Key Takeaways
- Federal retirement income is generally taxable, but specific rules apply to FERS, CSRS, and TSP benefits.
- State taxes, survivor benefits, and Social Security each have their own tax treatment for federal retirees.
Most federal retirees will pay some income tax on their pension or TSP withdrawals, but the amount depends on the benefit type, your personal contribution history, and your state of residence. Understanding how FERS, CSRS, and TSP funds are taxed can help you prepare for tax season with confidence.
What Is Federal Retirement Income?
Defining FERS, CSRS, and TSP
Federal retirement income generally comes from three main sources. The Federal Employees Retirement System (FERS) and the Civil Service Retirement System (CSRS) are federal pension programs for employees. The Thrift Savings Plan (TSP) is a retirement savings and investment plan similar to a private-sector 401(k). If you are a covered federal employee, your retirement income may include payments from one or more of these systems.
How Retirement Benefits Are Structured
Each system operates a bit differently. Under FERS, you receive a monthly annuity (pension), Social Security benefits, and the ability to contribute to the TSP. CSRS provides a stand-alone pension, with no Social Security participation for most employees. The TSP is a defined contribution plan, which allows you to save money during your career and withdraw it in retirement. How each of these sources is taxed can vary based on contributions and withdrawal methods.
How Are FERS Pensions Taxed?
Federal Taxation Rules for FERS
Payments from the FERS pension are subject to federal income tax. Most of your annuity will be taxable because the government paid a significant portion, and your contributions were made after-tax.
Exclusion of Employee Contributions
A portion of each FERS payment is not taxed, reflecting contributions you made with after-tax dollars over your career. This non-taxable amount is calculated using the IRS Simplified Method and is spread over your expected lifetime payments. Once you have recovered your total contributions, all subsequent payments become fully taxable.
Reporting FERS Annuities on Taxes
Each year, you will receive a Form 1099-R from the Office of Personnel Management (OPM) showing the taxable and non-taxable portions of your FERS annuity. You report this information on your federal tax return. You may elect to have federal income taxes withheld from your payments.
How Are CSRS Benefits Taxed?
CSRS Taxation Requirements
CSRS annuities follow similar federal tax guidelines to FERS, with most of the payment being taxable income.
Employee Contributions and Tax Basis
If you contributed after-tax earnings to CSRS while employed, you can exclude parts of your payments from taxable income. This amount is recovered over your calculated life expectancy and is determined using the IRS Simplified Method, just as with FERS.
Tax Forms and Withholding Options
Retirees receiving CSRS annuities receive a Form 1099-R from OPM each year. This form details the taxable amount and any federal tax withheld. You can choose your own withholding rate, or pay estimated taxes quarterly if you prefer.
Is TSP Retirement Income Taxable?
Traditional vs. Roth TSP Tax Treatment
Traditional TSP withdrawals are fully subject to federal income tax, except for any contributions you made with tax-free combat pay. Earnings, as well as agency contributions, are also taxable upon withdrawal. Roth TSP accounts, by contrast, allow for qualified withdrawals to be tax-free. To qualify, the Roth TSP must have been open at least five years, and you must be age 59½ or older.
Withdrawals and Required Minimum Distributions
For both Traditional and Roth TSP accounts, required minimum distributions (RMDs) typically begin at age 73 (based on current law in 2026). RMDs for the Traditional TSP are taxable, while Roth TSP RMDs are not taxed if they’re qualified.
Withholding Elections for TSP Payments
You may elect to have federal taxes withheld from TSP withdrawals. TSP will send you a Form 1099-R each year detailing your withdrawals and amounts withheld.
Are Federal Survivor Benefits Taxed?
Survivor Annuities and Tax Status
If a federal retiree passes away, survivor annuities paid to family members are generally subject to federal income tax, just like the original annuity. A small, non-taxable portion may apply if the retiree made after-tax contributions.
Reporting Requirements for Survivors
Survivors will receive a Form 1099-R for annuity payments. This must be included with annual tax filings, along with any other income. Survivors can request tax withholding or make estimated payments if preferred.
Do Federal Retirees Pay Social Security Tax?
Social Security Taxation in Retirement
If you receive Social Security in retirement, it may be taxed depending on your “combined income”—which includes half of your Social Security, your pension, and any other income. For federal retirees, this often means a portion of your Social Security will be taxable at the federal level.
How Federal Pensions Affect Social Security Benefits
A FERS pension does not reduce your Social Security benefit, and the two are taxed separately. Most CSRS retirees who did not pay Social Security taxes during their careers may be subject to the Windfall Elimination Provision (WEP), which can reduce Social Security payments but does not change taxation rules.
How Do State Taxes Apply to Retirees?
Variation by State Tax Laws
State tax treatment varies widely. Some states fully tax federal retirement income, some exclude all or part of pensions and TSP withdrawals, and a few have no income tax at all. Your state’s department of revenue can provide details on applicable rules.
What to Know About Moving States
If you relocate in retirement, your federal pension and TSP distributions may be taxed differently. Some states offer specific exclusions or credits for federal retirees, while others do not. Investigate state rules before moving to understand possible changes in your overall tax liability.
What Are the Tax Reporting Requirements?
IRS Forms for Federal Annuities
Form 1099-R is used for reporting retirement income from FERS, CSRS, TSP, and survivor benefits. Each source of income will issue a separate 1099-R, which you must report on your IRS Form 1040 each year.
Withholding and Estimated Payments
You may choose to have federal income taxes withheld from your pension, TSP withdrawals, and survivor annuities. If withholding doesn’t cover your total tax bill, you may need to make estimated quarterly payments to avoid penalties.
How Do Medicare and Other Taxes Factor In?
Medicare Surtax Considerations
High-income retirees may be subject to a Medicare surtax, especially on investment income. Pensions and TSP distributions can push your income above key thresholds, affecting whether the surtax applies.
Other Federal Tax Requirements
Other requirements, such as the Net Investment Income Tax or additional taxes on early withdrawals, may apply based on your circumstances. Keeping track of the types and timing of distributions helps avoid unintended tax consequences.
What Should Federal Retirees Consider?
Withholding Options and Changes
You are free to adjust your tax withholding elections at any time for OPM and TSP payments. It is important to keep your withholding up to date, especially if your income or tax situation changes.
Managing Distributions and Deadlines
Tracking withdrawals and required minimum distributions, especially from the TSP, is important to meet IRS deadlines and avoid penalties. Review your income sources regularly so your reported income matches the 1099-R forms you receive each year.
