Internal Revenue Service

The Internal Revenue Service (IRS) is the United States federal tax collection agency and a bureau of the Department of the Treasury. The IRS publishes developer resources for tax software providers and transmitters including the Modernized e-File (MeF) system for electronic tax return submission, the e-Services suite for authorized e-file providers, and Publication 4164 (the MeF Guide for Software Developers and Transmitters) which documents the XML schemas and transmission protocols required for integration.

Internal Revenue Service publishes 2 APIs on the APIs.io network. Tagged areas include Federal Government, Finance, IRS, Tax, and Tax Filing.

Internal Revenue Service’s developer surface includes support and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.5/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

2 APIs

Federal GovernmentFinanceIRSTaxTax Filing

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 19.5/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.8 / 13

Governance 0.0 / 12

Discoverability 5.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/internal-revenue-service: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Internal Revenue Service Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

Developer

Developer

Source (apis.yml)

aid: internal-revenue-service
name: Internal Revenue Service
description: The Internal Revenue Service (IRS) is the United States federal tax collection agency and a bureau of the Department
  of the Treasury. The IRS publishes developer resources for tax software providers and transmitters including the Modernized
  e-File (MeF) system for electronic tax return submission, the e-Services suite for authorized e-file providers, and Publication
  4164 (the MeF Guide for Software Developers and Transmitters) which documents the XML schemas and transmission protocols
  required for integration.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/internal-revenue-service.png
tags:
- Federal Government
- Finance
- IRS
- Tax
- Tax Filing
url: https://raw.githubusercontent.com/api-evangelist/internal-revenue-service/refs/heads/main/apis.yml
created: '2024-12-25'
modified: '2026-04-28'
specificationVersion: '0.19'
apis:
- aid: internal-revenue-service:modernized-e-file
  name: IRS Modernized e-File (MeF)
  description: The IRS Modernized e-File (MeF) system is the web-based electronic filing platform supporting individual, business,
    and tax-exempt return submission via XML-based schemas. Software developers and transmitters integrate with MeF to submit
    returns and receive acknowledgements.
  humanURL: https://www.irs.gov/e-file-providers/modernized-e-file-mef-internet-filing
  tags:
  - Federal Government
  - Tax Filing
  properties:
  - type: Documentation
    url: https://www.irs.gov/e-file-providers/modernized-e-file-mef-internet-filing
  - type: Schemas
    url: https://www.irs.gov/e-file-providers/modernized-e-file-mef-schemas-and-business-rules
  - type: Guide
    url: https://www.irs.gov/pub/irs-pdf/p4164.pdf
- aid: internal-revenue-service:e-services
  name: IRS e-Services
  description: IRS e-Services is a suite of web-based products for tax professionals, reporting agents, and authorized e-file
    providers offering Transcript Delivery, TIN Matching, e-file application management, and secure messaging for electronic
    interactions with the IRS.
  humanURL: https://www.irs.gov/tax-professionals/e-services
  tags:
  - Federal Government
  - Tax Professionals
  properties:
  - type: Documentation
    url: https://www.irs.gov/tax-professionals/e-services
common:
- type: DomainSecurity
  url: security/internal-revenue-service-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/IRS-Public
- type: LinkedIn
  url: https://www.linkedin.com/company/irs
- type: Website
  url: https://www.irs.gov/
- type: Developer
  url: https://www.irs.gov/e-file-providers/software-developers
- type: Support
  url: https://www.irs.gov/help
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Internal Revenue Service

Kin Score

APIs 2

IRS Modernized e-File (MeF)

IRS e-Services

Pricing Plans 1

Internal Revenue Service Plans Pricing

Rate Limits 1

Internal Revenue Service Rate Limits

FinOps 1

Internal Revenue Service Finops

Security Posture 1

Internal Revenue Service Domain Security

Resources