BOISE, Idaho — Feb. 20, 2026 — The Idaho State Tax Commission is providing an update on claiming the new conformity deductions on 2025 Idaho income tax returns. The Tax Commission has …

Jun 6, 2023 · ISTC informs taxpayers about their obligations so everyone can pay their fair share of taxes, & enforces Idaho’s laws to ensure the fairness of the tax system.

Feb 2, 2026 · The Idaho State Tax Commission can't guarantee the confidentiality of any information sent via the boxes above. We might review information submitted for quality assurance, or for …

Aug 21, 2025 · ISTC informs taxpayers about their obligations so everyone can pay their fair share of taxes, & enforces Idaho’s laws to ensure the fairness of the tax system.

Nov 14, 2025 · ISTC informs taxpayers about their obligations so everyone can pay their fair share of taxes, & enforces Idaho’s laws to ensure the fairness of the tax system.

Dec 29, 2025 · These tax software packages enable you to prepare and electronically file your federal and Idaho individual income tax forms for free if you meet certain criteria. Here are other tax software …

Jan 28, 2026 · All offices have a drop box for payments, returns, and correspondence. The boxes are available 8 a.m. to 5 p.m., Monday through Friday. Tax Commission offices are closed on all state …

Feb 17, 2026 · Update on filing 2025 Idaho income taxes now that conformity is law Tuesday February 17, 2026 BOISE, Idaho — Feb. 17, 2026 — Now that Governor Little has signed the conformity bill, …

Dec 17, 2025 · ISTC informs taxpayers about their obligations so everyone can pay their fair share of taxes, & enforces Idaho’s laws to ensure the fairness of the tax system.

Jul 12, 2023 · Temporary seller’s permit – Needed if you make infrequent retail sales in Idaho. Other tax permits – Application for a regular seller’s permit and withholding account. This page also has …