Step 2 of 4 · ProjectsTax datasets
State Estate Tax Dataset
US state estate and inheritance tax exemptions and rates, as an open dataset.
What it does
A dataset of US state estate and inheritance taxes for 2026, all states and DC: exemptions, rate schedules, heir classes, repeal dates and citations, as JSON and CSV. Kept by an estate planning attorney from each state's revenue department or statute and re-checked yearly. The README says it is reference data, not advice, and leaves out deductions, gifts, apportionment and elections; CC BY 4.0.
Where it fits on the map
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Maintain this project?
Link to this page from your README, so readers find the facts, the notes and where it fits. The badge is a small SVG served from this site.
[](https://tax-oss.com/projects/state-estate-tax/)