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Need an extension to file your Idaho income tax return?
April 6, 2026
BOISE, Idaho — April 6, 2026 — Can’t file your 2025 Idaho income tax return by the April 15 deadline? Pay enough of your total tax due by April 15, and you can get an automatic six-month extension. To qualify, you need to pay one of the following: 80% of the estimated tax you owe […]