When a person dies, the income does not stop. Dividends keep paying. Rent keeps coming in. The brokerage account keeps throwing off interest. The final Form 1040 covers income through the date of death. After that, the income belongs to a new taxpayer: the estate.
The estate reports that income on Form 1041, U.S. Income Tax Return for Estates and Trusts. Executors who have never seen one tend to ignore it, assume the CPA will handle it next spring, or confuse it with the estate tax return. Those are three different ways to end up with IRS notices addressed to an entity nobody is watching.
Form 1041 is not Form 706
Let's clear this up first. Form 706 is the estate tax return. It taxes the transfer of wealth at death, and in 2026 it only applies to estates over the $15,000,000 basic exclusion amount (or estates filing to elect portability). Most estates never file one.
Form 1041 is an income tax return. It reports income the estate earns after death. Plenty of modest estates have to file it. The guide to Florida estates and the federal estate tax covers the 706 side. This page is about the 1041.
Who must file
IRC 6012(a)(3) requires a return from every estate with gross income of $600 or more for the taxable year. That threshold has not been indexed for inflation in decades, so it is easy to hit. A $200,000 brokerage account earning 4 percent produces $8,000 a year. A rental condo on Longboat Key crosses $600 in its first month.
Two details trip people up. First, it is gross income, not taxable income. Gross rent counts before expenses. Second, a separate rule applies when any beneficiary is a nonresident alien: the estate must file regardless of the amount.
The executor signs and files the return. If no executor is appointed, the person in possession of the estate's property has that duty.
Get the estate its own number
An estate cannot use the decedent's Social Security number. It needs an employer identification number, obtained online from the IRS or on Form SS-4. Give that EIN to the banks and brokerage firms that hold estate assets so the 1099s come out in the estate's name after the date of death.
If you do not, the payers will keep reporting income under the decedent's SSN, and the IRS will eventually ask why a dead person's income was not reported. That is how a CP2000 lands on a closed file.
File Form 56 for the estate's EIN as well, so the IRS knows who to write to.
Choosing a tax year
An estate gets a choice most taxpayers do not. It can use a calendar year or a fiscal year ending on the last day of any month, with the first year running no more than twelve months from death. Trusts are generally stuck with the calendar year under IRC 644, which is one reason the section 645 election can be useful.
A fiscal year can defer income for beneficiaries and line up the estate's year with its actual administration timeline. If Mom died in March, a fiscal year ending in February captures nearly a full year of estate activity in one return. Choose deliberately. The choice is made by filing the first return and is not easy to change.
The brackets are brutal
Estates and trusts reach the top income tax rate fast. Under Rev. Proc. 2025-32, for 2026 the 37 percent bracket starts at taxable income over $16,000. An individual does not hit 37 percent until income is many times that.
That compression is why distributions matter. Income the estate keeps is taxed at estate rates. Income the estate distributes to beneficiaries is generally carried out to them through the distribution deduction and taxed at their rates.
Distributions, DNI and the K-1
The mechanism is distributable net income, or DNI, defined in IRC 643(a). When the estate distributes money to beneficiaries, it deducts the distribution up to DNI under IRC 661, and the beneficiaries include the corresponding income under IRC 662. Each beneficiary receives a Schedule K-1 (Form 1041) showing their share.
The K-1 is where executors create problems for the people they are trying to help. Late K-1s delay beneficiaries' own returns. K-1s that do not match the 1041 generate IRS mismatch notices. The guide to beneficiary K-1 problems covers what happens when those numbers do not line up.
The 65-day rule
IRC 663(b) gives executors a useful timing tool. The executor can elect to treat distributions made within the first 65 days of a tax year as if they were made on the last day of the prior year. That lets you look at the year's actual income after it closes, then distribute enough in early spring to carry the income out at beneficiary rates.
The election is made on the return and is irrevocable for that year. Use it on purpose, with numbers, not by accident.
Deductions the estate gets
An estate gets a $600 exemption under IRC 642(b). It can deduct administration expenses, such as attorney and executor fees and accounting costs, though it cannot deduct the same expense on both the 1041 and the Form 706 under IRC 642(g). For a non-taxable estate, the 1041 is usually the place to take them.
In the estate's final year, unused losses and certain excess deductions pass out to the beneficiaries under IRC 642(h). Executors who skip that step leave tax benefits on the table that belonged to the heirs.
Deadlines and estimated tax
Form 1041 is due on the 15th day of the fourth month after the close of the estate's tax year under IRC 6072(a). For a calendar year estate, that is April 15. An automatic five-and-a-half month extension is available on Form 7004.
Estimated tax gets a break at the start. IRC 6654(l)(2) exempts an estate from estimated tax payments for any taxable year ending before the date two years after the decedent's death. Estates that stay open longer than that need to start making quarterly payments, and a surprising number forget.
How long the estate stays open
An estate is a taxpayer only while it is actually being administered. Treas. Reg. 1.641(b)-3(a) treats the period of administration as the time actually required to collect assets, pay debts and distribute. If an executor keeps an estate open long after that work is done, the IRS can treat the estate as terminated for tax purposes and tax the income directly to the beneficiaries.
That is rarely a problem in Sarasota County, where most estates move reasonably quickly. It becomes one when an estate is kept open for years to hold a rental property or a family business. If that is the plan, a trust may be the better vehicle.
Where IRS problems come from
- No EIN, so post-death income gets reported under the decedent's SSN.
- Income crossing $600 and nobody filing.
- Income reported both on the final 1040 and on the 1041, or on neither.
- K-1s that do not tie to the return, or are never issued.
- Missed estimated payments once the estate passes two years.
- Distributing everything before the 1041 tax is paid, which exposes the executor under the federal priority statute.
Once the estate's returns are filed, the executor can shorten the IRS's assessment window on them with a prompt assessment request. That works for the estate's 1041s as well as the decedent's 1040s.
Florida helps in one respect: there is no state income tax return for the estate. Everything here is federal. That makes it simpler, not optional.
If the estate has been earning income and nobody has filed, call (813) 229-7100. Let's talk.
Frequently asked questions
Does every estate have to file Form 1041?
No. Under IRC 6012(a)(3), a domestic estate must file if its gross income for the year is $600 or more. An estate with only a small bank account that earns a few dollars of interest may never cross that line. Count gross income, not net.
Can an estate use a fiscal year?
Yes. Unlike most trusts, an estate can choose a fiscal year ending on the last day of any month, as long as the first year does not exceed twelve months. The choice is made by filing the first Form 1041 on that basis.
Does an estate have to make estimated tax payments?
Not at first. IRC 6654(l)(2) exempts an estate from estimated tax for any taxable year ending before the date two years after the decedent’s death. After that, the estate is subject to estimated tax like other taxpayers.
What is the 65-day rule?
IRC 663(b) lets the executor elect to treat distributions made within the first 65 days of a tax year as if they were made on the last day of the prior year. It is a planning tool to shift income to beneficiaries, who are often in lower brackets than the estate.