File your return and pay any tax on or before the 15th day of the fourth month following the close of your tax year.
- For a calendar year filer, this is April 15.
- If the last day for filing a return falls on a Saturday, Sunday, or legal holiday, the return is on time if you file it on the next business day.
Please contact us if you forgot to file a tax return.
Form ID K-1
Use Form ID K-1 to provide the partner, shareholder, or beneficiary of a pass-through entity with information required to complete the pass-through owner’s Idaho income tax return.
Idaho NOL: 5 most common mistakes
This video applies to NOLs through tax year 2018.