Money GodDon't take our word for the math.
Money God checks its tax engine against returns families have actually filed, publishes how close it lands, and watches for law changes so the numbers stay right.
Recomputed returns vs. what was filed.
How the numbers stay honest.
Check our math
On Taxes → Past returns, any family can recompute a filed year from that year's figures and see the difference line by line.
Anonymous by design
The record keeps only the tax year, the state and the percentage difference — no names, no dollar amounts, no household.
A weekly law watch
Every week Money God reads new IRS, Treasury, Social Security and benefits rules from the Federal Register and flags the ones that touch what it models.
Yearly figures on a schedule
Contribution limits, the Social Security wage base and bend points are checked against each year's announcements before January.
State law re-researched
The 51 jurisdictions' estate rules carry their research date and sources, and are re-checked every year.
Exact law, not estimates
Federal and state tax are computed from the actual rules — brackets, credits and phase-outs — for each household's real situation.