How Do I File Taxes for a Deceased Person in Idaho?
Find out which tax returns you need to file after someone dies. See state-specific forms, deadlines, and whether tax clearance is required.
Frequently Asked Questions
At minimum, a final federal income tax return (Form 1040) and a final Idaho income tax return (Form 40) must be filed for income earned through the date of death.Idaho Code § 63-3001 et seq.; Idaho Code § 63-3024; Idaho Code § 63-3082Verified Jul 13, 2026 If the estate earns income during administration, a federal fiduciary return (Form 1041) and Idaho fiduciary return (Form 66) may also be required.
The final federal and Idaho income tax returns are due april 15 following year of death.Idaho Code § 63-3001 et seq.; Idaho Code § 63-3024; Idaho Code § 63-3082Verified Jul 13, 2026 The fiduciary return is due april 15 (calendar year); follows federal extension rules.
No. No tax clearance required. Idaho has no estate, inheritance, or gift tax. The estate tax applied only to deaths before January 1, 2005, and the entire chapter was repealed in 2020.Idaho Code § 63-3001 et seq.; Idaho Code § 63-3024; Idaho Code § 63-3082Verified Jul 13, 2026 All tax obligations must be satisfied before making final distributions.
Yes. Estate size does not affect the requirement to file a final income tax return. A final Form 1040 is required regardless of estate value if the deceased had income. What smaller estates typically avoid is the federal estate tax return (Form 706).
The executor named in the will (or the court-appointed administrator) is responsible for filing the final income tax return and any estate tax returns. If the deceased was married, the surviving spouse can file a joint federal return for the year of death. For trust assets, the successor trustee handles fiduciary tax returns. The Idaho estate settlement plan covers all filing responsibilities in order.
No. Idaho does not impose a state estate tax or inheritance tax. The primary tax filings after death are income tax related (final return and, if applicable, estate income tax return). See how Idaho compares with the death tax calculator.
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Prepare the affidavit that collects a small estate's property without probate — the official state form or an affidavit drafted to statute, plus a presentation letter for each holder.
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Prepare the paperwork that closes the estate — the state's closing statement, petition for discharge, or final account, with the state's closing instructions and the optional federal forms.
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