For many retirees, the biggest surprise isn’t how much they spend, but rather how much of their income ends up going to the IRS. One of the most common culprits is something called the “tax torpedo.”
Here’s how it works: Social Security benefits may be tax-free, partially taxed, or up to 85% taxable, depending on your other income. The tricky part is that the IRS uses a formula called “provisional income” that counts not only wages or pensions, but also withdrawals from retirement accounts, interest, and even half of your Social Security itself.
That means a small withdrawal from an IRA or a Required Minimum Distribution (RMD) can trigger a domino effect, suddenly making more of your Social Security taxable. The result is that each extra dollar of income can feel like it’s being taxed twice: once as ordinary income, and again because it pulls more of your Social Security into the taxable column.
This is the “tax torpedo”: an unexpectedly steep jump in your tax bill even though your lifestyle hasn’t changed.
The good news is, with planning, you can often avoid the worst of it. For example:
- Roth conversions before RMD age can reduce the taxable withdrawals you’ll face later.
- Coordinating withdrawals across accounts (taxable, tax-deferred, Roth) can smooth your income and minimize spikes.
- Timing Social Security strategically, like delaying benefits until 70, makes more sense if it helps you manage taxes earlier in retirement.
The tax torpedo is a perfect example of why retirement income planning is more than just investing. It’s about understanding how different pieces of your financial life interact, and making intentional decisions to keep more of your income in your pocket instead of Uncle Sam’s.
If you’re approaching retirement or already taking RMDs, now is the time to review your withdrawal strategy and see where planning can help make sure a tax torpedo doesn’t sink your retirement.