They Painted the Pipe
The promise was simple. The President said it himself. No tax on Social Security. The One Big Beautiful Bill even created a new deduction for seniors. Up to $6,000 in 2025. Up to $6,000 in 2026 through 2028.
Sure.
But the deduction lands on line 13b of your 1040. It cuts your taxable income. The formula that decides how much of your Social Security gets taxed already ran. It ran on a different line. With different math. And it doesn’t care about your deduction at all.
The Formula Nobody Reads
Here is how the IRS decides to tax your Social Security. It uses something called provisional income. You take your adjusted gross income. You add your tax-free bond interest. Then you add half of your Social Security benefits. That total is your provisional income.
If it tops $25,000 for a single filer, up to 50% of your benefits become taxable. If it tops $34,000, up to 85% become taxable.
This is IRC Section 86. Congress wrote it in 1983. The thresholds took effect in 1984 and 1994. They have never been adjusted for inflation. Not once. Not in 42 years.
The Frozen Floor
That $25,000 threshold. In 1984 dollars, it meant something. It caught only the wealthiest retirees. The Greenspan Commission that recommended taxing benefits estimated about 10% of recipients would ever pay tax on their benefits.
Today, roughly half of all Social Security recipients pay it. Not because Congress voted to tax more retirees. The floor just never moved.
If that $25,000 had been indexed to inflation, it would sit at $80,636 today. Instead it sits at $25,000. Same number. Forty-two years later. I mean.
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The Wrong Line
So here is the new senior deduction. It drops your taxable income. Good. But provisional income is calculated before deductions. The §86 formula already ran. It already decided that 50% or 85% of your Social Security counts as income. The deduction shows up after. It trims the bill a little. It does not touch the formula.
Think of it this way. The pipe is broken. Water is flooding the basement. Someone came in and painted the wall a nicer color.
The law’s own language spells it out plainly enough if you read it slowly:
“Provides a new deduction to reduce seniors’ taxable income, including income from Social Security benefits.”
Look at the verb. Reduce taxable income. Not reduce provisional income. Those are two different lines on the form. The deduction does not amend Section 86. It does not move the thresholds. It reduces taxable income but does not reduce provisional income. One fires before the other.
Right.
The Ratchet
Every January it tightens. The 2026 cost of living bump added $56 a month to the average benefit. That is $672 a year. Sounds like a raise. But half of that, $336, feeds straight into provisional income. Every COLA pushes more retirees past the frozen thresholds. Every year. Automatically.
Then there is what tax planners call the torpedo. In the zone where every dollar hurts the most, every extra dollar you pull from an IRA drags another 85 cents of Social Security into taxable income. One dollar withdrawn. $1.85 of new taxable income. At the 22% bracket, that is an effective rate above 40%. On a dollar that was already taxed on the way in.
The COLA ratchets you in. The torpedo multiplies the hit. The deduction? It fires after all of this already happened.
The Shrug
Look. The deduction saves real money for some people. Nobody is arguing it does nothing. But it expires after 2028. And the frozen thresholds from 1984 and 1994 will still be there in 2029. And 2030. And 2031. The conveyor belt does not stop.
The formula is the pipe. The deduction is the paint.
The pipe is still broken.
