Idaho Paycheck Calculator

Four tax lines come out of an Idaho paycheck: federal income tax, Social Security (6.2% up to $184,500), Medicare (1.45%), and Idaho state withholding. No Idaho city or county taxes wages, and the state has no disability, paid-leave, or long-term care premium. Anything else on your stub is your own election: 401(k), health premiums, HSA, and similar benefits.

The percentage computation method annualizes your pay, subtracts a zero bracket, and withholds 5.3% of the rest. The zero bracket matches the federal standard deduction: $16,100 if you checked box A (single or head of household) on Form ID W-4, $32,200 for box B (married), and $16,100 again for box C, which married employees check to withhold at the single amount when both spouses work. This calculator applies $16,100 to single and head of household and $32,200 to married filing jointly.

Until July 2026 Idaho also subtracted $3,868 a year for each allowance, tied to the Idaho Child Tax Credit. That credit sunset under Idaho Code 63-3029L, so the tables issued July 23, 2026 set the allowance to $0 and raised the zero bracket from $15,000 to $16,100 (single) and from $30,000 to $32,200 (married). Employers apply the new tables to wages paid after July 31, 2026, with no catch-up on earlier paychecks. Allowances on Form ID W-4 no longer change withholding; only the status box and extra dollar amount do.

Bonuses paid separately are withheld at a flat 5.3%, which this site's bonus calculator applies for Idaho. Idaho has no reciprocity agreements, so nonresidents are withheld on wages earned in Idaho. On the return side, Idaho's flat 5.3% applies to taxable income that starts from federal taxable income, using the federal standard deduction of $16,100 single, $32,200 married filing jointly, or $24,150 head of household; withholding uses $16,100 for head of household, so that status prepays on $8,050 more than the return will tax.