Idaho taxes wages at a single rate of 5.695%, which turns a $75,000 salary into $3,161 of state tax and $54,478 of take-home pay. Change the salary, pay frequency, filing status or 401(k) rate to re-run it.
Federal tax, FICA, Idaho state tax & 401(k) — prefilled for Idaho
📈 Live: US inflation is currently 3.4% (CPI, August 2026) — rising prices erode the buying power of your take-home pay, so weigh it when comparing salaries or job offers across states.
Idaho takes $3,161 out of a $75,000 salary, leaving $54,478 against $57,639 in no-wage-tax Texas. The doughnut shows how the rest of that gross divides.
Idaho $54,478 vs Texas $57,639
Idaho: take-home, federal, state & FICA
Calculation parameters: Single filer, standard federal deduction ($16,100), zero additional withholdings, $75,000 annual salary, 24 pay periods. Models use 2026 flat-tax parameters from the Idaho State Tax Commission.
The Idaho State Tax Commission operates a highly streamlined flat tax, having eliminated its historical progressive brackets. For 2026, the state individual income tax is locked at a flat 5.3% on all taxable W-2 wages.
Because Idaho strictly conforms to the federal standard deduction ($16,100 for a single filer in 2026), the 5.3% rate is not applied from the first dollar. Instead, the rate is applied only to the remaining $58,900 of taxable income for a $75,000 earner, resulting in an estimated $3,121 annual tax liability. Employees must submit Idaho's specific Form ID W-4 to their payroll department to calibrate their precise withholding, as the state no longer perfectly mirrors federal allowances.
Idaho is a highly simplified payroll state. The state explicitly forbids local municipalities or counties (like Boise, Nampa, or Ada County) from levying municipal income taxes or occupational privilege fees on individual wages.
Furthermore, Idaho does not mandate any employee-side payroll deductions for State Disability Insurance (SDI) or Paid Family and Medical Leave (PFML). A worker's gross pay is reduced strictly by federal taxes, FICA, and the 5.3% state income tax.
Idaho charges 5.695% on every dollar of taxable income, with no bands to cross, once the $15,000 standard deduction has come off. On $75,000 that works out to $3,161, an effective 4.21% of gross, and nothing at all is due below $15,957.
Annual take-home at six salary points for a single filer deferring 6% into a 401(k). The ID column climbs in a straight line from $1,287 to $9,852, because the same rate applies at both ends.
| Gross salary | Federal tax | ID state tax | FICA | Take-home /yr | Take-home /mo |
|---|---|---|---|---|---|
| $40,000 | $2,474 | $1,287 | $3,060 | $30,779 | $2,565 |
| $60,000 | $4,730 | $2,358 | $4,590 | $44,723 | $3,727 |
| $80,000 | $8,158 | $3,428 | $6,120 | $57,494 | $4,791 |
| $100,000 | $12,294 | $4,499 | $7,650 | $69,557 | $5,796 |
| $150,000 | $23,087 | $7,176 | $11,475 | $99,262 | $8,272 |
| $200,000 | $34,367 | $9,852 | $14,339 | $129,442 | $10,787 |
| Metric | Idaho | No-tax state (TX) |
|---|---|---|
| State income tax (per year) | $3,161 | $0 |
| Federal income tax | $7,124 | $7,124 |
| Social Security + Medicare | $5,738 | $5,738 |
| Annual take-home pay | $54,478 | $57,639 |
| Effective total tax rate | 21.4% | 17.1% |
That $3,161 a year — about $263 a month — is what Idaho's income tax costs against a state that charges none. On this salary it ranks 14th of 51 by state income tax paid, just behind Maryland at 4.23%.
Take-home pay is gross salary minus five separate withholdings, each with its own rule and its own base. Two are federal and fixed nationwide, two are FICA payroll taxes with their own ceilings, and one is set by Idaho. Idaho applies a single flat rate of 5.695% to taxable income, so unlike a progressive state your marginal and average state rates converge as income rises. On $109,000 the state takes $4,981, an effective 4.57% of gross. A flat rate makes the arithmetic simple but it applies from the first taxable dollar, so the deduction matters more than the bracket structure. Note also that the 401(k) contribution comes out before federal income tax is computed but not before Social Security and Medicare — a detail that trips up most hand calculations.
Take-home = Gross − 401(k) − Federal income tax − Social Security − Medicare − State taxFederal = brackets applied to (gross − 401(k) − $15,000 standard deduction)State income tax = (gross − 401(k) − state standard deduction) × 5.695%where:
Assumptions: Single filer, standard deduction, 6% traditional 401(k), no other pre-tax benefits, credits or local income tax. Health premiums, HSA contributions and city taxes (where they exist) would each change the result. 2026 federal figures.
ReferenceIRS Publication 15-T
Rather than a round number, this example uses the salary Idaho's own housing costs imply: a median-priced $445,000 home carries a $2,534 monthly payment, and the 28% front-end ratio lenders underwrite to puts that within reach at about $109,000 a year. Here is where that salary actually goes for a single filer contributing 6% to a traditional 401(k).
Result$74,985 a year — $6,249 a month, $2,884 per biweekly cheque
Total tax burden is $27,475, an effective 25.2% of gross — of which Idaho takes 4.57%. The $6,540 401(k) deferral is not a tax; it is still your money.
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