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Washington, Massachusetts, Colorado +4 Capital Gains Tax Calculator

Combines federal long-term rates with Washington’s 7.00% state treatment.

Washington, Massachusetts, Colorado, Louisiana, Iowa, Idaho, Delaware share this page. Their rules produce the same answer to within a rounding difference, so publishing separate near-identical pages would add URLs without adding information. Every figure below applies to all 7 states.

Washington capital gains estimator

Combines federal long-term rates with Washington’s 7.00% state treatment.

Total tax on the gain —
Federal —
Washington state —
Net investment income tax —
You keep —

Figures computed from Tax Foundation (2024-2026 rate tables) and Internal Revenue Service (current tax year). Page last reviewed 2026-08-27. Estimates only — verify with the relevant agency before acting.

Washington at a glance

FigureWashingtonSource
State capital gains rate7.00%[1]
State top marginal rateNo income tax[1]
Federal long-term rates0% / 15% / 20%[2]
Net investment income tax3.8% above $200,000[2]

[1] [2] Sources

State capital gains rate — all 50 states

Washington highlighted. Same data as the table below, shown as a distribution so the comparison is visible at a glance.

State capital gains rate — all 50 states. Washington is 7.00%, ranked 11 of 50. The national median is 4.55%, the highest is 13.30% (California), and the lowest is 0.00% (Wyoming). CA 13.30% NY 10.90% NJ 10.75% OR 9.90% MN 9.85% MA 9.00% VT 8.75% WI 7.65% HI 7.25% ME 7.15% WA 7.00% CT 6.99% DE 6.60% MD 6.50% RI 5.99% NM 5.90% ID 5.80% VA 5.75% MT 5.65% KS 5.58% SC 5.21% AL 5.00% GA 4.99% IL 4.95% WV 4.58% NE 4.55% OK 4.50% UT 4.50% CO 4.40% MI 4.25% MS 4.00% NC 3.99% AR 3.90% IA 3.80% KY 3.50% OH 3.50% PA 3.07% LA 3.00% IN 2.95% AZ 2.50% ND 2.50% AK 0.00% FL 0.00% MO 0.00% NV 0.00% NH 0.00% SD 0.00% TN 0.00% TX 0.00% WY 0.00%

Highlighted: Washington, ranked 11 of 50. Median 4.55%.

Washington tax by gain size and other income

Total tax (federal + Washington + NIIT) on a long-term gain.

Capital gain$40,000 income$60,000 income$80,000 income$100,000 income$150,000 income$200,000 income$300,000 income$500,000 income
$10,000$783$2,200$2,200$2,200$2,200$2,580$2,580$2,580
$20,000$2,983$4,400$4,400$4,400$4,400$5,160$5,160$5,160
$30,000$5,183$6,600$6,600$6,600$6,600$7,740$7,740$7,740
$40,000$7,383$8,800$8,800$8,800$8,800$10,320$10,320$10,320
$50,000$9,583$11,000$11,000$11,000$11,000$12,900$12,900$13,125
$65,000$12,883$14,300$14,300$14,300$14,870$16,770$16,770$17,745
$80,000$16,183$17,600$17,600$17,600$18,740$20,640$20,640$22,365
$100,000$20,583$22,000$22,000$22,000$23,900$25,800$25,800$28,525
$125,000$26,083$27,500$27,690$28,450$30,350$32,250$32,250$36,225
$150,000$31,583$33,380$34,140$34,900$36,800$38,700$38,700$43,925
$200,000$44,103$46,280$47,040$47,800$49,700$51,600$51,600$59,325
$250,000$57,003$59,180$59,940$60,700$62,600$64,500$64,725$74,725
$350,000$82,803$84,980$85,740$86,500$88,400$90,525$95,525$105,525
$500,000$121,503$124,405$126,165$127,925$132,325$136,725$141,725$151,725
$650,000$167,428$170,605$172,365$174,125$178,525$182,925$187,925$197,925
$800,000$213,628$216,805$218,565$220,325$224,725$229,125$234,125$244,125
$1,000,000$275,228$278,405$280,165$281,925$286,325$290,725$295,725$305,725
$1,500,000$429,228$432,405$434,165$435,925$440,325$444,725$449,725$459,725

Worked figures for Washington

Washington values:

GainFederalStateNiitTotalEffective
$25,000$3,750$1,750$0$5,50022.00%
$50,000$7,500$3,500$0$11,00022.00%
$75,000$11,250$5,250$0$16,50022.00%
$100,000$15,000$7,000$0$22,00022.00%
$150,000$22,500$10,500$1,900$34,90023.27%
$200,000$30,000$14,000$3,800$47,80023.90%
$300,000$45,000$21,000$7,600$73,60024.53%
$500,000$77,725$35,000$15,200$127,92525.59%
$750,000$127,725$52,500$24,700$204,92527.32%
$1,000,000$177,725$70,000$34,200$281,92528.19%

How Washington compares nationally

On state capital gains rate, Washington ranks #11 of 50 at 7.00% — 54% above the median of 4.55%. The national range runs from 0.00% (Wyoming) to 13.30% (California).

RankStateState capital gains rate
#9Hawaii7.25%
#10Maine7.15%
#11Washington7.00%
#12Connecticut6.99%
#13Delaware6.60%

Flat state rate on gainss, ranked

Same rule structure as Washington:

StateState capital gains ratevs Washington
Washington7.00%—
Illinois4.95%-29.3%
North Carolina3.99%-43.0%
Ohio3.50%-50.0%
Pennsylvania3.07%-56.1%

Washington questions, answered with Washington numbers

Does Washington tax capital gains?▾
Yes. Washington applies 7.00% to capital gains. On a $100,000 long-term gain that is $7,000 in state tax, on top of $15,000 federal.
What would I owe on a $500,000 gain in Washington?▾
About $127,925 total — $77,725 federal, $35,000 to Washington, and $15,200 net investment income tax. You would keep roughly $372,075, an effective rate of 25.59%.
How does Washington compare with a no-tax state?▾
Realising a $500,000 gain in Washington costs $35,000 more than realising it in a state with no capital gains tax, such as Florida or Texas.

Other flat state rate on gainss

Ohio Illinois North Carolina Pennsylvania

Last reviewed 2026-08-27. Washington figures only — verify with the relevant Washington agency before acting. How this is calculated.