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.
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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
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.