Most retirement pensions are taxed as ordinary income

Whether you pay tax on your pension depends on what kind of pension you have and where the money came from. If you contributed to your pension with pre-tax dollars — money taken from your paycheck before income tax was withheld — then the full amount you receive is taxable income. If you contributed with after-tax dollars, only the earnings portion is taxed, not your original contributions.

The IRS treats pension payments the same way it treats wages: they count as income for the year you receive them. You'll report them on your tax return, and they're subject to federal income tax at whatever rate bracket you fall into. Some states also tax pension income, though a handful of states exempt pensions entirely.

You don't have to wait until April to pay the tax. Your pension provider will withhold federal income tax automatically from each payment unless you tell them not to. This withholding is an estimate based on the W-4P form you fill out when you start receiving payments.

Key Takeaways

  • Pensions funded with pre-tax contributions are fully taxable; pensions funded with after-tax contributions are taxed only on the earnings portion.
  • Federal income tax is withheld automatically from pension payments based on the W-4P form you complete with your pension provider.
  • Some states tax pension income and others do not, so your state of residence affects your total tax bill.
  • If you receive a lump-sum pension payment instead of monthly checks, you may owe a large tax bill in a single year unless you roll it into an IRA.
  • Military pensions and some government employee pensions have different tax rules than private pensions.

The difference between pre-tax and after-tax contributions

Most traditional pensions are funded with pre-tax money. Your employer deducted the contribution from your paycheck before calculating your income tax, which lowered your taxable income that year. When you retire and start drawing the pension, you're receiving money that was never taxed, so the full payment is taxable income now.

If you made after-tax contributions to your pension — which is less common — you've already paid income tax on that money once. You won't pay tax on it again. Only the investment earnings that accumulated inside the pension are taxed when you withdraw them. Your pension provider should give you a statement showing how much of your pension is from contributions versus earnings so you can calculate the taxable portion.

Some pensions are a mix: part funded by pre-tax contributions and part by after-tax contributions. In that case, each payment is split proportionally. If 70% of your pension came from pre-tax money and 30% from after-tax money, then 70% of each payment is taxable and 30% is not.

How withholding works and what happens if you don't withhold enough

When your pension starts, your provider will ask you to complete a W-4P form. This form tells them how much federal income tax to withhold from each payment. You can choose to have no tax withheld, a flat dollar amount withheld, or a percentage of the payment withheld. Most people choose a percentage so the withholding scales with the payment amount.

The withholding is an estimate. If you underestimate and don't have enough tax withheld, you'll owe money when you file your tax return in April. If you overestimate, you'll get a refund. You can adjust your W-4P at any time by contacting your pension provider, so if you find you're underpaying or overpaying, you can correct it mid-year.

If you have other income besides your pension — Social Security, investment income, part-time work — the withholding on your pension alone may not cover your total tax bill. In that case, you may need to make estimated tax payments or adjust your withholding to account for the other income.

State income tax on pensions

Federal tax is only part of the picture. Your state may also tax pension income. Some states, including Pennsylvania, Illinois, and Mississippi, exempt all pension income from state income tax. Others tax pensions the same way they tax wages. A few states offer partial exemptions based on age or income level.

If you move to a different state after you retire, your tax situation may change. Some retirees move specifically to a state with no pension tax to reduce their overall tax burden. Your pension provider can withhold state income tax as well as federal tax, or you can handle state taxes separately when you file your state return.

Check your state's tax agency website or speak with a tax professional to understand your state's rules. The rules vary widely and change occasionally, so what applied last year may not apply this year.

Lump-sum pension payments and tax consequences

Some pensions offer the choice between monthly payments for life or a single lump-sum payment of the entire pension value. If you take the lump sum, the entire amount is taxable income in the year you receive it. This can push you into a higher tax bracket and create a large tax bill.

If you receive a lump-sum distribution, you have the option to roll it into a traditional IRA or another may have access to retirement plan within 60 days. If you do, the money stays tax-deferred and you only pay tax as you withdraw it later. This is called a rollover. If you don't roll it over, you'll owe tax on the full amount immediately.

Your pension provider should explain the rollover process and may offer to transfer the money directly to an IRA on your behalf, which is the safest route. If the money passes through your hands first, your provider is required to withhold 20% for federal income tax, even if you plan to roll it over. Direct rollovers avoid this withholding.

Military and government pensions

Military pensions are taxed as ordinary income at the federal level, just like private pensions. However, some states exempt military pensions from state income tax even if they tax other pensions. If you're a military retiree, check your state's rules.

Federal government employee pensions (FERS and CSRS) are also taxed as ordinary income. State and local government employee pensions vary by state and employer. Some are fully taxable, some are partially exempt, and some are fully exempt. The rules depend on when you were hired and what state you live in.

If you receive a pension from a government employer, your pension statement should indicate whether it's taxable and how much to report on your tax return. If you're unsure, contact your pension administrator or a tax professional.

How Social Security affects your pension taxes

If you receive both a pension and Social Security, the combination can affect how much of your Social Security is taxable. The IRS uses a formula based on your "combined income" — which includes your pension, half your Social Security benefits, and other income — to determine whether your Social Security is taxable.

This is separate from the tax on your pension itself. Your pension is taxable regardless. But the presence of pension income can make more of your Social Security taxable than it would be otherwise. This is one reason some retirees work with a tax professional to plan their income in retirement.

Frequently Asked Questions

Do I have to pay tax on my entire pension or just part of it?

If your pension was funded entirely with pre-tax contributions, the entire payment is taxable. If it was funded with after-tax contributions, only the earnings are taxable, not your original contributions. Your pension provider should tell you the breakdown.

What if I don't want any tax withheld from my pension?

You can choose zero withholding on your W-4P form. However, you'll owe the tax when you file your return, so you'll need to set aside money or make estimated tax payments. This approach works only if you have the discipline to save the money and understand you'll owe a lump sum in April.

Can I avoid taxes by rolling my pension into an IRA?

A rollover doesn't avoid taxes — it defers them. The money stays tax-deferred in the IRA, and you pay tax only when you withdraw it. This is useful if you want to avoid a large tax bill in a single year, but you'll eventually pay tax on the full amount.

Will my pension affect my Medicare premiums or other benefits?

Pension income counts toward your modified adjusted gross income, which can affect your Medicare premiums and other benefit calculations. Higher income may result in higher premiums. Review your Social Security statement and Medicare notices to understand how your pension affects your benefits.

Do I need to file a tax return if my only income is my pension?

It depends on the amount. If your pension is below the standard deduction for your age and filing status, you may not be required to file. However, filing is often worthwhile because you may be due a refund of withheld taxes. Check the IRS website or speak with a tax professional about your specific situation.