Tax guide
State capital gains tax: zero, flat, and high-tax states
Updated 2026-08-18 · Educational only — not tax advice
Federal capital gains tax is only part of the story. States fall into rough buckets: zero state income tax on capital gains, flat-rate taxation, graduated ordinary-income treatment, and a handful of special-rule jurisdictions.
Zero-tax examples include Texas and Florida. Flat-rate states such as Illinois apply a single percentage in our model. Graduated states like California can push combined federal-plus-state effective rates well above 30% for top earners. Washington, North Dakota, and Montana apply specialised capital gains rules that are not a simple flat percentage.
How to compare states
Open the 50-state hub, pick your state for a pre-selected calculator, and read the official source link on each page. Moving solely for tax reasons involves housing, employment, and domicile rules far beyond this overview.
Our engine encodes category models and special rules from published sources; rates change, so verify before filing. See methodology for how we update data.
