Capital Gains Tax Calculator · Washington

Washington Capital Gains Tax Calculator 2026

Washington has no income tax, but long-term gains can owe the state capital gains excise tax. See both that and the federal 0%/15%/20% rates, plus the 3.8% NIIT.

Data verified November 10, 2026 against official sources (see below).

Purchase Price

Sale Price

Other Taxable Income (after deductions)

Holding Period

Filing Status

Federal tax on gain

$4,500

1500.0% of the gain

Washington tax on gain

WA capital gains excise tax

Net proceeds

$45,500

Sale price minus total tax on the gain

How Washington taxes this gain

Washington has no income tax, but long-term capital gains allocated to Washington face a separate excise tax: 7% up to $1,000,000 of taxable gains and 9.9% above, after a standard deduction ($278,000 for 2025; the 2026 amount is adjusted for inflation and not yet published). Real estate and retirement accounts are exempt. Short-term gains (held one year or less) are not subject to this tax.

Washington capital gains excise tax tiers (since tax year 2025)
Taxable Washington long-term gains	Rate
Up to $278,000 (standard deduction)	0%
$278,000 to $1,278,000	7%
Above $1,278,000	9.9%

Federal capital gains rates 2026

2026 long-term capital gains brackets by filing status (taxable income)
Filing status	0% rate up to	15% rate up to	20% above	3.8% NIIT above (MAGI)
Single	$49,450	$545,500	$545,500	$200,000
Married filing jointly	$98,900	$613,700	$613,700	$250,000
Married filing separately	$49,450	$306,850	$306,850	$125,000
Head of household	$66,200	$579,600	$579,600	$200,000

Short-term gains (held one year or less) are taxed as ordinary income at the 2026 federal brackets — up to 37% — with no state tax.

Compare other states

Sources and how we calculate

Published by Financial Calculator. Editorial policy. Publisher attribution, not a claim of professional review.

Washington figures come from the state's published 2026 tax data (rolling verification recorded in our data files). The WA standard deduction shown is the 2025 amount of $278,000; the 2026 amount was not yet published when this page was checked.

Figures last checked on November 10, 2026. Read our calculation methodology for data sources and update schedule.

How We Calculate & Keep This Accurate

Short-term gains are taxed as the top slice of ordinary income: tax(income + gain) − tax(income) at federal ordinary rates. Long-term gains use the 0%/15%/20% preferential brackets stacked on ordinary taxable income, plus 3.8% NIIT when MAGI crosses the threshold. Washington's excise tax is computed separately with its own deduction and tiers.

Published by Financial Calculator. Editorial policy. No named professional review is implied.

Primary Sources

Data & Freshness

Figures reflect 2026 tax-year data.

Last updated November 10, 2026 · Maintained by the Financial Calculator editorial team.

Read our calculation methodology.

Washington capital gains FAQs

Common questions about capital gains tax in Washington for 2026.

Does Washington tax capital gains?

Washington has no income tax, but it charges a separate capital gains excise tax on long-term gains allocated to Washington: 7% up to $1,000,000 of taxable gains and 9.9% above, after a standard deduction ($278,000 for 2025, adjusted annually). Real estate and retirement account gains are exempt.

What is the long-term capital gains rate for 2026?

Long-term gains (assets held over a year) are taxed federally at 0%, 15% or 20% depending on taxable income: for a single filer the 0% rate applies up to $49,450 and the 15% rate up to $545,500. A 3.8% net investment income tax can apply above $200,000 MAGI (single).

Is it worth holding an asset longer than a year?

Usually yes. Short-term gains are taxed at your ordinary federal rates (up to 37%), while long-term gains use the lower 0%/15%/20% brackets. On the example above, holding long-term saves $2,100 in federal tax on this gain alone.