Planning tool · Local & private

Survivor Tax Planner

The widow’s penalty, made visible before it arrives: what happens to the household tax picture when one spouse dies and the survivor files Single.

● Nothing leaves this machine. All computation runs inside this one file, in your browser — no server, no account, no network requests. Client data you type here stays here.

Setup

Spouse A

Spouse B

Joint / household

Rental (Schedule E)
§199A / QBI (business owners only)

Report footer

Both alive (MFJ) vs. survivor (Single)

Roth conversion headroom (while both are alive)

Self-check

This copy re-verifies its own math on three fixed households — covering Social Security taxability, per-person self-employment tax, QBI, NIIT, IRMAA, and the Georgia layer — against values computed independently by the Python oracle at build time (see TESTING.md). It proves this copy is uncorrupted; the full test suite behind each release is broader. User inputs never affect this check.

Disclaimer
Planning illustration only — not tax advice, not a return, and not a substitute for one. Federal figures: TY2026 per Rev. Proc. 2025-32 and OBBBA (P.L. 119-21); Medicare IRMAA: CMS 2026; Georgia: HB 463 (4.99%, retirement exclusion). Standard deduction only (no itemizing, no credits); QBI models one combined business per return; AMT, QSS status, and QBI loss carryovers are not modeled; capital losses are limited to the §1211(b) $3,000 cap. The projection is a steady-state year: actual IRMAA premiums lag the income year by two years (the MAGI lookback), and the survivor’s SS benefit is simplified (larger-of rule; no early-claiming reduction). Verify current figures with your preparer before acting. Built and shared through AI Lab for Accountants (ailabforaccountants.com).
Cost of survivorship · Planning illustration

Survivor Tax Planner

Both alive (MFJ) vs. survivor (Single)

Key assumptions

    Planning illustration only — not tax advice, not a return, and not a substitute for one. Based on tax year figures (federal: Rev. Proc. 2025-32 / OBBBA; Medicare: CMS; Georgia: HB 463). Standard deduction only; capital losses limited to $3,000; IRMAA is shown steady-state (actual premiums lag the income year by two years). Actual results will differ with facts, law changes, and inflation adjustments. Prepared for planning discussion.