Idaho State Tax Commission

Idaho State Tax Commission

Penalty & Interest Estimator

Tax type: Income tax for a business (Forms 41, 41S, 65, or 66)

Step 1 of 5: Valid extension?

(See Form 51 for individuals' income tax or Form 41ES for businesses' income tax)

Step 2 of 5: Enter your tax due

…or STOP! and start over »

Last updated Nov. 23, 2012

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Idaho at 150

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