# Idaho paycheck calculator (2026)

Idaho W-2 employees checking a mostly flat-rate paycheck after the zero band and federal standard deduction.

Idaho taxes most taxable wages at 5.3% after a zero band and a standard deduction that tracks federal amounts in this model. The zero-bracket width may still be a 2025 inflation figure. Boise and remote Idaho W-2 employees use this page to see how a mostly flat state line sits next to Washington (no wage tax, optional WA Cares) or Utah. No city income tax is modeled. Federal tax uses 2026 IRS brackets; FICA uses the $184,500 wage base. Sources are IRS Rev. Proc. 2025-32 and the Tax Foundation 2026 state table. Not tax-preparation software.

This is a W-2 style withholding approximation, not a full Idaho Form resident return. We annualize your pay, subtract pretax 401(k) and section 125 health premiums from federal wages (health premiums also reduce FICA wages), apply the 2026 IRS standard deduction, then apply Idaho’s published rate structure. We do not model local city or county income taxes, itemized deductions, or most credits.

Use the calculator to compare pay frequencies (hourly through annual), pretax 401(k) as a percent or a dollar amount per paycheck, and optional extra federal withholding. Last reviewed against IRS, SSA, and Tax Foundation 2026 publications on August 24, 2026.

Data note: Idaho zero-bracket width may be a 2025 inflation figure. Treat the Idaho line as an estimate and confirm current withholding tables with your employer or the state department of revenue.

## Tax model notes

- Kind: flat
- (none)


Data note: Idaho zero-bracket width may be a 2025 inflation figure.

## Sample estimate ($80,000 single, no 401(k))

- Gross: $80,000.00
- Federal income tax: $8,770.00
- Social Security: $4,960.00
- Medicare: $1,160.00
- State income tax: $3,131.72
- Net / take-home: $61,978.28 (effective tax 22.5%)
- Per paycheck net: $61,978.28 (1 periods)

Label: engine estimate, not a pay stub.

## FAQ

### Does Idaho have a state income tax on wages?

Yes. Idaho has a flat 5.3% state income tax on taxable wage income in 2026. Local income taxes, if any, are not included in this estimate.

### What Idaho income tax rate does this calculator use for 2026?

A single rate of 5.3% after the deductions and exemptions listed in our methodology. Idaho zero-bracket width may be a 2025 inflation figure.

### Is this my actual take-home pay?

No. It is an estimate of typical W-2 withholding. It omits local taxes (except a note on New York City), most credits (including the federal Child Tax Credit), unemployment insurance, wage-garnishment, and employer-specific benefits. Use it to plan, not to file.

### Does a 401(k) contribution reduce Social Security tax?

Usually no. Traditional 401(k) deferrals reduce federal (and often state) taxable wages, but they remain subject to Social Security and Medicare. Pre-tax health insurance premiums under a cafeteria plan generally reduce FICA wages as well.

## Related

- [Washington](https://takehomecash.com/washington-paycheck-calculator/index.md)
- [Utah](https://takehomecash.com/utah-paycheck-calculator/index.md)
- [Montana](https://takehomecash.com/montana-paycheck-calculator/index.md)
- [Oregon](https://takehomecash.com/oregon-paycheck-calculator/index.md)