The amount of pension you owe tax on depends on how you funded it and which country's rules apply
Not all of your pension payment is taxable. The portion you owe tax on depends on whether you or your employer paid for it with pre-tax or after-tax money. In the United States, pensions funded with pre-tax contributions (money taken from your paycheck before income tax) are fully taxable when you receive them. Pensions funded with after-tax contributions are only partially taxable — you pay tax only on the earnings, not on the money you already paid tax on.
The rules differ significantly by country. The United Kingdom, Canada, and Australia each have different thresholds and tax treatment. This guide focuses on how the U.S. system works, since tax law is jurisdiction-specific and you should verify the rules where you live and receive your pension.
Key Takeaways
- Pensions funded entirely with pre-tax contributions are fully taxable as ordinary income in the year you receive them.
- Pensions funded with after-tax contributions are taxed only on the earnings portion, not on the principal you already paid tax on.
- Your pension payer (usually your former employer or pension administrator) should send you a Form 1099-R each year showing the taxable and non-taxable portions.
- You report pension income on your federal tax return, and most states also tax pension income, though a few states exempt military or public employee pensions.
- If you withdraw your pension before age 59½, you may owe an additional 10 percent early withdrawal penalty on top of regular income tax.
Pre-tax versus after-tax pension contributions
A pre-tax contribution is money your employer deducted from your paycheck and put into your pension plan before calculating your income tax. Because you did not pay income tax on that money when you earned it, you owe tax on the full amount when you receive it as a pension. This is the most common type of pension funding.
An after-tax contribution is money you paid tax on when you earned it, then your employer or you put into the pension plan. When you receive that money back as a pension, you do not owe tax on it again — only on the investment earnings it generated. For example, if you contributed $50,000 after-tax and it grew to $75,000, you owe tax only on the $25,000 gain, not the original $50,000.
Some pensions are a mix of both. Your pension payer should tell you the breakdown, and the IRS Form 1099-R they send you will show which portion is taxable.
How the IRS determines your taxable amount
The IRS uses a formula called the Simplified Method or the General Rule to calculate how much of your pension is taxable each year. Most retirees use the Simplified Method, which divides your after-tax contributions by the number of months you are expected to receive payments (based on IRS life expectancy tables). That quotient is subtracted from each payment to find the taxable portion.
Your pension payer calculates this for you and reports it on Form 1099-R. Box 1 shows the total pension payment; Box 2a shows the taxable amount. You do not have to do the math yourself — the form tells you what to report on your tax return. However, if you believe the calculation is wrong (for example, if your pension payer did not account for after-tax contributions you made), you can recalculate it yourself using IRS Publication 575.
If you have multiple pensions from different employers, each one is taxed separately using the same method. You cannot combine them to reduce your tax burden.
State income tax on pensions
Most U.S. states tax pension income the same way the federal government does — as ordinary income. However, a small number of states exempt certain pensions from state income tax. Military pensions are exempt from state tax in all 50 states. Public employee pensions (from state or local government jobs) are exempt in about 15 states, including Illinois, Mississippi, and Pennsylvania. Private pensions are taxed in every state that has an income tax.
If you moved to a state after you retired, the state where you receive your pension (your state of residence) taxes it, not the state where you worked. For example, if you worked in New York, retired to Florida, and receive your pension in Florida, Florida taxes it — and Florida has no income tax, so you owe nothing to the state.
Check your state's tax authority website or Form 1099-R instructions to confirm whether your specific pension is taxed in your state.
Early withdrawal penalties and exceptions
If you withdraw money from a pension plan before age 59½, you normally owe a 10 percent early withdrawal penalty on top of regular income tax. This penalty applies to the taxable portion of the withdrawal. For example, if you withdraw $10,000 and $8,000 is taxable, you owe 10 percent tax on the $8,000, plus your regular income tax rate on the same $8,000.
Several exceptions exist. You do not owe the penalty if you withdraw money because of a permanent disability, if you receive the money as part of a court-ordered divorce settlement (a may have access to Domestic Relations Order), or if you take substantially equal periodic payments over your life expectancy. Some pension plans also allow penalty-free withdrawals for medical expenses or financial hardship, though the rules vary by plan.
If you receive a pension as a lump sum before age 59½, ask your pension administrator whether any exceptions apply to you before you take the money. The penalty is steep and applies even if you do not owe much income tax overall.
Reporting pension income on your tax return
You report pension income on Form 1040 (the main U.S. individual income tax form) on the line for pensions and annuities. Your pension payer sends you Form 1099-R by January 31 each year. Box 1 shows the gross amount; Box 2a shows the taxable amount (unless Box 2b is checked, which means you need to calculate it yourself using the Simplified Method).
Enter the taxable amount from Box 2a on your Form 1040. If you received more than one pension, add all the taxable amounts together. You may also owe estimated tax payments if your pension does not have enough tax withheld — your pension payer can adjust the withholding if you submit Form W-4P.
Keep your Form 1099-R with your tax records for at least three years in case the IRS asks questions about your pension income.
Tax withholding from your pension payments
Your pension payer can withhold federal income tax from each payment you receive, similar to how an employer withholds tax from a paycheck. You control the withholding amount by submitting Form W-4P to your pension administrator. If you do not submit a form, the payer will withhold tax at a default rate (usually 10 percent for periodic payments).
You can request no withholding, though this means you will owe the full tax bill when you file your return. Most retirees choose to have some tax withheld to avoid a large payment in April. If you have other income (a job, investment income, or a spouse's income), you may need to adjust your withholding to avoid underpaying tax for the year.
If too much tax is withheld, you receive a refund when you file your return. If too little is withheld, you owe the difference. You can change your withholding at any time by submitting a new Form W-4P.
Frequently Asked Questions
Is my entire pension taxable if my employer paid for it?
Yes, if your employer funded the pension entirely with pre-tax contributions (money deducted from your paycheck before income tax), the full amount is taxable when you receive it. You owe income tax on the entire payment. If you made after-tax contributions, only the earnings on those contributions are taxable.
What if I do not receive a Form 1099-R?
Contact your pension administrator or former employer immediately. They are required to send it by January 31. If they cannot locate your address, ask them to mail it to your current address or provide it electronically. You cannot file your tax return without this form because you will not know the taxable amount.
Can I reduce my pension taxes by donating to charity?
If you are age 70½ or older, you can transfer up to $100,000 per year directly from your IRA to a may have access to charity, and that amount does not count as taxable income. This does not apply to traditional pensions, only IRAs. Consult a tax professional about whether this strategy works for your situation.
Do I owe tax on my pension if I live outside the United States?
Yes, U.S. citizens and permanent residents owe federal income tax on worldwide income, including pensions, regardless of where they live. You may also owe tax in the country where you reside. Tax treaties between the U.S. and other countries sometimes prevent double taxation, but you should consult a tax professional familiar with expatriate tax law.
What happens if I roll my pension into an IRA?
If you roll a pension into a traditional IRA, the rollover itself is not taxable. However, when you later withdraw money from the IRA, the same tax rules apply — you owe tax on the taxable portion. If you roll it into a Roth IRA, you owe tax on the full amount in the year of the rollover, but future withdrawals are tax-free.