IRS

aid: irs
name: IRS
description: The US Internal Revenue Service (IRS) provides REST APIs and Application-to-Application (A2A) interfaces for
  tax information access, identity verification, income verification, information return filing, and taxpayer account data.
  Authorized applications can integrate with IRS e-Services for TIN matching, the Transcript Delivery System (TDS), the Income
  Verification Express Service (IVES), the Information Return Intake System (IRIS) for 1099 series filings, and the Modernized
  e-File (MeF) system for electronic tax return submission. Access requires enrollment in IRS e-Services and obtaining an
  API client ID.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/irs/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- IRS
- Tax
- Federal Government
- TIN Matching
- Income Verification
- Information Returns
- e-File
- Identity Verification
- Taxpayer
apis:
- aid: irs:tin-matching
  name: IRS TIN Matching API
  description: Allows payers to submit Taxpayer Identification Number (TIN) and name combinations to be matched against IRS
    records before filing information returns. Supports interactive matching of up to 25 combinations with immediate results
    and bulk matching of up to 100,000 combinations with results within 24 hours. Available as part of IRS e-Services.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.irs.gov/tax-professionals/taxpayer-identification-number-tin-matching
  baseURL: https://la.www4.irs.gov
  tags:
  - TIN Matching
  - Taxpayer Identification
  - Information Returns
  - Validation
  properties:
  - type: Documentation
    url: https://www.irs.gov/tax-professionals/taxpayer-identification-number-tin-matching
  - type: GettingStarted
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
- aid: irs:ives
  name: IRS Income Verification Express Service (IVES) API
  description: Application-to-Application (A2A) API allowing authorized participants such as lenders, banks, credit unions,
    and financial institutions to request IRS tax transcripts for income verification purposes. Supports high-volume automated
    transcript requests with delivery in hours. Charges $4 per transcript requested. Requires IVES participant enrollment
    and API client ID.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.irs.gov/individuals/income-verification-express-service-for-participants
  baseURL: https://la.www4.irs.gov
  tags:
  - Income Verification
  - Tax Transcripts
  - Mortgage
  - Lending
  - Financial Services
  properties:
  - type: Documentation
    url: https://www.irs.gov/individuals/income-verification-express-service-for-participants
  - type: GettingStarted
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
  - type: Pricing
    url: plans/irs-plans-pricing.yml
- aid: irs:iris
  name: IRS Information Return Intake System (IRIS) API
  description: Application-to-Application (A2A) API for electronic filing of 1099 series information returns directly with
    the IRS. Supports high-volume automated submission by software developers and large-scale filers. Specifications are documented
    in IRS Publication 5718 (IRIS Electronic Filing A2A Specifications). Launched in January 2023 as the successor to the
    FIRE system.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.irs.gov/newsroom/irs-opens-free-portal-to-file-information-returns-new-electronic-option-can-reduce-millions-of-paper-forms-1099-estimated-to-be-filed-by-businesses-in-2023
  baseURL: https://la.www4.irs.gov
  tags:
  - 1099
  - Information Returns
  - e-File
  - Tax Filing
  properties:
  - type: Documentation
    url: https://www.irs.gov/e-file-providers/information-and-technical-guidance-for-software-developers-and-transmitters
  - type: GettingStarted
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
- aid: irs:mef
  name: IRS Modernized e-File (MeF) API
  description: Application-to-Application (A2A) system enabling authorized software developers and transmitters to electronically
    submit tax returns directly to the IRS. Supports individual and business tax forms including Form 2290, Form 720, Form
    8849, and more. Requires TLS 1.2 or higher. Technical specifications available in IRS Publication 4164. Current WSDL version
    is R10.9 for tax year 2025/processing year 2026.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.irs.gov/e-file-providers/information-and-technical-guidance-for-software-developers-and-transmitters
  baseURL: https://la.www4.irs.gov
  tags:
  - e-File
  - Tax Returns
  - Electronic Filing
  - Software Developers
  properties:
  - type: Documentation
    url: https://www.irs.gov/e-file-providers/information-and-technical-guidance-for-software-developers-and-transmitters
  - type: GettingStarted
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
  - type: StatusPage
    url: https://www.irs.gov/e-file-providers/modernized-e-file-mef-status
- aid: irs:tds
  name: IRS Transcript Delivery System (TDS) API
  description: e-Services API allowing authorized tax professionals and institutions to retrieve tax transcripts programmatically.
    Part of the IRS e-Services suite alongside TIN Matching and the Secure Object Repository (SOR). Requires API client ID
    obtained through IRS e-Services enrollment.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.irs.gov/tax-professionals/get-an-api-client-id
  baseURL: https://la.www4.irs.gov
  tags:
  - Tax Transcripts
  - e-Services
  - Tax Professionals
  properties:
  - type: Documentation
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
  - type: GettingStarted
    url: https://www.irs.gov/tax-professionals/get-an-api-client-id
common:
- type: Website
  url: https://www.irs.gov/
- type: Documentation
  url: https://www.irs.gov/tax-professionals/get-an-api-client-id
- type: GettingStarted
  url: https://www.irs.gov/tax-professionals/get-an-api-client-id
- type: DeveloperPortal
  url: https://www.irs.gov/e-file-providers/information-and-technical-guidance-for-software-developers-and-transmitters
- type: StatusPage
  url: https://www.irs.gov/e-file-providers/modernized-e-file-mef-status
- type: Plans
  url: plans/irs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/irs-rate-limits.yml
- type: FinOps
  url: finops/irs-finops.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/irs
- type: X
  url: https://x.com/irsnews
- type: Blog
  url: https://www.irs.gov/newsroom
- type: TermsOfService
  url: https://www.irs.gov/privacy-disclosure/irs-website-privacy-policy-statement
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com