# My taxable Social Security benefits?

Works out how much of your Social Security benefits is taxable income, with the IRS Publication 915 worksheet: 0%, up to 50%, or up to 85%.

- Page: https://www.acalculator.org/finance/social-security-tax-calculator
- JSON spec: https://www.acalculator.org/finance/social-security-tax-calculator.json
- Version: 2798844e51d6

## Default answer

Example with the default inputs (Filing status Single or head of household, Social Security benefits $24,000.00, Other taxable income $30,000.00, Tax-exempt interest $0.00, Excluded income $0.00, Adjustments to income $0.00): Of $24,000.00 in Social Security benefits with $30,000.00 of other income, $11,300.00 is taxable (47.08% of the benefits).

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| status | Filing status | Single, head of household, qualifying surviving spouse, or married filing separately and living apart all year; married filing jointly; or married filing separately and living together at any time in the year. |
| benefits | Social Security benefits | Net benefits for the year: box 5 of all Forms SSA-1099 and RRB-1099 (both spouses on a joint return). |
| income | Other taxable income | All other income on your return: wages, taxable pensions and IRA withdrawals, taxable interest, dividends, capital gains (Worksheet 1 line 3). |
| exempt | Tax-exempt interest | Tax-exempt interest, such as municipal bond interest (Form 1040 line 2a; Worksheet 1 line 4). |
| excluded | Excluded income | Excluded adoption benefits, foreign earned income or housing, and income of bona fide residents of American Samoa or Puerto Rico (Worksheet 1 line 5). |
| adjust | Adjustments to income | Schedule 1 adjustments such as a deductible IRA contribution, HSA deduction, or half of self-employment tax (Worksheet 1 line 7; student loan interest does not count). |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| taxable | Taxable benefits | The part of your benefits that is taxable income (Worksheet 1 line 19; Form 1040 line 6b). |
| share | Share of benefits taxable | Taxable benefits divided by the benefits: 0 to 85%. |
| provisional | Provisional income | Half of the benefits plus other income, tax-exempt interest and excluded income, minus adjustments (Worksheet 1 line 8). |
| baseAmount | Base amount | $25,000, or $32,000 for a joint return; 0 for a separate return while living together. |
| maxTaxable | Most that can be taxable | 85% of the benefits (Worksheet 1 line 18). |

## Method

Provisional income = ½ benefits + other income + tax-exempt interest + exclusions − adjustments; taxable = the smaller of ½ × min(over base, second step) capped at ½ benefits plus 85% × (over base − second step), and 85% of benefits (IRS Pub 915 Worksheet 1).

## Assumptions

- Follows IRS Publication 915 Worksheet 1. The base amounts ($25,000 and $32,000) and the second step ($9,000 and $12,000) are set by law (IRC section 86) and do not change with inflation.
- Single also covers head of household, qualifying surviving spouse, and married filing separately when you lived apart from your spouse all year.
- No lump-sum payment for an earlier year (Pub 915 Worksheets 2 to 4 can lower the taxable amount) and no repayments larger than the benefits.
- Enter other income as it appears on Form 1040; for the savings bond or employer adoption exclusions, add the excluded amounts back as Pub 915 says.

## Worked examples

1. status = single, benefits = $5,980.00, income = $28,990.00, exempt = $0.00, excluded = $0.00, adjust = $0.00 gives provisional = $31,980.00, taxable = $2,990.00. Source: IRS Publication 915 (2025), Example 1 and filled-in Worksheet 1: taxable benefits $2,990.
2. status = joint, benefits = $5,600.00, income = $29,750.00, exempt = $0.00, excluded = $0.00, adjust = $1,000.00 gives provisional = $31,550.00, taxable = $0.00. Source: IRS Publication 915 (2025), Example 2 (Casey and Pat Hopkins): none of the benefits are taxable.
3. status = joint, benefits = $10,000.00, income = $40,500.00, exempt = $0.00, excluded = $0.00, adjust = $0.00 gives provisional = $45,500.00, taxable = $6,275.00, share = 62.75%. Source: IRS Publication 915 (2025), Example 3 (Jamie and Jessie Johnson): taxable benefits $6,275.
4. status = separate, benefits = $4,000.00, income = $8,000.00, exempt = $0.00, excluded = $0.00, adjust = $0.00 gives provisional = $10,000.00, taxable = $3,400.00. Source: IRS Publication 915 (2025), Example 4 (Kris Jones, married filing separately, lived together): $3,400.

## FAQ

### How much of my Social Security is taxable?

It depends on your provisional income: half of your benefits plus all your other income, including tax-exempt interest. At or below $25,000 ($32,000 on a joint return) none is taxable. Above that, up to 50% is taxable, and above $34,000 ($44,000 joint) up to 85%. Never more than 85% of the benefits is taxable.

### What is provisional income?

The IRS worksheet adds half of your Social Security benefits to your other income, tax-exempt interest and some excluded income, then subtracts some adjustments such as a deductible IRA contribution. This total is often called provisional or combined income; Publication 915 calls it line 8.

### Do the $25,000 and $32,000 limits rise with inflation?

No. The base amounts are set in section 86 of the Internal Revenue Code and have not changed since the tax started. That is why a larger share of retirees pays tax on benefits each year.

### What if I am married and file separately?

If you lived with your spouse at any time in the year, the base amount is 0: 85% of your provisional income is taxable, up to 85% of your benefits. If you lived apart all year, you use the single amounts.

### Is this the tax I owe on my benefits?

No. This is the part of your benefits that counts as taxable income. The tax on it depends on your tax bracket, deductions and credits. Add the taxable amount to your other income on Form 1040, line 6b.

## Sources

- Internal Revenue Service, Publication 915 (2025), Social Security and Equivalent Railroad Retirement Benefits, Worksheet 1 and Examples 1 to 4: https://www.irs.gov/publications/p915
- Internal Revenue Code section 86, Social security and tier 1 railroad retirement benefits: https://www.law.cornell.edu/uscode/text/26/86