Executor's Final Tax Obligations: Form 1040, Form 1041, and Estate Tax

The Three Tax Returns: Overview

| ContentWho Files ItContentWhat It CoversContent2026 DeadlineContentRequired?** | | --- | --- | --- | --- | --- | | Form 1040 — Final Personal Return | Executor (signs as 'Personal Representative') OR surviving spouse (joint return) | All income the deceased earned from January 1 to the date of death in the year of death — wages, investment income, retirement distributions, business income, etc. | April 15 of the year following death (6-month extension available via Form 4868) | YES — always required if deceased had reportable income | | Form 1041 — Estate Income Tax Return | Executor, signing as 'Fiduciary' | Income earned BY THE ESTATE after the date of death: interest, dividends, rental income from estate property, capital gains from asset sales during administration | April 15 of the year following the estate's tax year end (fiscal or calendar); 5.5-month extension available via Form 7004 | Required in any year the estate has gross income of $600 or more, OR any taxable income, OR a non-resident alien beneficiary | | Form 706 — Federal Estate Tax Return | Executor | Total gross estate value, deductions, and estate tax owed (if any). Also used for portability election between spouses. | 9 months from date of death; 6-month extension available via Form 4768 | Required only if gross estate exceeds $15,000,000 (2026 threshold — PL 119-21); always file for portability election even if below threshold when spouse is surviving |

Form 1040: The Deceased's Final Personal Return

Filing Status Options

The filing status on the deceased's final 1040 depends on marital status and timing:

| ContentFiling StatusContentNotes** | | --- | --- | --- | | Deceased was single at death | Single | Standard filing; executor signs as 'Personal Representative' | | Deceased was married and spouse is filing a joint return | Married Filing Jointly | Surviving spouse can file jointly for the year of death; often lower taxes; surviving spouse signs normally; executor also signs if there is one | | Deceased was married but spouse is filing separately | Married Filing Separately | Less common; may apply in specific estate planning or liability situations | | Surviving spouse in subsequent years (with dependent child) | Qualifying Surviving Spouse (Years 2–3 after death) | Allows use of joint return rates for two years after death if qualifying child is present |

What Income Is Included

The final Form 1040 covers all income from January 1 of the year of death through the date of death. This includes:

• Wages, salary, or self-employment income earned before death (even if paycheck arrived after death)
• Interest and dividends accrued before death
• Capital gains on sales completed before death
• Required Minimum Distributions (RMDs) from IRAs/401(k)s that were due but not taken before death
• Social Security income received in the year of death (note: the month-of-death benefit must be returned to SSA — see IP-3)

Income in Respect of a Decedent (IRD)

Some income that the deceased earned but had not yet received at death — such as deferred compensation, IRA distributions not yet taken, or installment sale payments — is called Income in Respect of a Decedent (IRD). IRD is NOT included on the final Form 1040; instead, it is taxable when received by the estate or beneficiary. IRD retains its character (ordinary income, capital gain, etc.) and is reported on the estate's Form 1041 or on the beneficiary's personal return. IRD can also generate a deduction for any estate taxes attributable to the IRD — consult a CPA for this complex calculation.

Form 1041: Estate Income Tax Return

When Is Form 1041 Required

The estate becomes a separate taxpayer on the date of death. Any income earned by the estate's assets after death belongs to the estate, not the deceased. The estate must file Form 1041 in any year it has:

• Gross income of $600 or more (interest on estate bank account, dividends from estate investment accounts, rental income from estate property)
• Any taxable income, regardless of amount
• A non-resident alien as a beneficiary

Common Sources of Estate Income

Executors are often surprised that a 'simple' estate still generates enough income for a 1041 obligation. Common sources include:

| ContentHow It ArisesContentReporting** | | --- | --- | --- | | Interest income | Estate bank account earns interest; estate bonds generate interest | Report on Schedule B of Form 1041 | | Dividend income | Estate holds investment accounts with dividend-paying securities | Report on Schedule B of Form 1041 | | Rental income | Estate property is rented during administration (see EP-3) | Report on Schedule E of Form 1041 | | Capital gains | Executor sells estate property (home, investments) after death | Capital gain = sale price minus stepped-up basis at death; reported on Schedule D | | Business income | Estate includes an operating business that continues during administration | Report on Schedule C of Form 1041 | | IRA/401(k) distributions | Estate is named beneficiary of retirement account (rare but occurs when no individual beneficiary was named) | Fully taxable as ordinary income; usually a significant tax disadvantage vs. individual beneficiary |

The Estate's Tax Year

Unlike individual taxpayers who use the calendar year, an estate can choose a fiscal year that ends in any month. The executor chooses the estate's tax year on the first Form 1041 filed. A fiscal year can be strategically chosen to defer income recognition — consult a CPA to optimize this election.

Form 706: Federal Estate Tax Return

The 2026 Threshold: $15,000,000

Under the One Big Beautiful Bill Act (PL 119-21), signed July 4, 2025, the federal estate tax exemption increased to $15,000,000 per individual for 2026. For married couples, the combined exemption is $30,000,000 with proper portability election. The vast majority of estates do not owe federal estate tax.

File Form 706 Even If No Tax Is Owed — Portability

If the deceased was married, the executor should strongly consider filing Form 706 even if the estate is well below the $15M threshold. Filing preserves the deceased's unused exemption amount, which transfers to the surviving spouse — called 'portability.' A surviving spouse with portability of a deceased spouse's unused exemption can pass up to $30M without estate tax. The portability election is made by filing Form 706 by the deadline (9 months from death, or extended by 6 months with Form 4768). Under Rev. Proc. 2022-32, a late portability election can be made up to 5 years after death for estates that were not required to file. Failing to make the portability election when the surviving spouse has significant assets can cost hundreds of thousands of dollars in unnecessary estate tax.

| ContentFederal Estate Tax?ContentForm 706 Required?ContentRecommended Action** | | --- | --- | --- | --- | | Under $15M — single person | None | No — unless portability desired | File if married; skip if not married and estate is simple | | Under $30M — married couple | None — with portability election | No for first death (but file for portability) | File Form 706 for deceased spouse to preserve portability for survivor | | Over $15M — single; Over $30M — married | Estate tax owed | YES — mandatory | File Form 706 with full estate tax computation; consult estate tax attorney |

State Estate and Inheritance Taxes

Federal estate tax affects very few estates given the $15M threshold — but 17 states and DC impose their own estate or inheritance taxes with much lower thresholds. An estate that owes no federal estate tax may still owe significant state tax.

| ContentTax TypeContentThreshold (approximate 2025–2026)** | | --- | --- | --- | | Massachusetts | Estate tax | $2,000,000 per person (note: MA passed a $3M exclusion in 2023 that applies; consult current MA law) | | Oregon | Estate tax | $1,000,000 per person — one of the lowest thresholds in the US | | Washington State | Estate tax | $2,193,000 per person (2026 adjusted for inflation) | | Minnesota | Estate tax | $3,000,000 per person | | Illinois | Estate tax | $4,000,000 per person | | New York | Estate tax | $7,280,000 per person (2026 estimate) — with notorious 'cliff effect' at 105% of threshold | | Pennsylvania | Inheritance tax | No exemption; rates: 0% spouse; 4.5% direct descendants; 12% siblings; 15% others | | New Jersey | Inheritance tax | Rates vary by relationship; 0% for Class A (spouse, parents, children); up to 16% for others | | Iowa | Inheritance tax being phased out | Iowa is phasing out its inheritance tax; consult current IA law for status | | Kentucky | Inheritance tax | 0% Class A (spouse, parents, children, grandchildren); 4–16% others |