If you received a Form 1099 for a deceased person, the income on it has to be split at the date of death: whatever the decedent received (or had a right to receive) before dying goes on their final Form 1040, and anything paid afterward belongs on the estate’s Form 1041 under the estate’s EIN. When the 1099 arrives under the decedent’s Social Security number but covers income on both sides of that line, you use a nominee reporting procedure to move the post-death portion over to the estate. That’s the whole framework. The rest is applying it to the specific 1099 in front of you.
Split the Income at the Date of Death
Most individuals file as cash-basis taxpayers, which means only income actually or constructively received before death belongs on the final Form 1040.1Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators Anything paid out after the date of death goes on the estate’s Form 1041, or on the beneficiary’s own return if the estate distributes the income through.
“Constructively received” is the phrase to watch. Income counts as received if it was credited to the decedent’s account, set apart, or otherwise made available before death, even if a check was never cashed.2eCFR. 26 CFR 1.451-2 – Constructive Receipt of Income A dividend declared and payable before death but deposited afterward still goes on the final return. If the decedent’s control over the money was subject to real restrictions, it wasn’t constructively received.
Interest often needs a daily split. A 1099-INT that covers the full calendar year, when the person died in July, gets allocated: interest earned through the date of death to the final Form 1040, the rest to the estate. Dividend record dates and payment dates matter for the same reason. Every 1099 the estate receives goes through this exercise.
When the 1099 Came Under the Decedent’s SSN
Banks and brokerages routinely issue a single 1099 under the decedent’s SSN for the whole year, even though part of the income belongs to the estate. Your first move is to contact the payer and ask for corrected forms: one under the decedent’s SSN for income through the date of death, and one under the estate’s EIN for income afterward.1Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators
Many payers won’t reissue, or they take months. In that case, use nominee reporting to reconcile the mismatch yourself.
Nominee Adjustment on the Final Form 1040
Report the full amount shown on the 1099 on Schedule B of the decedent’s final Form 1040. Then, below the subtotal of all interest or dividends, subtract the portion that belongs to the estate and label the line “Nominee Distribution.”1Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators This shows the IRS that the decedent’s return acknowledges the full 1099 amount while passing part of it through to the estate.
File a Nominee 1099 With the IRS
You also file a new 1099 (the same type as the original) listing yourself as payer and the estate as recipient under its EIN. Send it to the IRS with a Form 1096 transmittal.3Internal Revenue Service. General Instructions for Certain Information Returns The estate’s Form 1041 then picks up that same income. This paper trail keeps the IRS from flagging either the decedent or the estate for underreported income.
Get an EIN and Redirect Future 1099s
The estate is a separate taxpayer starting the day after death, and before it can file its own return or receive correctly issued 1099s it needs an Employer Identification Number. Apply online, by fax, or by mail; the online application is fastest and generates the EIN immediately.4Internal Revenue Service. File an Estate Tax Income Tax Return Once you have it, notify every bank, brokerage, and payer that had been sending 1099s to the decedent so future forms come out under the estate’s name and EIN.
If the estate’s gross income reaches $600 or more during the tax year, you must file Form 1041.5Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 Income the estate distributes to beneficiaries during the tax year is deductible by the estate and taxable to the beneficiaries instead. The estate reports each beneficiary’s share on Schedule K-1 (Form 1041), and the beneficiary picks it up on their own Form 1040.6Internal Revenue Service. About Form 1041, U.S. Income Tax Return for Estates and Trusts
On the paper final Form 1040, write “DECEASED,” the decedent’s name, and the date of death across the top.7Internal Revenue Service. Filing a Final Federal Tax Return for Someone Who Has Died When e-filing, follow the software’s instructions for the notation. A court-appointed representative signs the return; without one, whoever is in charge of the decedent’s property signs as “personal representative.” A representative may also file Form 56 to notify the IRS of the fiduciary relationship, which helps IRS correspondence reach the right person.8Internal Revenue Service. Instructions for Form 56
When the 1099 Represents Income in Respect of a Decedent
Some 1099 income falls into a specific category the IRS calls income in respect of a decedent, or IRD: the decedent earned it or had a right to it before death, but nobody received the money until after. Common examples are a final paycheck, accrued but unpaid interest, an IRA distribution triggered by death, and unpaid sales commissions.
IRD is not the same as ordinary estate income. Interest that accrues on a new estate bank account after the date of death is regular estate income. A bonus the decedent earned before dying that the employer pays to the estate afterward is IRD. The distinction matters because IRD can be subject to both federal estate tax (because the decedent had a right to it) and income tax (when the estate or beneficiary receives it).
To reduce that double hit, whoever includes IRD in gross income can claim an itemized deduction for the portion of federal estate tax attributable to that income.9Office of the Law Revision Counsel. 26 U.S. Code 691 – Recipients of Income in Respect of Decedents The calculation compares the estate tax actually paid against what it would have been without the IRD, then allocates that difference proportionally. For estates large enough to owe federal estate tax, the deduction can be substantial, and missing it is one of the more expensive mistakes an executor can make.
If the 1099 Is a 1099-B, Check the Cost Basis
When the decedent owned stocks, mutual funds, or other appreciated assets, the cost basis resets to fair market value at the date of death.10Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent This step-up means any gain during the decedent’s lifetime effectively vanishes for income tax purposes. If the executor or beneficiary later sells the asset, only the appreciation above the date-of-death value is taxable.
Brokerages don’t always adjust for the step-up automatically, especially on assets held for decades. A 1099-B often arrives showing the original purchase price. Compare the reported cost basis against the fair market value at death, and if they differ, report the corrected basis on Form 8949 and Schedule D.11Internal Revenue Service. Publication 551, Basis of Assets Failing to claim the step-up is one of the costliest overlooked benefits in estate administration.
One exception: if the decedent received the appreciated property as a gift within one year before death from someone who then inherits it back, the step-up doesn’t apply. The basis stays at what the decedent had.11Internal Revenue Service. Publication 551, Basis of Assets
Deadlines and Penalties
The final Form 1040 follows the normal individual filing deadline. For a decedent who used a calendar tax year, the return is due April 15 of the year after death.12Internal Revenue Service. When to File A decedent who died in 2025 has a final return due April 15, 2026. Extensions using Form 4868 add six months.
Form 1041 runs on its own schedule. A calendar-year estate files by April 15. A fiscal-year estate files by the 15th day of the fourth month after its fiscal year ends.4Internal Revenue Service. File an Estate Tax Income Tax Return
Missing either deadline triggers two separate penalties. The failure-to-file penalty runs 5% of unpaid tax per month, capped at 25%. The failure-to-pay penalty runs 0.5% per month, also capped at 25%. For returns due in 2026 that are more than 60 days late, the minimum failure-to-file penalty is $525 or 100% of the unpaid tax, whichever is less.13Internal Revenue Service. Failure to File Penalty Interest on unpaid tax compounds daily at the federal short-term rate plus three percentage points.14Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties, and Interest Charges File on time even if you can’t pay in full; that alone avoids the larger of the two penalties.
The practical sequence: get the EIN, notify payers so future 1099s come under the estate, collect every 1099, split each one at the date of death, run nominee adjustments where the SSN and EIN got mixed up, file the final Form 1040 and (if the $600 threshold is met) the estate’s Form 1041. Each 1099 in the stack goes through the same test. For anything beyond a very simple estate, the cost of a tax professional is usually recovered in a single correctly claimed step-up or IRD deduction.