13 tools that work with IRS: 13 MCP servers, 0 Agent Skills and 0 Claude Code plugins. 10 of the remote servers answered our live check, 9 worked without an API key, and 8 come from an official or verified publisher. Ranked by GitHub stars plus official, live and free-to-try signals.
Most common uses: Accounting & invoicing (7), Government & public data (4), Market data, stocks & crypto (1), Research, papers & reference data (1).
| Tool | Stars | Last update | License | |
|---|---|---|---|---|
| 990.tax nonprofit lookup IRS records on US nonprofits: exempt status, revocations, Form 990 financials, due dates, stats. MCP serverVerified domain · 990.taxRemote● LiveFree to try | — | — | ||
| Advisor Deadlines Q4 IRS deadline check for advisors: which clients an RMD, QCD or SEP date hits. Stateless. MCP serverVerified domain · advisor-deadlines-mcp.agentbets.workers.devRemote● LiveFree to try | — | — | ||
| GrantCue Search public US grants and foundation profiles from IRS filings. Read-only, no sign-in. MCP serverVerified domain · grantcue.comRemote● LiveFree to try | — | — | ||
| IRS 990 Nonprofit Data Nonprofit lookup and IRS 990 filing data: revenue, assets, and compensation via ProPublica MCP serverVerified domain · olyport.comRemote● LiveFree to try | — | — | ||
| MLP Tax Computation Engine Deterministic MLP tax engine with IRS citations. 6 tools: basis, §751, estate, projections. MCP serverVerified domain · lucasandersen.aiRemote● LiveFree to try | — | — | ||
| XipFax Fax a form from your AI assistant. XipFax finds the right IRS fax number and shows the price first. MCP serverVerified domain · xipfax.comRemote● LiveFree to try | — | — | ||
| taxmeup.xyz Free educational tax deduction analysis. Check common deductions with IRS publication citations. Tax MCP serverVerified domain · taxmeup.xyzRemote● LiveAPI key needed | — | — | ||
| 990.tax Form 990-N filing Prepare a Form 990-N from IRS records, check it, review and pay on 990.tax, track IRS acceptance. MCP serverVerified domain · 990.taxRemoteSign-in needed | — | — | ||
| Arc & Ledger Tax Tools Enrolled Agent tax tools: IRS notices, FBAR, LLC vs S-Corp, quarterly estimates & more. MCP serverGitHub-verified authorRemote● LiveFree to try | — | — | ||
| io.github.Kindora-PBC/foundation-discovery Foundation discovery and grant intelligence for nonprofits. 174K+ US funders, IRS 990 data. MCP serverGitHub-verified authorRemote● LiveFree to try | — | — | ||
| ITC Prevailing Wage & Apprenticeship Guide IRS prevailing wage & apprenticeship (PWA) rules for the clean-energy ITC: checks, cures, rates. MCP serverGitHub-verified authorRemote● LiveFree to try | — | — | ||
| io.github.dma9527/irs-taxpayer 45 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios. MCP serverGitHub-verified authorLocal · npm | 14 | MIT | ||
| IRS SOI (income by ZIP) IRS income & tax stats by ZIP in your agent: AGI distribution, tax, credits, deductions. MCP serverGitHub-verified authorLocal · PyPI | 0 | MIT |