State calculators
Capital gains tax calculator by state
Updated 2026-08-18 · Educational only — not tax advice
8 zero-tax
$0 state CGT in this model
5 flat-rate
Single encoded state percentage
50 states
Plus 3 special-rule and 34 graduated
Federal plus state on one sale
Each state page estimates federal capital gains tax, NIIT when it applies, and that state’s modeled tax. High-intent examples:California,New York,Texas, andFlorida.
Special-rule models live onWashington,North Dakota, andMontana. For how layers stack, seemethodology. For the category overview, seestate capital gains tax.
Directory
All 50 states
Zero state CGT (8)
Zero state capital gains tax
Flat-rate states (5)
Flat-rate states
Special rules (3)
Special-rule states
Graduated / ordinary income (34)
