Someone in your office has turned down overtime because it would “put them in the next bracket.” Someone else asked HR to split a bonus across two years for the same reason.
Both of them lost money doing it. Under the federal income tax, a raise can never leave you with less take-home pay than you had before.
What a bracket actually is
The common mental model is that your income lands in a bucket, and the bucket’s rate applies to the whole thing. Cross a line and the whole bucket gets taxed at the higher rate.
That is not how it works. The brackets are a ladder, and each rung is priced separately.
Your income fills the rungs from the bottom up. The first slice of taxable income is taxed at 10%. The next slice at 12%. The next at 22%. When people say “I’m in the 22% bracket,” what they mean — whether they know it or not — is that the last dollar they earned was taxed at 22%. Every dollar below it was taxed at the lower rates it fell into, and stays taxed at those rates no matter how much you earn on top.
A tax rate is a price on the next dollar, not a verdict on all of them.
The math, with the 2026 numbers
For tax year 2026, the IRS bracket thresholds for a single filer are $12,400, $50,400, $105,700, $201,775, $256,225, and $640,600, at rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%. The standard deduction is $16,100. Those figures come from Revenue Procedure 2025-32, summarized on irs.gov as the tax year 2026 inflation adjustments.
Take a single filer earning $66,000 who takes the standard deduction. Taxable income is $49,900 — just under the $50,400 line. Now give them a $4,000 raise.
| $66,000 salary | $70,000 salary | |
|---|---|---|
| Taxable income | $49,900 | $53,900 |
| Taxed at 10% | $12,400 | $12,400 |
| Taxed at 12% | $37,500 | $38,000 |
| Taxed at 22% | $0 | $3,500 |
| Federal income tax | $5,740 | $6,570 |
| Effective rate on taxable income | 11.5% | 12.2% |
The raise crossed the line into the 22% bracket. Only $3,500 of income is actually taxed at 22%. Total federal income tax rose by $830 — about 20.8% of the raise, because most of it was still taxed at 12%. Take-home pay went up by $3,170 before payroll and state taxes.
The effective rate moved by seven tenths of a percentage point. That is what “jumping a bracket” does.
Why the myth survives anyway
The belief persists because there is a real experience underneath it, and it happens with bonuses.
When your employer pays a bonus, they usually don’t run it through your normal withholding tables. They apply the flat supplemental-wage rate. For 2026 that rate is 22%, rising to 37% on supplemental wages above $1 million per employee, per IRS Publication 15. If your regular paychecks are withheld at an effective rate closer to 10%, a bonus withheld at a flat 22% looks like it got hit twice as hard.
It did — by the withholding, not by the tax. Withholding is an estimate collected in advance. The actual tax on that bonus is calculated at filing time along with everything else, and if too much was withheld, it comes back as part of your refund. The bonus was never taxed at a special punitive rate. It just had a blunter estimate applied to it.
Where the myth is actually true
There is a version of this fear that is correct, and it is worth knowing which one you’re facing. Some thresholds in the tax and benefits system are genuine cliffs: cross by a dollar and you lose something whole.
The clearest example is Medicare’s income-related monthly adjustment amount. For 2026, CMS set the standard Part B premium at $202.90 a month. A beneficiary filing individually with modified adjusted gross income of $109,000 or less pays that. At $109,000.01, the total premium becomes $284.10 — a surcharge of $81.20 a month, or $974.40 for the year, triggered by one extra dollar of income two years earlier.
Marketplace health insurance subsidies, income-driven student loan payments, and various credit phase-outs have their own step functions and phase-out ranges. These are real, and they are the actual reason to sometimes manage income around a threshold.
But note the difference. A cliff is a benefit you lose, or a surcharge you gain, at a fixed line. The income tax brackets are not cliffs. Nothing steps at $50,400 except the rate on the next dollar.
What to do with this
If you are weighing overtime, a raise, a second job, or a bonus, and the only thing making you hesitate is the bracket, take it. The federal income tax cannot make more money worth less.
If you are near retirement age, near a subsidy threshold, or on an income-driven repayment plan, the calculation is different, and it is worth checking the specific program’s threshold rather than the tax table. Those are the places where the extra dollar can actually cost you more than a dollar.
And if you got a bonus and the withholding looked brutal: nothing went wrong. You paid an estimate. The bill gets settled in April.