Idaho Paycheck Calculator 2026
This Idaho paycheck calculator shows what actually lands in your bank account each pay period in 2026. Enter your gross salary and the tool applies 2026 federal brackets, Social Security and Medicare, and Idaho withholding, then splits the result across weekly, biweekly, semi-monthly and monthly pay schedules. Idaho uses a flat personal income tax of 5.30% applied to taxable income after a state standard deduction of $16,100.
Idaho Paycheck Calculator
Your salary before any deductions.
How Idaho payroll withholding works
Every Idaho paycheck is reduced in the same order: pre-tax deductions first (401(k), HSA, employer health premiums), then federal income tax on what remains, then FICA on your full gross, then Idaho state withholding.
FICA is fixed nationwide in 2026: 6.2% Social Security on the first $184,500 of wages and 1.45% Medicare on everything, with an extra 0.9% Medicare surtax above $200,000. Only the state layer changes when you move, which is why two workers earning the same salary in Idaho and Washington see different deposits.
Idaho has no separate city or county income tax, so the state figure above is the full sub-federal income tax you pay.
Pay frequency in Idaho
Most tech employers around Boise run biweekly payroll (26 checks a year), while public-sector and salaried office roles often use semi-monthly (24 checks). Biweekly means two months each year contain three paychecks — a useful budgeting quirk if your rent is around $1,350.
Switching frequency does not change your annual tax; it only changes how withholding is spread. If your employer withholds per-period using annualized tables, a three-paycheck month can look artificially light on tax.
Budgeting a Boise paycheck
Cost of living in Idaho sits 1% below the national average (index 99), median household income is $74,942, and a one-bedroom apartment in Boise rents for roughly $1,350 a month.
Idaho transitioned from progressive brackets to a single flat 5.8% rate in 2023, and has already cut it twice to 5.3% in 2025.
Local and payroll taxes Idaho adds on top
Idaho adds no state-mandated employee payroll deduction beyond FICA, so nothing extra is taken from your gross pay at the state level.
Idaho has no separate city or county income tax, so the state figure above is the full sub-federal income tax you pay.
Payroll systems apply these local layers automatically, so check a real Idaho pay stub against the estimate above: a missing local tax line is the usual reason a paycheck comes in lower than a state-only calculator suggests.
Working across a state line from Idaho
Idaho has no income-tax reciprocity agreements, so if you live here and work across a state line you generally file a nonresident return in the work state and claim a credit at home to avoid double taxation.
Remote and hybrid work complicates this further: most states tax income where the work is physically performed, so a Boise resident spending part of the year at a client site in Washington may owe a nonresident return there. Keep a day-count log if you split time between states.
The rest of your Idaho tax bill
Idaho charges a 6% state sales tax, homeowners pay an average effective property tax of 0.63% of market value, and the minimum wage in force during 2026 is $7.25 an hour.
Few local add-ons, so 6% is close to the effective statewide rate.
Income tax is only one part of a state's take. Idaho recovers revenue through sales and property tax as well, which is why headline income tax rates alone are a poor guide to how far a salary really goes. Idaho exempts Social Security and offers a limited deduction for certain public pensions at 65+.
Idaho vs Washington on the same salary
On a $75,000 salary, a single filer keeps about $58,471 a year in Idaho against roughly $61,593 in Washington — a difference of $3,122, or $260 a month.
Effective combined rates are 22.0% in Idaho and 17.9% in Washington. Set that gap against living costs: index 99 here versus 116 there, with property tax at 0.63% and 0.94% respectively.
Idaho income tax brackets 2026 (single filer)
| Taxable income | Rate |
|---|---|
| $0 and up | 5.30% |