When people think about Social Security, they often picture a steady check that arrives every month in retirement. What surprises many is that those benefits aren’t always tax-free. In fact, depending on your other income, up to 85% of your Social Security can be taxable.
Here’s how it works. The IRS looks at your “provisional income,” which is basically:
- Your adjusted gross income (including wages, IRA withdrawals, and dividends),
- Plus any tax-free interest,
- Plus half of your Social Security benefits.
Based on that number, the tax treatment falls into three bands:
- If your provisional income is below $25,000 (single) or $32,000 (married), your benefits are tax-free.
- If it falls between $25,000–$34,000 (single) or $32,000–$44,000 (married), up to 50% of your benefits may be taxable.
- Above those levels, up to 85% of your benefits are subject to income tax.
It’s worth noting: “85% taxable” doesn’t mean you lose 85% of your check; it just means that portion is included in your taxable income, and then taxed at whatever bracket you fall into. Still, the effect can feel like a sudden tax hit, especially when combined with Required Minimum Distributions (RMDs) from retirement accounts. That’s the so-called “tax torpedo” retirees often run into: modest withdrawals can make a much larger slice of Social Security taxable, spiking your overall tax bill.
The key takeaway? How much of your Social Security is taxable depends not just on your benefits, but on the timing of when you claim, how much you withdraw from retirement accounts, and what other income sources you have.
If you want to see how much of your Social Security check could be going to the IRS, click below to request your Retirement Tax Compass. In just a few minutes, we’ll show you how Social Security and RMDs interact in your specific situation, and what that might mean for your retirement taxes.