Idaho Paycheck Calculator
Figure basis: Official Idaho State Tax CommissionThis Idaho paycheck calculator estimates your take-home pay after the taxes withheld from a typical wage. Enter your gross pay, choose how often you are paid (weekly, every two weeks, twice a month or monthly) and select your filing status to see a full breakdown of every deduction and your net pay. The estimate combines four withholdings: federal income tax, calculated with the 2026 Internal Revenue Service annualised percentage method; Social Security at 6.2% up to the 2026 wage base of $184,500.00; Medicare at 1.45% on all wages; and Idaho state income tax withholding, applied with the brackets published by the Idaho State Tax Commission for tax year 2025. Results update as you type and the page link captures your inputs so you can save or share a calculation. This estimate covers federal withholding, FICA and state income tax only; State Disability Insurance where a state levies it, and any city or county local income tax, are not included and are noted separately. Use it to check a payslip, compare an offer, or plan a pre-tax contribution.
A $5,000 biweekly paycheck (single filer) in Idaho is about $3,617.91 take-home, after federal income tax $766.69, Social Security $310.00, Medicare $72.50 and Idaho income tax $232.89.
How the Idaho paycheck calculation works
annual gross = gross per period x pay periods per year
federal withholding = IRS Pub 15-T annualised percentage method, de-annualised
Social Security = min(annual gross, $184,500.00) x 6.2% / periods
Medicare = annual gross x 1.45% / periods
state withholding = Idaho income tax on annual gross / periods
take-home = gross per period - federal - Social Security - Medicare - state
Worked example
A single filer paid $5,000.00 every two weeks (26 pay periods a year) in Idaho, for 2026:
- Annual gross = $5,000.00 x 26 = $130,000.00
- Federal income tax withheld this period = $766.69
- Social Security = $310.00; Medicare = $72.50
- Idaho income tax withheld = $232.89
- Take-home = $5,000.00 - $766.69 - $310.00 - $72.50 - $232.89 = $3,617.91
Idaho's flat 5.3% and the zero-rate slice on your paycheck
Idaho withholds a flat 5.3% for state income tax, the rate set by House Bill 40 and effective from January 1, 2025, applied on top of federal withholding, Social Security and Medicare. Because the rate is the same for every filing status, a single filer and a married couple face the same marginal rate on each taxable dollar of wages. On this calculator the Idaho line is that state withholding, sitting alongside the three federal deductions.
The detail that keeps Idaho take-home a little higher than a blunt 5.3% cut suggests is that the tax is not flat from the first dollar. Idaho applies a 0% rate to an initial slice of taxable income, roughly the first $4,811 for a single filer and $9,622 for a married couple filing jointly, with 5.3% taking over above that. So the effective rate on a modest wage is below the headline, and a quick income times 5.3% estimate overstates the state bill.
Idaho also conforms to the federal standard deduction rather than setting its own, so for 2025 the tables shield $15,750 of a single filer's wages and $31,500 for a married couple filing jointly before the rate applies, the larger amounts set under recent federal law. Idaho charges no local income tax, so the state row here is the whole state-level story. This estimate covers federal tax, FICA and Idaho state withholding only.
Idaho paycheck calculator: frequently asked questions
How much is take-home pay on a $5,000 biweekly paycheck in Idaho?
A single filer earning $5,000 every two weeks in Idaho keeps about $3,617.91 after federal income tax withholding ($766.69), Social Security ($310.00), Medicare ($72.50) and Idaho state income tax withholding ($232.89). Enter your own gross pay, pay frequency and filing status above for your figure.
Does Idaho have a state income tax withheld from paychecks?
Yes. Idaho income tax is withheld from wages in addition to federal income tax and FICA. This calculator applies the Idaho brackets published by the Idaho State Tax Commission (tax year 2025) using the annualised method.
What FICA taxes are withheld from a Idaho paycheck?
Social Security is withheld at 6.2% on wages up to the 2026 wage base of $184,500.00, and Medicare at 1.45% on all wages, with an additional 0.9% Medicare tax on wages above the filing-status threshold. These are federal taxes that apply to wages in every state.
Does this Idaho paycheck estimate include SDI or local taxes?
No. This estimate covers federal income tax withholding, Social Security, Medicare and Idaho state income tax withholding. State Disability Insurance (SDI), where a state levies it, and any city or county local income taxes are not included; check your state and local authorities for those.
Official sources
- Federal income tax withholding and standard deduction (tax year 2026): US Internal Revenue Service, as at Jun 12, 2026.
- Social Security wage base and FICA rates (2026): US Social Security Administration and IRS Topic 751, as at Jun 12, 2026.
- Idaho income tax brackets (tax year 2025): Idaho State Tax Commission, as at Jul 16, 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 25 June 2026. See our methodology. General information, not financial or tax advice. State Disability Insurance and local income taxes are not included.