Idaho Paycheck Calculator
Estimate your Idaho take-home pay after federal tax, FICA, and Idaho state income tax. Enter your gross pay, filing status, and pre-tax deductions to see your net pay per paycheck.
2026 rate, standard deduction, and personal exemption verified against Tax Foundation 2026 data.
- Take-home$51,571.30 · 79.34%
- Federal tax$5,620.00 · 8.65%
- Social Security + Medicare$4,972.50 · 7.65%
- Idaho tax$2,836.20 · 4.36%
| Item | Per bi-week | % of gross |
|---|---|---|
| Gross pay | $2,500.00 | 100% |
| Federal withholding | $216.15 | 8.65% |
| Social Security | $155.00 | 6.20% |
| Medicare | $36.25 | 1.45% |
| Idaho income tax | $109.08 | 4.36% |
| Take-home pay | $1,983.51 | 79.34% |
A flat rate that is not a low rate
Idaho applies a single 5.8% rate to taxable income. 'Flat' is often read as 'cheap', but Idaho charges more than several bracketed states do at middle incomes — it is simply charged at one rate rather than several.
What Idaho does offer is predictability. Your state tax is a fixed share of taxable income, so bonuses, overtime, and raises do not move you into unfamiliar territory at state level the way they can federally.
Idaho follows the federal standard deduction
Idaho's standard deduction matches the federal figure, which makes the state calculation unusually simple: your Idaho taxable income tracks your federal taxable income closely, then the flat rate applies.
It also means anything that reduces your federal taxable income reduces your Idaho bill in lockstep. A dollar into a pre-tax 401(k) saves your federal marginal rate plus 5.8%, which is one of the better combined returns among flat-tax states.
What lands on your Idaho pay stub
Federal income tax, Social Security to the annual cap, Medicare with the high-earner surcharge, and Idaho's 5.8% on taxable income. Idaho has no local income taxes and no employee-paid state payroll programme, so there is no fourth line to account for.
Idaho Form ID W-4 sets state withholding. Because the state deduction mirrors the federal one, an accurate federal W-4 usually produces reasonably accurate Idaho withholding — the two rarely drift far apart.
Comparing Idaho with its neighbours
Idaho sits between two no-income-tax states, Wyoming and Nevada, and next to Washington, which taxes no wage income but withholds payroll premiums. On an identical salary, an Idaho worker takes home measurably less than a Boise-to-Reno move would produce.
That gap is the honest cost of the comparison, and it is worth calculating rather than estimating. Run the same gross figure through this calculator for each state before treating two offers as equivalent.
How Idaho taxes your paycheck
Idaho has a flat 5.8% state income tax. Use the calculator above to estimate your take-home pay after all withholdings.
Every US paycheck also has federal income tax, Social Security (6.2% up to the annual wage base), and Medicare (1.45%, plus 0.9% on high earners) withheld. Your taxable income is your gross pay minus pre-tax deductions such as 401(k) and pre-tax health premiums.
Frequently Asked Questions
How much is taken out of a paycheck in Idaho?
Idaho paychecks have federal income tax, Social Security (6.2%), and Medicare (1.45%) withheld, plus a flat 5.8% state income tax. The exact amount depends on your pay, filing status, and pre-tax deductions.
Does Idaho have a state income tax?
Yes. Idaho levies a flat 5.8% state income tax in addition to federal taxes.
How is this take-home estimate calculated?
It applies 2026 estimated federal brackets, FICA rates, state income-tax rates, local taxes where configured, and employee payroll-program rates to your annual pay minus pre-tax deductions, then divides by your pay frequency. It is a simplified estimate, not official payroll withholding.
Is Idaho a low-tax state because it has a flat rate?
Not especially. Idaho's flat 5.8% is higher than several bracketed states charge at middle incomes. Flat means predictable, not cheap — your state tax is a fixed share of taxable income rather than a low one.
Does Idaho use the federal standard deduction?
Idaho's standard deduction matches the federal figure, so Idaho taxable income tracks federal taxable income closely. Anything reducing your federal taxable income reduces the Idaho bill in lockstep.
How does Idaho compare with Washington or Wyoming?
Both neighbours levy no income tax on wages, so an identical salary yields visibly more take-home there. Washington does withhold payroll-programme premiums; Wyoming withholds nothing at state level at all.