What forms and documentation do I need to file my Idaho state taxes?

In order to file your Idaho state taxes, you will need certain forms and documentation. Individuals who are Idaho residents will generally need the Idaho Individual Income Tax Return (Form 40 or Form 43). Non-residents and part-year residents will need the Idaho Individual Income Tax Return (Form 39R). Additionally, you will need to include copies of your federal tax return (Form 1040) and any supporting schedules. If you have any income from other states, you may also need to file a Nonresident and Part-Year Resident Income Allocation Worksheet (Form 39NR). It is crucial to include all relevant W-2s, 1099s, and other income statements, as well as any applicable tax credits or deductions documentation. Remember to keep copies for your records and file the appropriate forms by the due date.