- Use Quick Pay to make a payment anytime (no account needed).
- See your Right to Appeal a Notice of Deficiency Determination (NODD).
Penalty and Interest
Penalty and interest are assessed according to current tax law.
- Interest Rates (table)
- Penalties and Interest (income tax)
- Penalty and Interest Estimator
- Income Tax: Idaho Code sections 63-3045 and 63-3046
- Sales Tax: Idaho Code section 63-3634