Social Security Benefits Tax Calculator
Calculate how much of your Social Security benefits are taxable based on combined income.
By Konstantin Iakovlev · Updated April 2026 · Source: IRS — Forms, Instructions & Publications
Taxable Portion
85%
Taxable Amount
$17,000.00
Est. Tax on SS
$3,740.00
Taxation Details
| Other Income (AGI) | $50,000.00 |
| Social Security Benefits | $20,000.00 |
| 50% of SS Benefits | $10,000.00 |
| Combined Income | $60,000.00 |
| Taxable Portion of SS | 85% |
| Taxable SS Amount | $17,000.00 |
| Estimated Marginal Tax Rate | 22% |
| Estimated Federal Tax on SS | $3,740.00 |
Thresholds (Single)
| Combined income below $25,000 | 0% taxable |
| Combined income $25,000 - $34,000 | 50% taxable |
| Combined income above $34,000 | 85% taxable |
Use the Social Security Benefits Tax Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
How It Works
How much of your Social Security check the IRS can tax is the question this tool settles. The answer matters for planning, since as much as 85% of your benefits may face federal income tax and shape what you owe for 2026.
The calculation starts from your Modified Adjusted Gross Income (MAGI), which takes your Adjusted Gross Income (AGI) and adds tax-exempt interest plus 50% of your Social Security benefits. Benefits only become taxable once that MAGI clears the relevant threshold, set at $32,000 for single filers and $44,000 for married couples filing jointly in 2026.
Tax-exempt interest is easy to leave out of MAGI, and skipping it understates how much of your benefit is actually taxable, so include it. State treatment is another wrinkle, since rules on taxing Social Security differ from state to state; the scope here is federal taxation only.
Example: Single Filer, $25,000 Social Security, $20,000 Other Income
- 1 Input your total annual Social Security benefits, your other adjusted gross income (AGI), and any tax-exempt interest income. For example: $25,000 Social Security, $20,000 AGI, $0 tax-exempt interest.
- 2 The calculator will first determine your MAGI. In this example, $20,000 (AGI) + $0 (tax-exempt interest) + $12,500 (50% of Social Security) = $32,500. Since this exceeds the $25,000 threshold for single filers but not the $34,000 threshold, 50% of your benefits are taxable.
- 3 Based on the calculation, approximately $12,500 of your Social Security benefits would be subject to federal income tax.
- 4 This result helps you anticipate your tax obligations. You can choose to have federal income tax withheld from your Social Security benefits or make estimated tax payments throughout the year to avoid a large tax bill at year-end.
Source: IRS — Forms, Instructions & Publications · Last updated: April 2026
Frequently Asked Questions
How do I know if my Social Security benefits are taxable?
Can I avoid paying taxes on Social Security?
What is the maximum monthly Social Security payment at age 70 in 2026?
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