Pre-tax retirement savings shrink your taxable income, so each dollar saved costs you less than a dollar of take-home pay.
401(k) rate
Saved per year
Federal tax
Take-home
0%
$0
$23,534
$110,374
5%
$7,250
$21,794
$104,864
10%
$14,500
$20,054
$99,354
15%
$21,750
$18,314
$93,844
With state income tax
State tax depends on where you live. These rows show the effect of a flat rate on top of federal taxes; plug your own state's rate into the paycheck calculator.
About $110,374 for a single filer in a state with no income tax, based on 2026 federal brackets, Social Security and Medicare. That is $9,197.79 a month or $4,245.13 every two weeks.
What tax bracket is $145,000 in?
For a single filer, after the standard deduction the top dollars are taxed at 24%. The average federal income tax rate is much lower, 16.2%, because lower brackets apply first.
How much does a 401(k) save in tax?
Putting 10% ($14,500) into a traditional 401(k) lowers federal income tax by about $3,480 a year for a single filer, so take-home pay drops by less than the amount you save.