Idaho State Tax Commission

Idaho State Tax Commission

Due Dates

To avoid costly interest and penalties, you must file your taxes on time. Missing a filing deadline can also delay or cause you to lose a refund that may be owed to you.

Visit the following pages or our calendar page to learn more about filing requirements and due dates:

Sales tax, income tax withholding, and other tax forms generated for permit accounts are not available on our website. This includes Forms 850, 852, 910, 967, 1150, 1250, and 3850. We can only mail these forms to the address provided by the account owner (or designated Power of Attorney) because of the confidential information they contain. Contact us if you need a replacement sent, or file online.

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