Yes, the federal government does tax pension income in most cases. Pension distributions are treated as ordinary income and taxed at the regular federal rates, which for 2026 run from 10% to 37%.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 How much of any given payment is actually taxable depends on whether the money going into the plan was already taxed and on the type of plan paying you.
What Part of a Pension Is Actually Taxable
The IRS looks at your “basis” in the plan, meaning the total you contributed with dollars that had already been taxed. That basis comes back to you tax-free over time. Everything else — employer contributions, investment earnings, and any pre-tax money you put in yourself — is taxed as ordinary income when it’s paid out.
Most traditional pensions are funded entirely with pre-tax dollars. If that’s your situation, your basis is zero and every dollar you receive is fully taxable. When a plan holds a mix of pre-tax and after-tax contributions, each monthly payment gets split into a taxable piece and a tax-free return of basis.
For most qualified pensions and annuities, the IRS requires the Simplified Method to work out the tax-free portion.2Internal Revenue Service. Topic No. 411, Pensions – The General Rule and the Simplified Method You divide your total after-tax contributions by a set number of expected monthly payments based on your age at the start of payments. That gives you a fixed dollar amount excluded from tax each month. Once you’ve recovered your entire basis, every later payment is fully taxable.
A different calculation called the General Rule applies to nonqualified plans, private annuity contracts, and certain retirees who were already 75 with guaranteed payments of fewer than five years when their annuity started.3Internal Revenue Service. Publication 939 (12/2025), General Rule for Pensions and Annuities Most retirees never touch it.
Your plan administrator reports what you received on Form 1099-R each year. Box 1 shows the gross distribution and Box 2a shows the taxable amount.4Internal Revenue Service. Instructions for Form 1099-R and Schedule A (Form 1099-R) If Box 2a says “Unknown,” the administrator didn’t do the math for you, and you’ll need to run the Simplified Method worksheet in the Form 1040 instructions yourself.
How Different Pensions Are Taxed
Private and Corporate Pensions
Distributions from corporate defined benefit pensions, 401(k) plans, and other qualified employer plans are taxed as ordinary income. If you made some after-tax contributions and are drawing monthly annuity payments, each payment is partially tax-free under the Simplified Method until your basis is recovered.2Internal Revenue Service. Topic No. 411, Pensions – The General Rule and the Simplified Method If the plan was funded entirely with pre-tax money, the full payment is taxable.
Taking the whole pension as a lump sum creates a big tax bill in a single year. The full value minus any basis is taxable as ordinary income, and one large distribution can easily push you into a higher bracket for that year. Rolling the lump sum into an IRA is a common way to avoid the immediate hit.
Federal Civil Service (CSRS and FERS)
Federal retirees under the Civil Service Retirement System or the Federal Employees’ Retirement System receive partially taxable annuities. Employee contributions to CSRS and FERS were made with after-tax dollars, so there’s a basis to recover using the Simplified Method.5Internal Revenue Service. Publication 721 (2024), Tax Guide to U.S. Civil Service Retirement Benefits The Office of Personnel Management usually calculates the taxable portion and reports it on Form CSA 1099-R.
Thrift Savings Plan
Traditional TSP withdrawals are fully taxable as ordinary income because contributions were tax-deferred. Roth TSP contributions come out tax-free, since income tax was already paid on that money going in. Earnings on Roth contributions are also tax-free, but only if the distribution is qualified: at least five years must have passed since your first Roth TSP contribution, and you must have reached age 59½, have a permanent disability, or have died.6Thrift Savings Plan. Changes to Tax Rules About TSP Payments Roth earnings taken before both conditions are met are taxed as ordinary income.
