Social Security Taxable Benefits Calculator (Provisional Income)

How to do it

1. 1
   Step 1: Open Social Security Taxable Benefits Calculator (Provisional Income) and add your input

   Type your numbers or text, add your file, or pick the options you need. Nothing is uploaded: everything stays in your browser.

2. 2
   Step 2: What Social Security Taxable Benefits Calculator (Provisional Income) does

   Find how much of your Social Security benefit is taxable from your provisional income.

3. 3
   Step 3: Read the result and compare

   The result appears at once. Change one value to see how the answer moves, then keep the figure that fits your case.

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   Step 4: Copy or save it

   Copy the result or download it. For an important decision, confirm it with the official source or an adviser.

About this tool

Enter your yearly Social Security benefits, your other income and any tax-exempt interest. The tool works out your provisional income, compares it with the 25,000 / 34,000 (single) or 32,000 / 44,000 (married filing jointly) bases and shows the taxable part, up to 85% of your benefits.

Provisional income

Provisional income is your adjusted gross income without Social Security, plus tax-exempt interest, plus half of your Social Security benefits.

The two steps

Between the first and second base, up to 50% of benefits are taxable. Above the second base, up to 85% are taxable: 85% of the excess over the second base plus the smaller of half of your benefits and half the gap between the bases. These base amounts were set in 1984 and 1993 and are not indexed.

Married filing separately

If you lived with your spouse at any time in the year, the bases are zero, so up to 85% of benefits are taxable. If you lived apart all year, the single bases apply (tick the box).

Worked example

A single person with $30,000 of benefits and $28,000 of other income: provisional income is $28,000 + $15,000 = $43,000. That is above $34,000, so $12,150 (40.5% of the benefits) is taxable, which costs $1,458 at a 12% rate. A married couple with the same numbers have a taxable amount of $5,500.

Tips for best results

Check every box before you rely on a result, because one wrong digit changes the whole answer. Use the exact figures from your payslip, bill, certificate or contract, and keep a note of the date you calculated. Rates, thresholds and rules change from time to time, so for tax, fees and legal matters treat the output as an estimate and confirm with the official source named on this page. You can run as many scenarios as you like; nothing is saved or sent, and refreshing the page clears the boxes.