Sell now or sell later?

You need to sell some stock to live on. Selling more than that is a timing choice — do it in a year you're working, or wait for one you're not. This prices that choice. Income tax and FICA on the wages are deliberately excluded; this is only what happens to your capital gains.

$0W-2 wages
$300,000gains sold to live on
$0extra gains sold on top

What the wages cost your gains

Extra capital-gains tax caused by working
$0
Move the wages slider.

Summary

Which taxes move

Capital-gains taxWith workWithout workChange

Washington's capital-gains tax keys off the realized gain alone, so wages never move it. All of the damage is federal.

Where the gains sit

0% federal 15% 20%

Washington's 2026 exemption isn't published yet. DOR indexes it each October under RCW 82.87.150, but has only posted 2024 ($270,000) and 2025 ($278,000). This tool uses the 2025 figure with 2026 federal numbers, so the WA side is likely a few thousand dollars conservative until DOR publishes.
Assumptions & sources

Filing status drives the deduction and the federal thresholds. Every figure below links to the authority that states it.

Switching reloads all federal presets, overwriting edits.

WA's 9.9% surcharge starts $1,000,000 above the deduction — that $1M is fixed in statute and not indexed, so it's derived here rather than entered ().

Sources

FigureValueAuthorityYear
Standard deduction MFJ$32,200Rev. Proc. 2025-32 §3.142026
Standard deduction Single$16,100Rev. Proc. 2025-32 §3.142026
Fed 0% LTCG ceiling MFJ$98,900Rev. Proc. 2025-32 §3.032026
Fed 15%→20% MFJ$613,700Rev. Proc. 2025-32 §3.032026
Fed 0% LTCG ceiling Single$49,450Rev. Proc. 2025-32 §3.032026
Fed 15%→20% Single$545,500Rev. Proc. 2025-32 §3.032026
NIIT 3.8%, $250K MFJ / $200K SingleunindexedIRS — NIITall
WA standard deduction$278,000WA DOR2025
WA deduction is per individual, not doubled for MFJ$250K baseRCW 82.87.060all
WA 7% + 2.9% surcharge over $1Mnot indexedRCW 82.87.0402025→
WA indexing mechanismOct CPIRCW 82.87.150all
LTCG stacks above ordinary incomeIRC §1(h)(1)all

Deliberately excluded

  • Income tax and FICA on the wages — this models the gains only.
  • Whether WA capital-gains tax reduces the federal amount realized under §164(a). The position is unsettled and circular; excluding it makes this model slightly conservative (~$290 at a $300K draw).
  • Itemizing instead of the standard deduction, 401(k)/HSA deferrals, AMT, ACA subsidies, IRMAA, state income tax (none in WA until the 2028 millionaires' tax at $1M).
  • Market risk of holding, which is the actual reason not to defer a sale forever.