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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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: [email protected]