When Are Estate Taxes Due? Key Deadlines After a Death

Grief has its own timeline. Federal tax law does not care about it.

When someone dies, a set of IRS deadlines begins running automatically — most of them tied to the date of death, not the date you finished sorting through paperwork. Miss one, and the IRS assesses a 5% per month late-filing penalty, capped at 25% of the tax owed, plus separate failure-to-pay penalties on top of that. For large estates, the dollar amounts get serious fast.

Here is the complete deadline picture for death-related taxes, and what actually triggers each obligation.

The Final Income Tax Return (Form 1040)

Due date: April 15 of the year following death (standard extension to October 15 available)

This is the last personal income tax return for the person who died. It covers all income from January 1 of the death year through the exact date of death — not a day more. Income earned by the estate after death goes on a different return entirely.

The return is signed by the executor or personal representative. If there is a surviving spouse, they can usually file jointly for the year of death, which often lowers the total tax bill. Write "Deceased" followed by the date of death next to the decedent's name at the top of the return.

A common mistake: thinking that because the person died in, say, March, the final return only covers three months of income. Wrong. It covers three months of wages, Social Security, retirement distributions, interest, dividends — everything earned during those three months. Gather all the W-2s, 1099s, and K-1s that were issued for that tax year, even if the person only lived part of it.

In Nevada, there is no state income tax return to file. The only income tax obligation is federal.

The Federal Estate Tax Return (Form 706)

Due date: 9 months after the date of death (6-month extension available, bringing the total to 15 months)

This is the most consequential deadline in estate administration — and it applies in two very different situations:

Situation 1: The estate owes federal estate tax. For 2026, the federal estate tax exemption is $15,000,000 per individual. Estates with a gross value above $15 million must file Form 706 and pay any tax owed by the 9-month deadline. Extensions extend the time to file but not the time to pay — any tax owed must be estimated and paid at the 9-month mark even if the return is extended.

Situation 2: No tax owed, but portability matters. This is where most people get tripped up. If the decedent was married and their estate is below $15 million, their unused exemption can be transferred to the surviving spouse — but only if the executor files Form 706 and makes a portability election within the 9-month deadline. Fail to file, and the unused exemption is permanently forfeited. The surviving spouse then faces the estate tax on their own, with only their $15 million exemption rather than up to $30 million combined.

For married couples in Nevada whose combined estate is between $15 million and $30 million, the portability filing is not optional — it is the difference between owing federal estate tax on the second death and owing nothing.

The 9-month clock starts the day the person dies. There is no grace period, and "I didn't know I needed to file" is not a recognized excuse.

The Fiduciary Income Tax Return (Form 1041)

Due date: April 15 following the estate's taxable year (5.5-month extension available)

Once someone dies, their estate becomes a separate taxable entity. If that estate generates $600 or more in gross income during the year — from rental income on property not yet sold, dividends from investment accounts in probate, interest in an estate bank account — the executor must file Form 1041.

Most estates need at least one Form 1041 filing. Even a modest estate sitting in probate for six months will usually collect some bank interest.

Estates are allowed to choose a fiscal year rather than a calendar year. This can be strategically valuable. If a person dies in October, the executor can elect a fiscal year ending the following September — deferring a full year of income recognition and tax. This election is made on the first Form 1041 filed.

The federal income tax brackets for estates are aggressively compressed. For 2026, the highest marginal rate of 37% kicks in when the estate's taxable income exceeds just $16,250. To avoid this, executors use the income distribution deduction: they distribute income out to beneficiaries, who then report it on their own tax returns at their personal rates.

Nevada estates owe no state fiduciary income tax. Federal only.

Property Tax: The Deadline That Sneaks Up

Property taxes on real estate continue to accrue whether the owner is alive or dead. In Nevada, real property taxes are paid in two installments:

• First installment: Due August 16 (covers October through March)
• Second installment: Due January 6 (covers April through September)

The estate, not the beneficiaries, owes any taxes that accrued up to the date of transfer. If an inherited property sits in an estate for several months while probate proceeds, property taxes continue to accumulate. An unpaid balance becomes a lien on the property — which complicates any subsequent transfer or sale.

Check with the Clark County or Washoe County Assessor's office (or the relevant county for other Nevada properties) to determine what is owed and request a payoff statement before closing an estate.

Medicaid Estate Recovery: The 30-Day Notice Window

This is not a tax, but it functions like a priority creditor claim and has its own hard deadline. If the person who died received Medicaid benefits at age 55 or older — nursing home care, home health services, prescription drug coverage — Nevada's Medicaid Estate Recovery Program (MERP) will file a claim against the estate.

When MERP sends a formal notice, heirs have exactly 30 days from the date the notice was mailed to request a hardship waiver. Miss that window and the state pursues full recovery automatically. There is no cure for a missed hardship waiver deadline.

Surviving spouses, minor children, and permanently disabled children are protected by law — MERP cannot collect while any of these protected individuals survive. But those protections must be asserted actively; they are not automatic.

A Complete Deadline Calendar

The Tax That Most Nevada Families Don't Owe But Still Have to Think About

Nevada has no state estate tax and no state inheritance tax. It repealed its state estate tax in 2005. For the vast majority of Nevada estates — the family home, retirement accounts, savings — there is simply no state tax obligation.

The federal picture is more nuanced. The $15 million exemption for 2026 means that estates under $15 million owe no federal estate tax. But even those estates may need to file Form 706 to protect portability for a surviving spouse. And all estates with even modest income owe a Form 1041. The deadlines are unforgiving and run simultaneously.

Getting these dates right is the baseline of competent estate administration. Getting them wrong costs money — sometimes a lot of it.

If you are working through a Nevada estate and want a complete checklist for federal and county-level filing requirements, deadlines, and the specific forms Nevada executors need to submit, the Nevada Final Tax & Estate Tax Guide walks through every step in sequence, from ordering death certificates through final distribution.

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