Idaho Paycheck Calculator (2026)
Estimate your Idaho take-home pay after federal income tax, Social Security, Medicare and Idaho's flat 5.3% income tax.
Idaho flat income tax in 2026
Idaho uses a single flat income tax rate of 5.3%. The first $4,811 of taxable income for single filers ($9,622 for married couples filing jointly) is taxed at 0%.
Idaho follows the federal standard deduction, which is $16,100 for single filers and $32,200 for married couples filing jointly in 2026. Rates and thresholds are indexed or changed by the legislature, so check the Idaho State Tax Commission for the latest numbers.
Example take-home pay in Idaho
Single filer, no 401(k), paid every 2 weeks:
Idaho income tax brackets for 2026
These are the rates applied to your Idaho taxable income, which is your pay after the deductions and exemptions described above.
| Single filers | Rate | Married filing jointly | Rate |
|---|---|---|---|
| Up to $4,811 | 0% | Up to $9,622 | 0% |
| Over $4,811 | 5.3% | Over $9,622 | 5.3% |
Idaho take-home pay at different salaries
Estimated yearly figures for a single filer with no 401(k), using the same rules as the calculator above.
| Salary | Federal tax | Social Security + Medicare | Idaho taxes | Take-home / year | Every 2 weeks | Total tax rate |
|---|---|---|---|---|---|---|
| $30,000 | $1,420 | $2,295 | $482 | $25,803 | $992 | 14% |
| $50,000 | $3,820 | $3,825 | $1,542 | $40,813 | $1,570 | 18.4% |
| $75,000 | $7,670 | $5,738 | $2,867 | $58,726 | $2,259 | 21.7% |
| $100,000 | $13,170 | $7,650 | $4,192 | $74,988 | $2,884 | 25% |
| $150,000 | $24,734 | $11,475 | $6,842 | $106,949 | $4,113 | 28.7% |
How to keep more of your paycheck in Idaho
On a $60,000 salary, putting 5% ($3,000) into a traditional 401(k) reduces your yearly take-home pay by about $2,481 (roughly $95 less every 2 weeks). That is less than the full $3,000 because the contribution saves about $360 in federal income tax and about $159 in Idaho tax. The tax you avoid stays in your pocket instead of going to the government.
Filing status also matters. A married couple filing jointly with one $60,000 income takes home about $51,607 a year in Idaho, compared with $48,318 for a single filer, mostly because of the larger standard deduction and wider tax brackets.
How this calculator works
We subtract your 401(k) contribution and the 2026 standard deduction ($16,100 single, $32,200 married filing jointly), then apply the 2026 federal brackets (IRS Rev. Proc. 2025-32). Social Security is 6.2% up to $184,500 of pay, and Medicare is 1.45% (plus 0.9% on high pay). Idaho applies the federal standard deduction and then a flat 5.3% rate above the zero-rate amount.
Idaho paycheck questions
What is Idaho's income tax rate?
Idaho charges a flat 5.3% on taxable income above the zero-rate amount.
Does Idaho have local income tax?
No. Idaho cities and counties do not charge a local income tax.
Do 401(k) contributions lower Idaho tax?
Yes. Pre-tax contributions reduce your Idaho taxable income.
Rates last updated: October 2026. This is an estimate and does not include credits, benefits or W-4 changes. Official source: Idaho State Tax Commission.