Company lists · Data refreshed September 2026
Top 25 Accounting software with payment processing companies based in the United States
RevenueBase identified 440 accounting software with payment processing companies headquartered in the United States as of September 2026 and tracks 16,275 professional contacts across them, including 6,547 with verified work emails. Miami is the largest hub.
This list covers accounting software with payment processing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 accounting software with payment processing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,194 contacts → | ||||
Indirect evidence “Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 633 contacts → | ||||
Partial evidence “Backed by Aquiline Capital Partners and ADIA, Fullsteam is a dynamic and growing team of over 2,100 employees committed to driving innovation and delivering best-in-class software…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 359 contacts → | ||||
Partial evidence “Payments shouldn’t live outside your business systems.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 331 contacts → | ||||
Partial evidence “Finally is a fast growing fintech company whose mission is to help small & medium sized businesses automate their accounting and finance.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 327 contacts → | ||||
Strong evidence “VizyPay is revolutionizing the payments industry by offering a credit card processing model that focuses on powerful payment solutions, real human customer support, and simple…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 313 contacts → | ||||
Strong evidence “Celero Commerce offers payment processing services, business management software, and data intelligence to small and medium-sized businesses, in one holistic platform.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 300 contacts → | ||||
Partial evidence “Echelon Payment Solutions Group Built by sales partners, for sales partners-merchant by merchant.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 217 contacts → | ||||
Strong evidence “Payment Solutions for Every Business 0% Processing Fee Program POS Systems • Local Sales & Support Helping businesses save more with every transaction.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 186 contacts → | ||||
Indirect evidence “Get Beyond strives to help owners of small and mid-size businesses save time and reduce costs by simplifying their complex back office operations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 172 contacts → | ||||
Indirect evidence “PairSoft, one of the strongest financial automation platforms for mid-market and enterprise organizations, comprises a product lineup that natively integrates with Microsoft…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 152 contacts → | ||||
Strong evidence “FlashBanc provides cloud-based electronic payments and social marketing software services to thousands of small, medium and large businesses, and has the Inc.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 105 contacts → | ||||
Indirect evidence “Deskera is an award-winning integrated platform that enables SMBs to scale faster with fewer tools.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 101 contacts → | ||||
Indirect evidence “Trusted by more than 1M businesses in over 100 countries, Veem is the market leader in automating accounts payables and receivables for businesses.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 99 contacts → | ||||
Indirect evidence “Autobooks is simple banking that works for small businesses.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 99 contacts → | ||||
Indirect evidence “Running a small business can feel overwhelming.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 80 contacts → | ||||
Partial evidence “Ranked by the Nilson Report as one of the largest payment processors in the United States, UBC currently handles the merchant accounts for over businesses and processes in excess…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 78 contacts → | ||||
Strong evidence “United TranzActions (UTA) is a trusted industry leader providing comprehensive payment processing and digital payment solutions to thousands of businesses across the U.S.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 56 contacts → | ||||
Strong evidence “Skyline Payments powers B2B transactions for small and midsize businesses, directly integrating payments into ERP, accounting, and eCommerce systems.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 56 contacts → | ||||
Strong evidence “bluu™ is a one-stop shop for payment processing, POS hardware and software, online ordering, online appointment booking, gift card and loyalty program solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 54 contacts → | ||||
Partial evidence “We power the payments that help grow your business.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 53 contacts → | ||||
Partial evidence “Businesses come to PaySimple with a simple, but important need – a better way to accept payments.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 47 contacts → | ||||
Strong evidence “AccountMate Software Corporation Founded in 1984, AccountMate develops and markets fully modifiable business accounting software.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 46 contacts → | ||||
Partial evidence “BNG Payments is now part of Kaseya, the leading security and IT management company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 42 contacts → | ||||
Strong evidence “TRX Services is a leader in payment processing with many decades of experience offering financial services that enable merchants and other businesses to effectively accept…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 42 contacts → | ||||
Partial evidence “Integrity Payment Systems is a leading provider of merchant accounts and payment solutions for small and mid-sized businesses.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: accounting software with payment processing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names accounting software with payment processing companies.
- Partial evidence
- Its own public description names part of accounting software with payment processing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name accounting software with payment processing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 440 accounting software with payment processing companies based in the United States
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Accounting software with payment processing companies based in the United States at a glance
As of Sep 27, 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 440 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among accounting software with payment processing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “accounting software with payment processing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names accounting software with payment processing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among accounting software with payment processing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 6,547 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names accounting software with payment processing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many accounting software with payment processing companies are there based in the United States?
RevenueBase identified 440 accounting software with payment processing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Square, headquartered in Scottsdale, tops this list with the largest team on record.
Which city has the most accounting software with payment processing companies?
Miami leads with 12 headquartered companies, followed by New York (12) and San Francisco (11).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,547 verified decision-maker contacts tracked across these 440 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
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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 Smart Search, 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.
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