Idaho Auto Loan Calculator
Estimate your monthly car payments in Idaho. Include Idaho sales tax on vehicles and registration fees in your calculation.
Why calculating finance in Idaho is different
Idaho uses a flat income tax and moderate sales tax rates.
State Income Tax
5.8%
Base Sales Tax
6%
State Min Wage
$7.25 / hr
Abbreviation
ID
Idaho Finance Interactive Tool
This calculator uses the latest 2026 data for Idaho, including the minimum wage of $7.25 and the specific state income tax rates (5.8%).
Frequently Asked Questions about Idaho Finance
How is sales tax calculated on cars in Idaho?
When buying a car in Idaho, you must pay the 6% state sales tax plus any local taxes. In many states, this is calculated on the purchase price minus the value of your trade-in.
What are the average auto registration fees in Idaho?
Vehicle registration fees in Idaho vary by vehicle weight, age, and value. These fees are collected annually by the state DMV or equivalent agency.