If you’ve retired and receive Social Security as your main source of income, you may be unsure whether you still need to file a federal tax return. Many retirees assume they can stop once they reach a certain age, but the IRS bases that requirement on how much you earn and where it comes from.
How Retirement Income Gets Taxed
The IRS doesn’t automatically exempt retirees from filing a federal tax return. For 2026, an individual age 65 or older generally needs to file when gross income is at least $18,150. For married couples filing jointly, the threshold is $33,850 when one spouse is 65 or older and $35,500 if both meet the age requirement. Thresholds vary based on your status, age and other circumstances. 1
While Social Security may be your primary source of income, pensions, traditional IRA or 401(k) withdrawals, part-time wages, rental payments and investment earnings can also count toward the total. Those additional amounts may be enough to create a federal tax filing requirement, even if your Social Security benefits alone would not.
Social Security benefits carry separate tax rules. The IRS determines whether they’re taxable using combined earnings, which includes your adjusted gross income, any nontaxable interest and one-half of your benefits. Depending on that combined amount, up to 50% or 85% of your benefits may be taxable. 2
Even if you aren’t required to submit, doing so may still make financial sense. Some retirees choose to because they can claim refunds of taxes withheld from pension payments or retirement account distributions, or capture applicable credits. A financial advisor can help you determine your filing requirements and optimize your tax strategy.
What You May Owe in Retirement Taxes
Crossing the filing threshold doesn’t automatically create a tax bill. The amount owed depends on the mix of retirement assets, deductions and credits.
As an example, let’s assume that you are 67, single and receive $30,000 in annual Social Security benefits plus a $25,000 withdrawal from a traditional IRA. Following the Social Security tax formula, you would have to take half of your benefits ($15,000) and combine them with the IRA withdrawal for a total of $40,000. That would make up to 85% of your Social Security benefits taxable. Here’s how your gross income would be calculated:
| Income Source | Calculation | Amount |
|---|---|---|
| Traditional IRA withdrawal | — | $25,000 |
| Taxable Social Security | 85% × $30,000 | $25,500 |
| Gross income | $25,000 + $25,500 | $50,500 |
Next, you would have to subtract your 2026 standard deduction to determine your taxable income:
| Calculation | Amount |
|---|---|
| Gross income | $50,500 |
| Standard deduction (single, age 65+) | ($18,150) |
| Taxable income | $32,350 |
Using the 2026 federal income tax brackets, the first $12,400 of taxable income is taxed at 10%. The remaining $19,950 ($32,350 − $12,400) falls into the 12% bracket. 3
| Tax bracket | Calculation | Tax owed |
|---|---|---|
| 10% on first $12,400 | $12,400 × 0.10 | $1,240 |
| 12% on remaining $22,000 | $22,000 × 0.12 | $2,640 |
| Estimated federal income tax | $1,240 + $2,640 | $3,880 |
This example doesn’t include state income taxes, tax credits or other adjustments that could change the final amount owed.
One Strategy That Could Help Manage Taxes
Taking a large withdrawal from your retirement account in a single year could cause more of your Social Security benefits to become taxable. That additional income also may push you into a higher federal tax bracket. If you don’t need the full amount right away, spreading distributions over several years may keep more of your income taxed at lower rates. Whether you save money depends on your specific finances.
Before you start taking distributions, a tax financial advisor who specializes in tax planning could help you model different withdrawal schedules and estimate the impact of each on your income.
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