$21 an hour after taxes in Idaho.

About $35,815 a year, $2,985 a month, for a single filer paid every two weeks in 2026.

Every two weeks

$1,377.51

$1,680.00 gross, 18.0% in taxes. $35,815 a year in Idaho.

Gross pay: $1,680.00
Federal income tax7.0% of gross: -$117.75
Social Security6.2% of gross: -$104.16
Medicare1.4% of gross: -$24.36
Idaho income tax3.3% of gross: -$56.22
Take-home: $1,377.51

Per year, month, paycheck.

$21 an hour after taxes in Idaho by filing status
Filing status	Year	Month	Week	Tax rate
Single	$35,815	$2,985	$689	18.0%
Married filing jointly	$38,582	$3,215	$742	11.7%
Head of household	$36,887	$3,074	$709	15.6%

Standard W-4 for each status, no pre-tax deductions, paid every two weeks, 2026 tables. Open the calculator to change any of it.

Other wages in Idaho.

$21 an hour in other states.

Questions people ask

How much is $21 an hour after taxes in Idaho?

About $35,815 a year for a single filer in 2026: $2,985 a month, $1,377.51 every two weeks.

$21 an hour is how much a year?

$43,680 before tax at 40 hours a week for 52 weeks.

How is federal income tax withheld from my paycheck?

Employers use the IRS percentage method in Publication 15-T: your pay for the period is annualized, adjusted by the entries on your Form W-4, run through the 2026 tables, and divided back by the number of pay periods.

How much Social Security and Medicare comes out?

6.2% Social Security on wages up to $184,500 in 2026, and 1.45% Medicare on all wages, plus 0.9% Additional Medicare once your wages for the year pass $200,000.

Sources

Checked against these sources on October 30, 2026.