Company lists · Data refreshed November 2026
Top 15 Tax calculation api providers based in the United States
RevenueBase identified 25 company matches for tax calculation api providers associated with the United States as of November 2026 and tracks 3,446 professional contacts across them, including 1,732 with verified work emails. San Francisco is the largest hub.
This list covers company matches for tax calculation api providers 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 November 6, 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 15 largest tax calculation api providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,636 contacts → | ||||
Exact match “Vertex is the Decision-to-Defense™ global indirect tax and compliance company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 182 contacts → | ||||
Exact match “Anrok is the intelligent tax infrastructure for global businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 161 contacts → | ||||
Exact match “Sales tax and VAT, solved.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 137 contacts → | ||||
Exact match “Kintsugi is automating sales tax for every company globally.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 74 contacts → | ||||
Exact match “TaxCloud is a sales tax compliance solution for growing ecommerce and SaaS businesses that combines powerful automation with real human support.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 60 contacts → | ||||
Exact match “TTR, The Tax Research Company, provides everything sales, use, and transaction tax-related.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 57 contacts → | ||||
Exact match “CereTax is the first tax automation solution built to take advantage of the countless technological advancements over the last decade and engineered in a way that truly transforms…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 34 contacts → | ||||
Exact match “Sphere automates tax compliance for the $200T+ in goods and services sold across borders every year.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 20 contacts → | ||||
Exact match “TaxJar was founded in 2013 to help e-commerce companies automate the entire sales tax lifecycle from calculations and nexus tracking to reporting and filing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 12 contacts → | ||||
Exact match “At Sales Tax DataLINK, we are dedicated to delivering a level of excellence that differentiates us from others.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 8 contacts → | ||||
Exact match “TaxDo combines cutting-edge automation with a global network of leading tax partners to simplify indirect tax compliance for businesses of all sizes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 6 contacts → | ||||
Exact match “Integrated Tax Services Invoicing Done Right Our team has over 25 years of experience providing strategic tax services and improved profitability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “Junologix delivers the industry’s most sophisticated, cloud-native compliance platform for managing highly complex, multi-jurisdictional fuel tax and excise obligations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match “AccurateTax provides a software-as-a-service (SaaS) platform for online merchants to accurately calculate sales tax on all orders, regardless of origination or destination, and no…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 1 contacts → | ||||
Exact match “Revolutionize tax data access with Chart's API, seamlessly integrating with IRS, state agencies, and all major tax prep software.” Recorded in the RevenueBase company graph · Nov 6, 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 “tax calculation api providers”. 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 15 of 25 tax calculation api providers based in the United States
See the full list, filter by size, metro and specialty, and access 1,732 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Tax calculation api providers based in the United States at a glance
As of Nov 6, 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 25 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 “tax calculation api providers” 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 1,732 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 November 6, 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.
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 “tax calculation api providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many tax calculation api providers are there based in the United States?
RevenueBase identified 25 company matches for tax calculation api providers associated with the United States as of November 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?
Vertex INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most tax calculation api providers?
San Francisco leads with 6 company records, followed by Boston (2) and Alpharetta (1).
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 1,732 professional contacts with verified work emails tracked across these 25 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 25 tax calculation api providers based in the United States. Start with a free account, no credit card.
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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 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.
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Company intelligence · public preview
Top 15 tax calculation api providers 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 25 matching company records for tax calculation api providers based in the United States, with 3,446 tracked contacts and 1,732 verified work emails.
This public preview shows 15 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 15 tax calculation api providers 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 |  Vertex INCvertexinc.comHQ: King Of Prussia, PA, United StatesReported employees: 1,001-5,000 | King Of Prussia, PA, United States | 1,001-5,000 | Exact match | 2,636 contacts → |
“Vertex is the Decision-to-Defense™ global indirect tax and compliance company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ANROKanrok.comHQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 182 contacts → |
“Anrok is the intelligent tax infrastructure for global businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Numeralnumeral.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 161 contacts → |
“Sales tax and VAT, solved.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Kintsugitrykintsugi.comHQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 137 contacts → |
“Kintsugi is automating sales tax for every company globally.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Taxcloudtaxcloud.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 74 contacts → |
“TaxCloud is a sales tax compliance solution for growing ecommerce and SaaS businesses that combines powerful automation with real human support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  TTRavalara.comHQ: Mcminnville, OR, United StatesReported employees: 51-200 | Mcminnville, OR, United States | 51-200 | Exact match | 60 contacts → |
“TTR, The Tax Research Company, provides everything sales, use, and transaction tax-related.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Ceretaxceretax.comHQ: Alpharetta, GA, United StatesReported employees: 11-50 | Alpharetta, GA, United States | 11-50 | Exact match | 57 contacts → |
“CereTax is the first tax automation solution built to take advantage of the countless technological advancements over the last decade and engineered in a way that truly transforms…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Spheregetsphere.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 34 contacts → |
“Sphere automates tax compliance for the $200T+ in goods and services sold across borders every year.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Taxjar A Stripe Companytaxjar.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 20 contacts → |
“TaxJar was founded in 2013 to help e-commerce companies automate the entire sales tax lifecycle from calculations and nexus tracking to reporting and filing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Sales TAX Datalinksalestaxdatalink.comHQ: Bentonville, AR, United StatesReported employees: 11-50 | Bentonville, AR, United States | 11-50 | Exact match | 12 contacts → |
“At Sales Tax DataLINK, we are dedicated to delivering a level of excellence that differentiates us from others.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  TAXDOtaxdo.comHQ: Tampa, FL, United StatesReported employees: 11-50 | Tampa, FL, United States | 11-50 | Exact match | 8 contacts → |
“TaxDo combines cutting-edge automation with a global network of leading tax partners to simplify indirect tax compliance for businesses of all sizes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Apic TAXapictax.comHQ: Buford, GA, United StatesReported employees: 1-10 | Buford, GA, United States | 1-10 | Exact match | 6 contacts → |
“Integrated Tax Services Invoicing Done Right Our team has over 25 years of experience providing strategic tax services and improved profitability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Junologixjunologix.comHQ: Laguna Beach, CA, United StatesReported employees: 11-50 | Laguna Beach, CA, United States | 11-50 | Exact match | 3 contacts → |
“Junologix delivers the industry’s most sophisticated, cloud-native compliance platform for managing highly complex, multi-jurisdictional fuel tax and excise obligations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Accuratetaxaccuratetax.comHQ: Viera, FL, United StatesReported employees: 1-10 | Viera, FL, United States | 1-10 | Exact match | 3 contacts → |
“AccurateTax provides a software-as-a-service (SaaS) platform for online merchants to accurately calculate sales tax on all orders, regardless of origination or destination, and no…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Chart YC W23trychart.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Revolutionize tax data access with Chart's API, seamlessly integrating with IRS, state agencies, and all major tax prep software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 25 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
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Tax calculation api providers: dataset insights
November 6, 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
25 records in the displayed employee bands.
