Social Security’s $25,000 Tax Threshold Hasn’t Changed Since 1984. Here’s Who Pays for It
Social Security taxes were supposed to hit only wealthy retirees when the rules were written, but a frozen threshold from four decades ago has quietly pulled millions of ordinary seniors into the taxable zone, and the problem is only getting…
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Many Americans look forward to collecting Social Security in retirement. But once those monthly checks start rolling in, there’s often an unpleasant surprise — a tax bill.
It may shock you to learn that Social Security benefits can be taxable in retirement, since the way those benefits are primarily earned is by paying taxes on wages. In fact, President Trump tried to eliminate taxes on Social Security. But all he actually managed to accomplish was to temporarily let most seniors off the hook, thanks to the limited-time $6,000 deduction that came with the One Big Beautiful Bill Act.
Making matters worse is that the thresholds where Social Security taxes apply haven’t changed in decades. And that means that as benefits increase over the years, more seniors could eventually be subject to those taxes.
How taxes on Social Security work
Social Security benefits are taxed based on provisional income, which is calculated as the sum of adjusted gross income, tax-exempt interest income, and 50% of annual Social Security benefits.
If the total reaches $25,000 for single tax filers, up to 50% of Social Security benefits may be subject to federal income tax. For married couples filing jointly, a provisional income of $32,000 opens the door to taxes on up to 50% of benefits.
The problem is that these limits were established back in 1984 and have not budged since. In fact, the only change that’s come through is a second tier of Social Security taxation.
Single tax filers with a provisional income of over $34,000 could face taxes on up to 85% of their Social Security benefits. The same applies to joint tax filers with a provisional income of over $44,000.
Why more seniors are likely to owe taxes in the future
It would be one thing if Social Security taxes only applied to wealthy retirees. But moderate earners could easily face those taxes due to the low provisional income thresholds.
Meanwhile, Social Security benefits are eligible for a cost-of-living adjustment each year. As those raises get added to benefits, provisional incomes are likely to climb across the board. Without an inflation adjustment to the provisional income formula, the number of seniors whose benefits are taxed is likely to grow.
So why doesn’t Congress update the formula? The answer is pretty simple.
Social Security relies on revenue from taxes on benefits to pay its expenses. That’s not the program’s primary revenue source, but it’s an important one nonetheless.
As it is, Social Security is facing a major funding shortfall that could result in benefit cuts in the coming years. If more seniors are able to avoid paying taxes on their benefits due to a change in the provisional income formula, it could move benefit cuts up to a closer date or otherwise worsen Social Security’s financial situation.
As such, if you’re on Social Security and don’t owe taxes on your benefits yet, don’t assume that will always be the case. As your benefits grow, you may find that you’re suddenly on the hook. That’s an important thing to plan for so your finances aren’t thrown for a loop.
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Maurie Backman has more than a decade of experience writing about financial topics, including retirement, investing, Social Security, and real estate. Her work has appeared on sites that include The Motley Fool, USA Today, U.S. News & World Report, The Washington Post, and Kiplinger.
Prior to becoming a full-time financial writer, Maurie worked in the financial industry trading distressed debt. She then changed course and spent a few years designing electronic toys. After a stint in content marketing and UX, she shifted back into writing and has since covered everything from the housing market to estate planning to Medicare.
When she's not busy writing, Maurie can be found hiking, walking her dogs, driving her kids to their various sports practices and games, and curling up with a good book. She cooks on occasion and bakes way too often.
