$42 an hour after taxes in Idaho.

About $66,511 a year, $5,543 a month, for a single filer paid every two weeks in 2026.

Every two weeks

$2,558.12

$3,360.00 gross, 23.9% in taxes. $66,511 a year in Idaho.

Gross pay: $3,360.00
Federal income tax11.9% of gross: -$399.58
Social Security6.2% of gross: -$208.32
Medicare1.4% of gross: -$48.72
Idaho income tax4.3% of gross: -$145.26
Take-home: $2,558.12

Per year, month, paycheck.

$42 an hour after taxes in Idaho by filing status
Filing status	Year	Month	Week	Tax rate
Single	$66,511	$5,543	$1,279	23.9%
Married filing jointly	$71,630	$5,969	$1,378	18.0%
Head of household	$69,669	$5,806	$1,340	20.3%

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.

$42 an hour in other states.

Questions people ask

How much is $42 an hour after taxes in Idaho?

About $66,511 a year for a single filer in 2026: $5,543 a month, $2,558.12 every two weeks.

$42 an hour is how much a year?

$87,360 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.