Does the District of Columbia tax Social Security benefits?

No. The District of Columbia fully excludes Social Security benefits from taxable income. No portion of your Social Security is subject to DC income tax, regardless of your total income, which makes DC relatively friendly for that income source.

How does DC tax pensions and 401(k) withdrawals?

The District of Columbia taxes pension income and IRA or 401(k) withdrawals as ordinary income under its graduated brackets of 4% to 10.75%. Unlike some states, DC does not provide a general exclusion for private pension income, so these distributions are fully taxable.

Is there any retirement income exclusion in DC?

DC offers a limited exclusion for certain DC and federal government annuities for residents age 62 and older, up to a capped amount. Outside of that and the full Social Security exclusion, most retirement income is taxed normally under the DC brackets.

Does DC tax military or government pensions differently?

DC allows a partial exclusion for military retirement pay and certain government annuities for older residents, subject to caps. The rules are specific, so retirees with government pensions should check the DC Form D-40 instructions for the current exclusion amount.

Is this calculator exact?

It models the major rules — full Social Security exclusion and ordinary taxation of pensions and retirement-account withdrawals. It does not apply every government-annuity exclusion or credit, so treat the result as a close estimate and verify with the DC Office of Tax and Revenue.

District of Columbia Retirement Income Tax Calculator

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The District of Columbia is moderately retiree-friendly: it fully excludes Social Security from taxable income but taxes pensions and 401(k)/IRA withdrawals as ordinary income under its 4% to 10.75% brackets. This calculator separates your income sources, applies the correct DC treatment to each, and shows your tax and effective rate.

How it works

DC taxes retirement income source by source:

Social Security is fully excluded — it never enters DC taxable income.
Pensions and retirement-account withdrawals (401(k), IRA) are taxed as ordinary income.
Apply the brackets. Subtract your standard deduction from the taxable portion, then step it through the DC graduated brackets.

The formula is dcTax = brackets(pension + retirementWithdrawals − stdDeduction), with Social Security omitted entirely.

Tips and example

A single retiree with $24,000 of Social Security, a $30,000 pension, and $12,000 of 401(k) withdrawals has $42,000 of DC-taxable income before deductions. After the $14,600 standard deduction, $27,400 is taxed — 4% on the first $10,000 plus 6% on the next $17,400 — about $1,444, an effective rate near 2.2% of total retirement income.

The full Social Security exclusion is the biggest factor keeping DC retirees’ tax low. Certain government and military annuities have additional limited exclusions for older residents. This is an estimate — confirm against the DC Form D-40 instructions and a tax professional.