's Tech Platform, is a financial technology company that enables fintechs, banks, emerging and established brands to build differentiated financial solutions that…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Cross Rivercrossriver.comHQ: Fort Lee, NJ, United StatesReported employees: 501-1,000 | Fort Lee, NJ, United States | 501-1,000 | Exact match | 931 contacts → |
“Cross River Bank provides technology infrastructure powering the future of financial services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Volante Technologiesvolantetech.comHQ: Jersey City, NJ, United StatesReported employees: 501-1,000 | Jersey City, NJ, United States | 501-1,000 | Exact match | 861 contacts → |
“Volante Technologies is the trusted cloud payments modernization partner to financial businesses worldwide, giving them the freedom to evolve and innovate at record speed.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  MXmx.comHQ: Lehi, UT, United StatesReported employees: 501-1,000 | Lehi, UT, United States | 501-1,000 | Exact match | 651 contacts → |
“MX Technologies, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Vantivworldpay.comHQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 560 contacts → |
“We are now FIS.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Moneylionmoneylion.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 553 contacts → |
“MoneyLion (part of Gen) is a leader in financial technology, powering the next generation of personalized products and content, with a top consumer finance super app, a premier…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  BAKKTbakkt.comHQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 402 contacts → |
“Founded in 2018, Bakkt, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 559 company matches
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Fintech api startups: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
558 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 559 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fintech api startups by metro
Questions about this company list
What does Exact match mean for fintech api startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fintech api startups did RevenueBase find based in the United States?
The saved snapshot records 559 matching company records, 218,719 tracked contacts and 68,386 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in San Francisco, United States
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 fintech api startups based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/fintech-api-startups/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
Company intelligence · public preview
Top 25 fintech api startups based in the United States
RevenueBase records 559 matching company records for fintech api startups based in the United States, with 218,719 tracked contacts and 68,386 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fintech api startups based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | American Expressamericanexpress.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 80,732 contacts → |
“At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | FISfisglobal.com HQ: Jacksonville, FL, United StatesReported employees: 10001+ | Jacksonville, FL, United States | 10001+ | Exact match | 38,885 contacts → |
“Unlocking financial technology.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Stripestripe.com HQ: South San Francisco, CA, United StatesReported employees: 5,001-10,000 | South San Francisco, CA, United States | 5,001-10,000 | Exact match | 13,124 contacts → |
“Stripe builds programmable financial services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Global Payments INCcompany.globalpayments.com HQ: Atlanta, GA, United StatesReported employees: 10001+ | Atlanta, GA, United States | 10001+ | Exact match | 11,147 contacts → |
“Global Payments (NYSE: GPN) is a leading payment technology and software company that powers commerce for businesses of all sizes worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Jack Henryjackhenry.com HQ: Monett, MO, United StatesReported employees: 5,001-10,000 | Monett, MO, United States | 5,001-10,000 | Exact match | 6,759 contacts → |
“Jack Henry (Nasdaq: JKHY) is a well-rounded financial technology company that strengthens the connections between people and their financial institutions through technology and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | First Data Corporationfiserv.com HQ: Brookfield, United StatesReported employees: 10001+ | Brookfield, United States | 10001+ | Exact match | 6,608 contacts → |
“First Data is now Fiserv (NASDAQ:FISV).” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Squaresquareup.com HQ: San Francisco, AZ, United StatesReported employees: 1,001-5,000 | San Francisco, AZ, United States | 1,001-5,000 | Exact match | 6,194 contacts → |
“Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Verifoneverifone.com HQ: New York, GA, United StatesReported employees: 1,001-5,000 | New York, GA, United States | 1,001-5,000 | Exact match | 4,303 contacts → |
“The world’s leading brands trust Verifone for global payments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Deluxedeluxe.com HQ: Minneapolis, MN, United StatesReported employees: 5,001-10,000 | Minneapolis, MN, United States | 5,001-10,000 | Exact match | 3,695 contacts → |
