States with no capital gains tax: the 8, plus the WA catch

§ I · The 8 Zero-Cap-Gains States

The 8 states with zero capital gains tax

§ III · The Origin-State Saving

How much can you save by moving before realising the gain?

Most high-tax states tax capital gains as ordinary income at the state level (no preferential capital gains rate). California: 13.3 percent top marginal. New York: 10.9 percent state plus 3.876 percent NYC = 14.78 percent combined. New Jersey: 10.75 percent. Massachusetts: 9 percent on gains above $1M (the millionaire surtax). Oregon: 9.9 percent. Hawaii: 11 percent (with 7.25 percent capital gains preferential rate). The combination of high federal rate plus high state rate can take total tax on a long-term capital gain above 35 percent for high earners in California or New York City.

Moving to one of the 8 zero-capital-gains-tax states before realising the gain saves the state portion entirely. The federal tax is unchanged. For a $1 million gain: California saving = $133,000; NYC saving = $147,800; NJ saving = $107,500; MA saving (above $1M) = $90,000. The saving compounds at scale. A $20 million liquidity event from a CA tech founder, realised post-Nevada-residency-change, saves $2.66 million in CA state tax. The same event from a NYC resident moving to Florida saves $2.96 million.

The mechanics matter. The gain must be realised after the residency change date (the date you became a non-resident of the source state). State tax authorities particularly the California Franchise Tax Board scrutinise moves followed quickly by large gains. Common audit triggers: residency change less than 12 months before a major sale, retention of source-state property and ties, continued source-state professional service relationships, family members remaining in the source state. Clean moves with substantive residency changes (sold home, moved family, severed professional ties, changed driver's licence and voter registration day one) defend successfully against audit. Audit risk is roughly proportional to gain size; the FTB does not commit audit resources to a $50K capital gain but will commit them to a $20M gain.

§ V · How to Time a Move Around a Liquidity Event

How to time a move around a planned sale

For a planned liquidity event (anticipated IPO, anticipated acquisition, anticipated tender offer, planned sale of family business), timing the move to a no-state-tax state correctly is the single most leveraged tax decision available to the household. The key principles: establish residency before the gain is realised; allow at least 6 to 12 months between residency change and sale; document the move thoroughly in case of audit; sever ties with the source state substantively, not just on paper.

Practical sequencing: 18 months before anticipated event, identify destination state and begin search for residence. 12 months before, sell or rent out the source-state primary residence and complete purchase of destination-state residence. 9 months before, change driver's licence, voter registration, vehicle registration, professional service relationships (PCP, dentist, attorney, accountant). 6 months before, establish substantive presence in destination state (more than 184 days per calendar year). 3 months before, file appropriate part-year residency tax forms in the source state for the year of the move. After the gain: file a non-resident return in the source state showing zero source-state income for the post-move period.

Common mistakes that defeat the strategy: moving 2 to 3 months before the sale ("residency tourism"); retaining the source-state primary residence as a "second home"; continuing to vote in the source state; continuing to use source-state professional services; spending more than 184 days in the source state in the move year. Auditors look at the totality. A clean residency change with a 12-month gap before the sale rarely faces audit. A 30-day residency change followed by a $20M gain virtually always faces audit, with a high success rate for the source state.