The Washington retirement income tax calculator shows the simplest possible state tax answer for retirees: zero. Washington has no state income tax, so your Social Security, pension, annuity, and 401(k) or IRA withdrawals are all free of Washington state tax. This tool confirms that and estimates the federal taxable portion of your Social Security so you can plan your full bill.
How it works
There are two layers to retirement taxation, and Washington only touches one of them — by not taxing ordinary income at all.
State layer (Washington): No income tax. Social Security, pensions, and retirement-account withdrawals are all taxed at $0 by the state. (Washington does have a 7% tax on long-term capital gains above an annual deduction, but that applies to investment-asset sales, not to pension or IRA distributions.)
Federal layer (Social Security): The IRS may tax part of your Social Security based on provisional income:
provisional income = AGI (excluding SS) + tax-exempt interest + 0.5 x Social Security
The taxable share of benefits then depends on your filing status:
- Single: up to 50% taxable above $25,000 provisional, up to 85% above $34,000.
- Married filing jointly: up to 50% above $32,000, up to 85% above $44,000.
Pensions and traditional 401(k)/IRA withdrawals are fully taxable federally as ordinary income, but again, Washington adds nothing.
Worked example
A single retiree with $24,000 of Social Security, a $20,000 pension, and $10,000 of IRA withdrawals:
- Provisional income: $30,000 (other income) + $12,000 (half of SS) = $42,000
- Above the $34,000 threshold, so up to 85% of benefits may be taxable federally.
- Washington state tax: $0 on every dollar.
Tips and notes
- No state filing. Washington has no state income tax return for individuals.
- Watch the estate tax. Washington levies an estate tax on estates above roughly $2.193 million — relevant for planning, but not for ordinary annual income.
- Plan federally. Your federal bracket, the SS taxability formula, and required minimum distributions still apply — Washington simply does not add a state income layer on top.