Military Retirement Pay
Standard military retired pay is fully taxable as ordinary income and reported on Form 1099-R. Two exceptions matter. VA disability compensation is entirely exempt from federal tax under Title 38 and isn’t reported as income at all.7Office of the Law Revision Counsel. 38 USC 5301 – Nonassignability and Exempt Status of Benefits And any portion of retired pay attributable to a combat-related injury is tax-exempt under the Internal Revenue Code, including injuries from armed conflict, extrahazardous service, conditions simulating war, or instrumentalities of war.8Office of the Law Revision Counsel. 26 U.S. Code 104 – Compensation for Injuries or Sickness
Many veterans eligible for both waive a portion of their taxable military retired pay to receive VA disability compensation instead, shifting income from taxable to tax-free.
Retired Public Safety Officers
Retired police officers, firefighters, paramedics, and similar public safety employees can exclude up to $3,000 per year of pension income used to pay health insurance or long-term care premiums, as long as the premiums come directly out of the pension distribution.9Internal Revenue Service. Publication 575 – Pension and Annuity Income (2025 Draft) Paying out of pocket and claiming the exclusion later doesn’t work.
Pension Income Can Make Social Security Taxable Too
Federal tax on your pension isn’t the whole cost. Pension income also feeds into the formula that determines whether your Social Security benefits get taxed. The IRS adds half of your Social Security benefit to your adjusted gross income (which includes pension distributions) and any tax-exempt interest to get your “combined income.” If that total is over $25,000 for a single filer or $32,000 for a married couple filing jointly, up to 50% of Social Security becomes taxable. Above $34,000 or $44,000, up to 85% is taxable.10Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
These thresholds haven’t been adjusted for inflation since the 1980s and 1990s, so more retirees cross them each year. Even a modest pension can be enough to trigger tax on Social Security.
Required Minimum Distributions
Deferring tax on a pension forever isn’t an option. Starting the year you turn 73, the IRS requires minimum annual withdrawals from most tax-deferred accounts, including traditional IRAs, 401(k)s, and similar plans.11Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs Under the SECURE 2.0 Act, that starting age rises to 75 beginning in 2033. If you’re already drawing monthly annuity payments from a defined benefit pension, those payments generally satisfy the RMD for that plan.
Your first RMD is technically due by April 1 of the year after you turn 73, but waiting creates a double-distribution year, because the second RMD is still due by December 31 of that same year. Missing an RMD is expensive: a 25% excise tax on the amount you should have withdrawn, dropping to 10% if you correct the shortfall within two years.12Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
Early Withdrawals Before Age 59½
Pulling money out of a qualified pension plan before age 59½ generally adds a 10% additional tax on top of the ordinary income tax you’d already owe. The penalty is reported on Form 5329.13Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions Several exceptions remove the 10%, though the distribution is still taxed as ordinary income:
- Separation from service at 55 or older (age 50 for public safety employees in government plans), from that employer’s plan.
- Total and permanent disability.
- Unreimbursed medical expenses above 7.5% of your adjusted gross income.
- One penalty-free emergency personal expense withdrawal of up to $1,000 per year under SECURE 2.0, provided it doesn’t drop your vested balance below $1,000.
Withholding on Pension Payments
Pension payments are subject to federal income tax withholding unless you opt out. For regular monthly pension or annuity payments, you file Form W-4P with your plan administrator to set the withholding rate.14Internal Revenue Service. About Form W-4P, Withholding Certificate for Periodic Pension or Annuity Payments For one-time distributions or eligible rollover distributions, Form W-4R is used instead.
Getting withholding right matters more in retirement than during your working years. Between Social Security, pension payments, and investment income, the default withholding on any single source often falls short of what you actually owe. The IRS Tax Withholding Estimator at irs.gov lets you check whether your combined withholding is on track and adjust before you get a surprise bill at filing time.
State Taxes Are a Separate Question
Federal tax is only one layer. State income tax treatment of pensions varies widely: nine states have no income tax at all, some (including Illinois and Mississippi) fully exempt qualified pension distributions, others offer partial exclusions based on age or a dollar cap, and some tax pension income like any other income. Where you live in retirement can meaningfully change your after-tax income even when the federal calculation stays the same.