MCP server for US individual taxpayers — 39 tools for federal/state tax calculations, credits, deductions, retirement strategies, and tax planning. All calculations run locally. TY2024 + TY2025 (OBBB Act).

TurboTax Deluxe 2026 — guided tax preparation with deduction finder, interview flow and e-file support.

These tools are primarily for those in or very near retirement and are looking to optimize their spending in retirement. High net worth (IRA Millionaire) folks are most likely to be interested.

Experimental software to surface potential overpayment, underpayment and other filing issues.

Retirement relocation / state-tax arbitrage skill — thin orchestration over the public planfi MCP. How much a move (CA→TX/FL/NV) saves in state income tax, property tax, estate tax, and cost of living.

Claude Code skills for state-level business tax compliance. WA B&O, OH CAT, TX Franchise, and more.

2026 US state income tax rules for all 50 states + DC (flat/graduated brackets, standard deductions, retirement treatment) as JSON + CSV

Free 2026 Tax Calculator — Calculate paycheck, federal & state taxes, mortgage, 401(k), capital gains, and more. All 50 US states covered. https://thetaxcalc.com

Bloomberg Tax Research provides tax professionals with comprehensive access to primary sources, expert practitioner analysis, portfolios, and tax news for conducting in-depth tax research. The platform covers federal income tax, state and local tax (SALT), international tax, estate planning, benefits, payroll, and transfer pricing research.