ACA premium tax credit calculator MCP server

Gives an AI assistant the 2026 Obamacare subsidy rules that are newer than its training data. The enhanced premium tax credits ended after 2025, so for 2026 coverage the 400% federal poverty line cliff is back, the IRS table runs from 2.10% to 9.96% of income (Rev. Proc. 2025-25), and excess advance credit is repaid in full with no cap (P.L. 119-21 sec. 71305). Every number is copied from IRS, Federal Register and congress.gov sources.

Connect

Hosted endpoint (Streamable HTTP, no sign-in, no token). Paste it into Claude.ai custom connectors or ChatGPT developer mode.

https://aca-premium-tax-credit-calculator-mcp.lipmichal.workers.dev/mcp

Claude Code

claude mcp add --transport http aca-premium-tax-credit https://aca-premium-tax-credit-calculator-mcp.lipmichal.workers.dev/mcp

Local (stdio)

npx -y github:theluckystrike/aca-premium-tax-credit-calculator-mcp

Tools

get_federal_poverty_levelFederal poverty line for ACA coverage years 2025-2027 (48 states and DC, Alaska, Hawaii) with the 100% to 400% thresholds.
calculate_premium_tax_creditPremium tax credit for 2025 (enhanced rules) or 2026 (Rev. Proc. 2025-25 table, 400% FPL limit), the Form 8962 way.
check_subsidy_cliffDollar effect of the 400% FPL cliff for 2026 coverage, and the income cut needed to get back under it.
get_aptc_repayment_capExcess APTC repayment caps for 2025, and no cap from 2026 (P.L. 119-21 sec. 71305).

Lower your MAGI with an HSA: taxbreakcalc.com HSA calculator. Source: github.com/theluckystrike/aca-premium-tax-credit-calculator-mcp.

General information, not tax advice. Part of the Zovo MCP collection: mcp.zovo.one.