Tax Deadlines After Death in Indiana: Executor's Timeline

Estate administration is unforgiving on timing. Miss the window to cancel a homestead deduction and you face a retroactive three-year penalty. Miss the creditor claim bar and debts you thought were extinguished revive. Fail to file Form 706 within nine months and the surviving spouse may lose a valuable portability election, although a qualifying estate may have late-election relief under Rev. Proc. 2022-32. None of these have a grace period for grieving.

Indiana executors are responsible for tracking deadlines across multiple agencies — the IRS, the Indiana Department of Revenue, the county auditor, the Indiana Family and Social Services Administration, and county probate court. This guide consolidates those deadlines into a single chronological reference.

All deadlines below run from the date of death unless otherwise specified.

Day 5: Vehicle Title Transfer (Small Estates)

If the estate's total value is $100,000 or less and the decedent owned a vehicle, heirs can transfer title using Indiana Form 18733 (Affidavit for Transfer of Certificate of Title for a Vehicle/Watercraft Without Administration) after only 5 days from the date of death — no probate required.

This is a narrow but useful window for families dealing with a vehicle that needs to be insured, driven, or sold quickly. The Form 18733 process requires no court involvement, but it does require the affidavit, a copy of the death certificate, and the title documentation the Bureau of Motor Vehicles (BMV) requires. The BMV handles the transfer directly.

This is separate from the small estate affidavit process (Day 45+), which covers other non-probate assets.

Day 45+: Small Estate Affidavit ($100,000 Threshold)

Under Indiana Code 29-1-8-1, an heir can use a small estate affidavit to collect assets from banks, financial institutions, and other holders without opening a formal probate estate — provided the estate's total value is $100,000 or less and at least 45 days have passed since the date of death.

The affidavit declares that the person presenting it is entitled to receive the described assets, that the estate falls below the threshold, and that all known debts have been or will be paid. The financial institution or asset holder is legally protected when they transfer assets to someone presenting a valid affidavit.

If the estate exceeds $100,000, the small-estate affidavit is unavailable and formal probate is generally required unless all assets pass outside probate. The 45-day waiting period is non-negotiable for the Small Estate Affidavit itself — the affidavit will be rejected if presented before 45 days have elapsed.

Day 60: Notify County Auditor When Homestead Deduction No Longer Applies

This deadline is missed frequently, and the consequences are significant.

Indiana's homestead deduction ($48,000 for 2025 pay 2026) reduces property taxes for owner-occupied primary residences. After the owner dies, determine whether the property still satisfies the statutory criteria. If it is vacated, sold, or rented, the deduction may no longer apply and Indiana law requires notification to the county auditor within 60 days. A surviving spouse generally retains the deduction only while satisfying the statutory criteria and not remarrying; confirm the treatment with the County Auditor.

Failure to notify triggers a retroactive three-year reassessment plus a 10% penalty surcharge on the back-taxes owed. For a home where the deduction was saving $1,500 per year, that's roughly $4,500 in back-taxes plus $450 in penalties — for missing one notification.

File with the county auditor's office where the property is located. If an heir intends to occupy the property, confirm with the County Auditor whether the existing deduction continues or whether a new homestead deduction application is required in the heir's own name.

Promptly: Report Death to INPRS; Allow a 30-Day Review

If the decedent was a retired Indiana public employee receiving pension benefits from the Indiana Public Retirement System (INPRS), report the death promptly. Call (844) 464-6777.

INPRS initiates a 30-day review period to determine survivor benefits, finalize any payment owed, and flag any overpayment that must be returned. If payments continue past the date of death and you fail to report promptly, INPRS will seek recovery — a complication that is far easier to avoid than to resolve.

After Probate Opens: Creditor Claim Window Closes

In a formal probate proceeding, the executor publishes a Notice of Administration in a local newspaper (typically once a week for two consecutive weeks). This starts the clock on the creditor claim window.

Indiana law gives general creditors three months from the date of first publication to file claims against the estate. A creditor who receives direct notice may have two months from the date of mailing. Claims filed after the applicable window are barred from collecting from the estate (with limited exceptions).

This is one of the most executor-protective provisions in Indiana probate law. Once the applicable claim windows have passed and you have addressed all timely-filed claims, distribution can be considered, but the absolute nine-month bar still matters. Publishing the Notice of Administration early therefore shortens the entire administration timeline.

There is also an absolute bar at 9 months from the date of death, discussed below — even estates that never publish notice are eventually protected.

April 15: Final Indiana IT-40 Due (Year Following Death)

The decedent's final Indiana individual income tax return (Form IT-40) covers income from January 1 through the date of death. It is due April 15 of the year following death.

Filing thresholds: under 65 with AGI over $1,000; age 65 or older with AGI over $2,000; nonresidents with any Indiana income. Even if below the threshold, file if Indiana tax was withheld — it's the only way to recover a refund. A valid federal extension generally gives Indiana the federal extended due date plus one month. If you do not have a federal extension, request an Indiana extension from DOR (Form IT-9). An extension does not extend payment; pay at least 90% of the expected tax by the original due date to avoid penalty.

IT-41 Due Date: 15th Day of 4th Month After Estate's Tax Year

The Indiana Fiduciary Income Tax Return (Form IT-41) is separate from the decedent's final IT-40. It covers income earned by the estate after the date of death — rent, interest, dividends, capital gains from asset sales, and any other income the estate collects.

IT-41 is required if the estate earns $600 or more in gross income during its taxable year. Indiana taxes this income at a flat 3.23%.

For a calendar-year estate, IT-41 is due April 15. For fiscal-year estates, the due date shifts accordingly (15th day of the 4th month after the close of the estate's tax year). If the estate stays open for two years, there are two IT-41 filings.

Complete federal Form 1041 first — Indiana IT-41 instructions require attaching a copy to the state return. The estate's EIN is required before filing either form.

9 Months: Form 706, Absolute Creditor Bar, and Medicaid Recovery Deadline

The ninth month after death is when several independent deadlines converge.

Three deadlines converge at the 9-month mark:

Form 706 — Federal Estate Tax Return (portability election). Generally required when the estate exceeds $15 million. But even for smaller estates, a surviving spouse may want to file Form 706 to elect portability — capturing the deceased spouse's unused federal exemption (DSUE). If Form 706 is not filed within 9 months, portability is at risk; an estate otherwise not required to file may qualify for the IRS's simplified late-election procedure under Rev. Proc. 2022-32, generally available until the fifth anniversary of death if its conditions are met. For estates with farmland, business interests, or investment portfolios, this election can prevent a significant future tax liability.

Absolute creditor bar. Indiana Code bars all creditor claims 9 months after the date of death, even if no Notice of Administration was ever published. This is the backstop that lets informally-administered estates eventually close.

Medicaid recovery (FSSA). Under 2026 Indiana SB 275, the FSSA has 9 months to file a claim for Medicaid benefits paid on the decedent's behalf. After 9 months, the claim is barred. A hardship waiver is available in limited circumstances.

Penalties for Missing Deadlines

Interest also accrues on any unpaid Indiana tax at the statutory rate, compounding the cost of late payments.

For a complete guide to Indiana tax obligations after a death — including both income tax returns, the property tax notification, small estate affidavits, and forms for each deadline — see the Indiana Final Tax & Estate Tax Guide at /us/indiana/estate-tax/.

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