# Tax1099, $349 yearly, Scale, Real Time TIN Match: Business verification API

> Instantly verify Taxpayer Identification Numbers in real-time, ensuring accuracy and compliance at the speed of your business.

Tax1099's business verification API on its Scale plan. It costs $1,000.00 per 1,000 companies. Tax1099's docs list none of the 11 fields on our checklist: Registered name, Entity number, Tax ID, Entity type and 7 more.
We haven't run Tax1099 through [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt) yet.
Half of the 935 plans we rank by price cost $7.895 per 1,000 companies or less. This plan costs less per 1,000 companies than 4% of the 935 plans.
[CharityAPI's $15 monthly plan](https://datacircle.dev/business-verification-apis/charityapi/15-monthly-paid-get-api-organizations-ein/llms.txt) is the cheapest paid plan per 1,000 companies. CharityAPI's plan covers companies in the United States only. CharityAPI's $15 monthly plan charges nothing per call. You get as many companies as CharityAPI's rate limit allows.
[Scoris's €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris's €19 pack costs more up front than CharityAPI's $15 monthly plan.
[GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) and [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) are the best business verification API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/business-verification-apis/tax1099/349-yearly-scale-real-time-tin-match
- [Business verification API: the 12 best providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://www.tax1099.com/tax-1099-efile-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: Docs behind sign-up, Real Time TIN Match
- API key: with the plan, on https://www.tax1099.com/tax-1099-efile-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Its API docs: https://developer.tax1099.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Sold by: Tax1099 (https://www.tax1099.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 companies: $1,000.00
- Per: call
- Billing: yearly
- $ a month: $29.08

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Bulk TIN Match

## Overage

- $ per 1,000 companies: $1,000.00

## In their words

- Their pitch: Instantly verify Taxpayer Identification Numbers in real-time, ensuring accuracy and compliance at the speed of your business.

## Data

- Freshness: live
- Countries: United States
- Keep data: no limit
- Use data: Zenwork grants to You a non-exclusive, non-transferable, revocable right and license to copy and use the Developer Materials and use the Test Accounts solely for the purpose of designing Integrated Applications to integrate with or share data between or otherwise communicate with the Services in the manner described by You as part of the registration process, or otherwise in accordance with the terms of this Agreement. [...] 2. Restrictions: You may not: a. use the Developer Materials or Test Account to design or develop anything other than an Integrated Application, b. make any more copies of the Developer Materials than are reasonably necessary for the authorized use and backup and archival purposes, c. modify, create derivative works of, reverse engineer, reverse compile, or disassemble the Developer Materials or the Service, d. remove any trademarks, logos, copyright notices, proprietary notices or labels displayed on the Developer Materials or the Service or any copies made by You, or e. distribute, sell, lease, rent, lend, sublicense, or provide any access to any part of the Developer Materials or Test Account to any third Party except as included within and necessary to distribute an Integrated Application. You have no authority to distribute the Service or make it available to Your customers or any other third parties, unless granted in a separate agreement between You and Zenwork. [...] You will use the Developer Materials, the Key and the Integrated Application only for purposes that are permitted by this Agreement and any applicable law, regulation or generally accepted practices or guidelines in the relevant jurisdictions [...]. 8. Acceptable Use: [...] if Your Integrated Application causes undue technical stress to the Zenwork platform, interferes with use of the Zenwork Service by others, or transmits information or transactions that Zenwork believes are illegal or fraudulent, Zenwork reserves the right to revoke Your Key and block access by You, Your Representatives and Your customers/end user immediately and indefinitely.

## Plan

- Pay: $349
- You get: 250 requests a year
- Enough for: 250 calls a year

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Scale
- Who can get it: organizations with an Integrated Application described to Zenwork in a Quote, under its API License and Development Agreement

## The only field the plan's answer can hold

TIN match status

## Tax1099's plans (1)

- [Tax1099, $349 yearly, Scale, Real Time TIN Match](https://datacircle.dev/business-verification-apis/tax1099/349-yearly-scale-real-time-tin-match/llms.txt): $1,000.00 per 1,000, 0% complete, live

## Tax1099's calls (2)

- Docs behind sign-up, Bulk TIN Match: [Tax1099, $349 yearly, Scale, Bulk TIN Match](https://datacircle.dev/business-verification-apis/tax1099/349-yearly-scale-bulk-tin-match/llms.txt)
- Docs behind sign-up, Real Time TIN Match: [Tax1099, $349 yearly, Scale, Real Time TIN Match](https://datacircle.dev/business-verification-apis/tax1099/349-yearly-scale-real-time-tin-match/llms.txt)

## Tax1099's APIs (1)

- [Tax1099: business verification API pricing, 1 plan, Real Time TIN Match](https://datacircle.dev/business-verification-apis/tax1099/349-yearly-scale-real-time-tin-match/llms.txt)

## Tax1099: business verification API alternatives

- [Strale, top-up from €10, Prepaid wallet, POST /v1/do, Japanese Company Data](https://datacircle.dev/business-verification-apis/strale/top-up-from-10-prepaid-wallet-post-v1-do-japanese-company-data/llms.txt): $900.24 per 1,000, 55% complete, live
- [TINCheck, $49.95 pack](https://datacircle.dev/business-verification-apis/tincheck/49-95-pack/llms.txt): $999.00 per 1,000, 9% complete, live
- [TIN Comply, $100 pack, 100-Pack, POST /api/v1/validate/irs-tin-name-matching](https://datacircle.dev/business-verification-apis/tin-comply/100-pack-100-pack-post-api-v1-validate-irs-tin-name-matching/llms.txt): $1,000.00 per 1,000, 0% complete, live
- [Cobalt Intelligence, $1,000 monthly, Committed volume tier, 1,000 lookups, GET /v1/search](https://datacircle.dev/business-verification-apis/cobalt-intelligence/1000-monthly-committed-volume-tier-1000-lookups-get-v1-search/llms.txt): $1,000.00 per 1,000, 91% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://developer.tax1099.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://www.tax1099.com/api-license-agreement?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://www.tax1099.com/features/tin-lookup-tin-check-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://www.tax1099.com/tax-1099-efile-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://www.tax1099.com/tax1099-api-integration?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing