Idaho State Tax Commission

Compliance

• Avoid a Tax Debt
• Forgot To File?
• Your Tax Bills
• Making Payment Arrangements
• TAP Payment Plan Guide
• Forced Collection Action
• Liens
• If You're In Bankruptcy
• Form CFS Comprehensive Financial Statement (CFS) (08-23-2010)

Note: Calls from (855) 556-4230 are from our Phone Power unit.

Audit

• CP2000 (Federal Audit Adjustment)
• Audits - Your Rights & Responsibilities (11-13-2018)
• Tax Fraud

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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
• I missed my tax due date. Now What?