Idaho Payroll Tax Calculator 2026
Calculate Idaho state income tax, federal withholding, Social Security, Medicare, and net take-home pay.
2026 Idaho tax rates · FICA · Idaho ID W-4
State Income Tax
Up to 5.8% (progressive)
Social Security
6.2%
Medicare
1.45%
State Form
Idaho ID W-4
Calculate Your Idaho Paycheck
Enter your salary or hourly rate and get a full breakdown: Idaho state tax, federal income tax, Social Security, Medicare, and exact net pay.
Open Idaho Payroll Tax CalculatorFree · No signup · 2026 IRS & ID rates
Idaho Tax Guide
Idaho Payroll Tax Overview 2026
Idaho uses a progressive income tax with a top rate of 5.8%. Higher earners pay a larger percentage of their income — different brackets apply to different income ranges.
Idaho has a simplified two-bracket income tax: 5.8% on income over $2,500 (single) with a 0% rate below that threshold.
Idaho is reducing its income tax rate — it was 6.5% in 2021 and has been cut to 5.8%, with further cuts likely.
Idaho Payroll Tax Summary
State Income TaxUp to 5.8% (progressive)
Tax TypeProgressive (brackets)
Social Security6.2% on first $176,100
Medicare1.45% (+ 0.9% over $200K)
FUTA (employer)0.6% on first $7,000
Employee FormIdaho ID W-4
FAQ
Idaho payroll tax questions
What is the top Idaho income tax rate for 2026?
Idaho's top income tax rate is 5.8% for 2026. This is a marginal rate — it only applies to income above the top bracket threshold. Lower income falls into lower brackets. Use the calculator above to see your effective rate.
What taxes do Idaho employees pay on their paycheck?
Idaho employees pay: (1) Federal income tax (based on W-4 withholding); (2) Social Security tax (6.2% on wages up to $176,100); (3) Medicare tax (1.45%, plus 0.9% on income over $200,000); (4) Idaho state income tax (Up to 5.8% (progressive)); The employer matches the Social Security and Medicare portions.
What payroll withholding form do Idaho employees use?
Idaho employees complete Idaho ID W-4 for state withholding in addition to the federal W-4. Employers use both forms to calculate the correct combined withholding amount.
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