Tax Deadlines After Death in Pennsylvania: Every Date You Cannot Miss
When someone dies in Pennsylvania, multiple tax obligations activate simultaneously — and they run on different clocks. The executor is personally responsible for tracking every deadline. Missing the 90-day prepayment window costs the estate a 5% discount on the inheritance tax. Missing the 9-month filing deadline triggers penalties and daily interest. Missing the annual income tax deadlines means penalties for both the decedent's final return and the estate's fiduciary return. This is the complete timeline.
The Four Taxes That Apply After a Death in Pennsylvania
1. Pennsylvania Inheritance Tax (REV-1500) The inheritance tax is the most immediate concern. Pennsylvania levies this tax on the transfer of assets from the decedent to beneficiaries, calculated based on the relationship between the deceased and each recipient:
- Surviving spouse, children 21 and under: 0%
- Lineal descendants and ancestors (children over 21, grandchildren, parents): 4.5%
- Siblings: 12%
- All other heirs: 15%
There is no minimum estate value that triggers a threshold exemption. If a non-exempt beneficiary inherits anything, inheritance tax is owed.
2. Decedent's Final Pennsylvania Income Tax Return (PA-40) The executor must file the decedent's final state income tax return covering January 1 of the year of death through the date of death. A surviving spouse may file jointly for the full calendar year, but the decedent's income is only reported through the date of death.
3. Pennsylvania Fiduciary Income Tax Return (PA-41) Once an estate is opened, it becomes a separate taxable entity. If the estate generates $33 or more in Pennsylvania-taxable income — interest, dividends, rental income — during any tax year, the executor must file a PA-41 Fiduciary Income Tax Return. The $33 threshold is extremely low; almost any estate with an open bank account will hit it.
4. Federal Estate Tax (Form 706) — if applicable For estates exceeding $15 million in 2026, a federal estate tax return is also required. Most Pennsylvania estates are well below this threshold. However, even below-threshold estates may need to file Form 706 to elect portability of the Deceased Spousal Unused Exclusion (DSUE) for the surviving spouse. See the section below on when 706 matters even without a tax liability.
The Critical Deadline Timeline
Day 0: Date of Death
The inheritance tax clock starts. All subsequent deadlines are calculated from this date.
Month 1–2: Immediate tasks
Secure the death certificate (order 8–10 certified copies), access or inventory the safe deposit box through the REV-1845 procedure, petition the county Register of Wills for letters, and begin marshaling estate assets.
Month 3 (90 Days): Inheritance Tax Discount Deadline
Pennsylvania offers a 5% discount on the inheritance tax if it is paid within three calendar months of the date of death. This is not a grace period — it is a genuine discount that reduces the tax owed.
For a $400,000 estate with $200,000 passing to a lineal beneficiary at 4.5%, the full inheritance tax would be $9,000. Paying within 90 days reduces the bill to $8,550 — a $450 savings. Larger estates see proportionally larger savings.
The challenge: most executors cannot complete the full REV-1500 within 90 days. The estate inventory is not complete, real estate appraisals are not done, and financial accounts have not been fully transferred. The solution is an estimated prepayment. The executor calculates a reasonable estimate of the tax owed, pays that amount to the county Register of Wills before day 90, and then files the formal REV-1500 later (by month 9) with any true-up. The discount applies to whatever was paid before day 90.
To make the estimated prepayment as accurate as possible, prioritize getting the real estate appraisal and liquid asset inventories done within the first two months.
Month 9 (Nine Months): REV-1500 Filing and Full Tax Payment Deadline
The completed Pennsylvania Inheritance Tax Return (REV-1500) and any remaining balance of the inheritance tax are due nine months from the date of death. After this date, the unpaid tax begins accruing interest at a rate set annually by the Secretary of Revenue, and a penalty of up to 25% of the unpaid tax (or $1,000, whichever is less) may be assessed.
This nine-month deadline is hard. If the estate needs more time to file the paperwork (not pay the tax — just file the return), a six-month extension is available.
How to Get a 6-Month Extension: Form REV-1846
If the executor cannot complete the REV-1500 by the nine-month deadline, they may request a one-time, six-month extension to file by submitting Form REV-1846 (Request for Extension of Time to File Pennsylvania Inheritance Tax Return).
This extension extends only the filing deadline — not the payment deadline. The tax must still be paid by the nine-month mark. Filing REV-1846 does not postpone interest or penalties on unpaid tax balances.
To avoid penalties: pay your best estimate of the tax by month nine, file REV-1846 to extend the return filing deadline to month fifteen, and file the final return with any true-up adjustment by month fifteen.
April 15 (Year Following Death): Final PA-40 and PA-41 Due
The decedent's final Pennsylvania income tax return (PA-40) is due April 15 of the year following the date of death. For a decedent who died in any month of 2026, the final PA-40 is due April 15, 2027.
The estate's fiduciary income tax return (PA-41) uses the same annual calendar deadline if the estate is on a calendar year — April 15. Estates may elect a fiscal year, which changes the filing date to 105 days after the close of the fiscal year.
Federal Deadlines
IRS Form 706 (if the estate exceeds $15 million, or if you are electing DSUE portability) is due nine months from the date of death, with an available six-month extension (IRS Form 4768).
Federal Form 1041 (fiduciary income tax) and the decedent's final Form 1040 follow standard federal income tax deadlines.
Complete Deadline Summary
| Deadline | What It Covers | Form |
|---|---|---|
| Day 90 | Inheritance tax 5% discount window closes | Estimated prepayment to Register of Wills |
| Month 9 | Inheritance tax full payment due | REV-1500 |
| Month 9 | File REV-1846 if extension needed | REV-1846 |
| Month 15 | REV-1500 due if extension was filed | REV-1500 (extended) |
| April 15 | Decedent's final PA income tax return | PA-40 |
| April 15 | Estate's fiduciary income tax return (if applicable) | PA-41 |
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The Personal Liability Risk
Pennsylvania law holds the executor personally liable for inheritance tax that was not paid before estate assets were distributed. If an executor distributes the estate's liquid assets to beneficiaries at month six, then realizes at month nine that the inheritance tax bill exceeds what remains in the estate, the executor pays the difference from their own funds.
The solution is simple but requires discipline: pay the tax before distributing anything, and do not distribute the final amounts until the Department of Revenue issues a written tax clearance.
The Pennsylvania Final Tax & Estate Tax Guide includes a deadline calendar template that maps all four tax deadlines to the decedent's specific date of death — with checkboxes for each prepayment, filing, and clearance step — so nothing is missed during an already difficult time.
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