Idaho State Tax Commission

Idaho State Tax Commission

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2018 income tax forms are here! Individual and Business
(Note: Updates to individual income tax instructions on this page)
Did you receive a Form 1099-G from us? Read more.

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Refund Status

Check your 2018 tax return online, 24/7.

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W-4 HELP

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unexpected tax bill

Latest News

03-19-2019 You may owe use tax on internet, other untaxed purchases

03-15-2019 Changes In federal law mean Idaho taxpayers are receiving smaller refunds

03-15-2019 Business Basics class offered in Ketchum March 19

03-14-2019 Idahoans who commit tax fraud are prosecuted

03-14-2019 Draft forms for sales and use tax: We want your feedback!

Read more news items »

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This information is for general guidance only. Tax laws are complex and change regularly. We can't cover every circumstance in our guides. This guidance may not apply to your situation. Please contact us with any questions. We work to provide current and accurate information. But some information could have technical inaccuracies or typographical errors. If there's a conflict between current tax law and this information, current tax law will govern.