Idaho Tax Tables
Idaho Tax Tables provide a complete reference of how state income tax is calculated for each supported year. These tables summarise the official rules issued by the Idaho Department of Revenue and present them in a clear structure that matches the calculations used in our Idaho Tax Calculator. They are useful for checking withholdings, estimating liability, reviewing historical tax years and understanding how state policy shapes taxable income.
Quick Access Tools
Tax Years
Select a tax year to view the official Idaho tax rates and rules used in our calculators. Each page shows the brackets or flat tax rate, deduction amounts, credit structures, withholding guidance and any year-specific updates published by the Idaho Department of Revenue. You can also access the matching Idaho Tax Calculator for precise calculations for that year.
How Idaho Calculates Income Tax
Idaho uses a progressive tax system where income is divided into brackets and each portion is taxed at its marginal rate. These rules determine how wages and other taxable income are assessed for Idaho returns, with updated tables released each year to reflect legislation and inflation changes. For a broader explanation of how tax tables work, see our Tax Tables guide.
Certain jurisdictions within Idaho also levy local or county income taxes. These appear in the annual state tax tables and may affect residents, part-year residents or nonresidents depending on local rules.
Idaho supports resident, nonresident and part-year filing rules. The tax tables help clarify which thresholds apply when income is earned both inside and outside the state.
What Is Contained in the Idaho Tax Tables?
Each tax-year page provides a structured summary of the components Idaho uses to calculate individual income tax. While details vary by year, the state tax tables generally include the following elements:
- State tax brackets and marginal rates for each filing status.
- Standard deduction amounts for each filing status.
- Itemized deductions where permitted under Idaho law.
- Dependent and family-related credits including any child-based or filer-based reductions.
- State withholding tables used by employers for payroll calculations.
Together, these elements provide a transparent breakdown of how Idaho calculates tax for each year. This structure helps taxpayers review year-to-year changes, employers validate payroll withholding and financial planners analyse how Idaho’s rules differ from federal requirements. All values shown in our Idaho Tax Tables match the official figures published by the state.
Frequently Asked Questions
401(k) vs Roth 401(k) impact in Idaho?
Pre-tax 401(k) raises take-home now; Roth doesn’t. Compare with the 401(k) tool.
Can I estimate FICA for 2026 quickly?
Try the FICA Calculator then plug numbers back here.
Working remote for an Idaho employer out-of-state?
Nexus and work-location rules drive taxation—set work state correctly in the calculator.
Where is the Idaho state calculator?
Idaho State Tax Calculator (full controls for filing status, dependents, and credits).
Does Idaho have a child-dependent state credit?
Many states do—scan the Idaho Credits list in the results to confirm for 2026.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.