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
$14,270
$82,698
5%
$5,250
$13,115
$78,603
10%
$10,500
$11,960
$74,508
15%
$15,750
$10,805
$70,413
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 $82,698 for a single filer in a state with no income tax, based on 2026 federal brackets, Social Security and Medicare. That is $6,891.46 a month or $3,180.67 every two weeks.
What tax bracket is $105,000 in?
For a single filer, after the standard deduction the top dollars are taxed at 22%. The average federal income tax rate is much lower, 13.6%, because lower brackets apply first.
How much does a 401(k) save in tax?
Putting 10% ($10,500) into a traditional 401(k) lowers federal income tax by about $2,310 a year for a single filer, so take-home pay drops by less than the amount you save.