0 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 25 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for tax calculation api providers?
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 tax calculation api providers did RevenueBase find based in the United States?
The saved snapshot records 25 matching company records, 3,446 tracked contacts and 1,732 verified emails. The public preview displays 15 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: November 6, 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
Cite this list
RevenueBase Data Team. Top 15 tax calculation api providers based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/tax-calculation-api-providers/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
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 15 tax calculation api providers based in the United States
RevenueBase records 25 matching company records for tax calculation api providers based in the United States, with 3,446 tracked contacts and 1,732 verified work emails.
This public preview shows 15 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 15 tax calculation api providers 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 | Vertex INCvertexinc.com HQ: King Of Prussia, PA, United StatesReported employees: 1,001-5,000 | King Of Prussia, PA, United States | 1,001-5,000 | Exact match | 2,636 contacts → |
“Vertex is the Decision-to-Defense™ global indirect tax and compliance company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ANROKanrok.com HQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 182 contacts → |
“Anrok is the intelligent tax infrastructure for global businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Numeralnumeral.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 161 contacts → |
“Sales tax and VAT, solved.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Kintsugitrykintsugi.com HQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 137 contacts → |
“Kintsugi is automating sales tax for every company globally.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Taxcloudtaxcloud.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 74 contacts → |
“TaxCloud is a sales tax compliance solution for growing ecommerce and SaaS businesses that combines powerful automation with real human support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TTRavalara.com HQ: Mcminnville, OR, United StatesReported employees: 51-200 | Mcminnville, OR, United States | 51-200 | Exact match | 60 contacts → |
“TTR, The Tax Research Company, provides everything sales, use, and transaction tax-related.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ceretaxceretax.com HQ: Alpharetta, GA, United StatesReported employees: 11-50 | Alpharetta, GA, United States | 11-50 | Exact match | 57 contacts → |
“CereTax is the first tax automation solution built to take advantage of the countless technological advancements over the last decade and engineered in a way that truly transforms…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Spheregetsphere.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 34 contacts → |
“Sphere automates tax compliance for the $200T+ in goods and services sold across borders every year.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Taxjar A Stripe Companytaxjar.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 20 contacts → |
“TaxJar was founded in 2013 to help e-commerce companies automate the entire sales tax lifecycle from calculations and nexus tracking to reporting and filing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Sales TAX Datalinksalestaxdatalink.com HQ: Bentonville, AR, United StatesReported employees: 11-50 | Bentonville, AR, United States | 11-50 | Exact match | 12 contacts → |
“At Sales Tax DataLINK, we are dedicated to delivering a level of excellence that differentiates us from others.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | TAXDOtaxdo.com HQ: Tampa, FL, United StatesReported employees: 11-50 | Tampa, FL, United States | 11-50 | Exact match | 8 contacts → |
“TaxDo combines cutting-edge automation with a global network of leading tax partners to simplify indirect tax compliance for businesses of all sizes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Apic TAXapictax.com HQ: Buford, GA, United StatesReported employees: 1-10 | Buford, GA, United States | 1-10 | Exact match | 6 contacts → |
“Integrated Tax Services Invoicing Done Right Our team has over 25 years of experience providing strategic tax services and improved profitability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Junologixjunologix.com HQ: Laguna Beach, CA, United StatesReported employees: 11-50 | Laguna Beach, CA, United States | 11-50 | Exact match | 3 contacts → |
“Junologix delivers the industry’s most sophisticated, cloud-native compliance platform for managing highly complex, multi-jurisdictional fuel tax and excise obligations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Accuratetaxaccuratetax.com HQ: Viera, FL, United StatesReported employees: 1-10 | Viera, FL, United States | 1-10 | Exact match | 3 contacts → |
“AccurateTax provides a software-as-a-service (SaaS) platform for online merchants to accurately calculate sales tax on all orders, regardless of origination or destination, and no…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Chart YC W23trychart.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Revolutionize tax data access with Chart's API, seamlessly integrating with IRS, state agencies, and all major tax prep software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 25 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Tax calculation api providers: dataset insights
November 6, 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
25 records in the displayed employee bands.
0 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 25 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for tax calculation api providers?
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 tax calculation api providers did RevenueBase find based in the United States?
The saved snapshot records 25 matching company records, 3,446 tracked contacts and 1,732 verified emails. The public preview displays 15 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: November 6, 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.
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Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 15 tax calculation api providers based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/tax-calculation-api-providers/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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