“Deluxe, a trusted payments and data company, champions business so communities thrive.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Payoneerpayoneer.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 3,070 contacts → |
“Payoneer is the financial technology company empowering the world’s small and medium-sized businesses to transact, do business, and grow globally.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Euroneteuronet.com HQ: Leawood, KS, United StatesReported employees: 10001+ | Leawood, KS, United States | 10001+ | Exact match | 2,884 contacts → |
“A global leader in payments processing and cross-border transactions, Euronet moves money in all the ways consumers and businesses depend upon.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Bottomlinebottomline.com HQ: Portsmouth, NH, United StatesReported employees: 1,001-5,000 | Portsmouth, NH, United States | 1,001-5,000 | Exact match | 2,548 contacts → |
“At Bottomline, we help businesses pay and get paid.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Incomm Paymentsincomm.com HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 2,409 contacts → |
“InComm Payments is an innovative global payments technology provider.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | I2c INCi2cinc.com HQ: Redwood City, CA, United StatesReported employees: 1,001-5,000 | Redwood City, CA, United States | 1,001-5,000 | Exact match | 1,821 contacts → |
“An award-winning global financial technology innovator powering credit, debit, prepaid, core banking, and money movement solutions, i2c unifies banking and payments in an…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Fleetcorcorpay.com HQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 1,589 contacts → |
“FLEETCOR Technologies rebranded as Corpay on March 25, 2024.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | PLAIDplaid.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 1,410 contacts → |
“Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Green DOT Corporationgreendot.com HQ: Provo, UT, United StatesReported employees: 1,001-5,000 | Provo, UT, United States | 1,001-5,000 | Exact match | 1,215 contacts → |
“About Green Dot Green Dot Corporation (NYSE: GDOT) is a financial technology platform and registered bank holding company that builds banking and payment solutions to create…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Mercurymercury.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 1,149 contacts → |
“Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Galileo Financial Technologiesgalileo-ft.com HQ: Sandy, UT, United StatesReported employees: 1,001-5,000 | Sandy, UT, United States | 1,001-5,000 | Exact match | 981 contacts → |
“Galileo, SoFi's Tech Platform, is a financial technology company that enables fintechs, banks, emerging and established brands to build differentiated financial solutions that…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cross Rivercrossriver.com HQ: Fort Lee, NJ, United StatesReported employees: 501-1,000 | Fort Lee, NJ, United States | 501-1,000 | Exact match | 931 contacts → |
“Cross River Bank provides technology infrastructure powering the future of financial services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Volante Technologiesvolantetech.com HQ: Jersey City, NJ, United StatesReported employees: 501-1,000 | Jersey City, NJ, United States | 501-1,000 | Exact match | 861 contacts → |
“Volante Technologies is the trusted cloud payments modernization partner to financial businesses worldwide, giving them the freedom to evolve and innovate at record speed.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MXmx.com HQ: Lehi, UT, United StatesReported employees: 501-1,000 | Lehi, UT, United States | 501-1,000 | Exact match | 651 contacts → |
“MX Technologies, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Vantivworldpay.com HQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 560 contacts → |
“We are now FIS.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Moneylionmoneylion.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 553 contacts → |
“MoneyLion (part of Gen) is a leader in financial technology, powering the next generation of personalized products and content, with a top consumer finance super app, a premier…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | BAKKTbakkt.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 402 contacts → |
“Founded in 2018, Bakkt, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 559 company matches
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Fintech api startups: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
558 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 559 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fintech api startups by metro
Questions about this company list
What does Exact match mean for fintech api startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fintech api startups did RevenueBase find based in the United States?
The saved snapshot records 559 matching company records, 218,719 tracked contacts and 68,386 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
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- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in San Francisco, United States
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 fintech api startups based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/fintech-api-startups/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Fintech api startups based in Noida, India