2026 official-source estimate
Idaho Paycheck Calculator
Estimate Idaho withholding from the current official percentage tables, Form ID W-4 allowances, federal income tax, and FICA.
Your paycheck details
Numbers stay in this browser and are recalculated as you type.
Replace them with your own paycheck information. WageFrame did not read or save personal wage data.
Pay classification
Work locations and home state
Loading work and residence options…
Federal withholding profile
Federal W-4 adjustments
Loading deduction options…
Year-to-date wages and other deductions
Included
What this estimate covers
- Federal income tax withholding
- Social Security and Medicare
- Current Idaho 5.3% percentage-computation table
- Form ID W-4 status and child-tax-credit allowances
- Whole-dollar additional withholding and valid exemption elections
Limitations
What is not included
- Nonresident-alien treaty calculations
- Military-spouse exemption eligibility advice
- Supplemental-wage flat-rate elections
- Unentered employer benefits and unsupported deduction treatments
How the Idaho estimate works
Enter gross pay for one pay period, federal W-4 adjustments, and the state details shown above. Federal withholding follows Publication 15-T. Idaho reduces current wages by the pay-period child-tax-credit allowance value for each Form ID W-4 allowance, subtracts the official threshold for the selected withholding status, applies 5.3%, and rounds the percentage-table result to the nearest whole dollar before adding the employee’s whole-dollar additional amount.
Example: Idaho’s official example uses $1,212 of biweekly wages, single-rate status, and four allowances. After subtracting $595.08 of allowance value, 5.3% of the amount over $577 rounds to $2 of Idaho withholding. The calculator does not assume any unentered benefit deduction or invent a tax result.
Weekly, biweekly, semimonthly, and monthly are the supported paycheck frequencies. “Annual salary” is an earnings input and the annual view is a simple period multiplication; neither is an annual payroll-period method. The special Form W-4 adjustment for nonresident aliens is not modeled.
Source trail
Official data used on this page
Each rule is versioned and reviewed before production use.
See every checksum and effective date on the tax data sources page.