Updated October 18, 2026. Quick answer: Form 1041-T lets a trust, or a decedent’s estate in its final year, treat part of its estimated tax payments as paid by a beneficiary. The one amount you enter comes from the estimated payments the trust or estate actually made, and it is split among beneficiaries on the form. The fiduciary files it by the 65th day after the close of the tax year.
What Form 1041-T does
The form is titled “Allocation of Estimated Tax Payments to Beneficiaries”. The instructions state its purpose: “A trust or, for its final tax year, a decedent’s estate may elect under section 643(g) to have any part of its estimated tax payments (but not income tax withheld) treated as made by a beneficiary or beneficiaries.” “The fiduciary files Form 1041-T to make the election.” The Form 1041 instructions put it the same way for trusts: “Fiduciaries of trusts that pay estimated tax may elect under section 643(g) to have any portion of their estimated tax payments allocated to any of the beneficiaries.” The line by line entries are covered on the lines 1 to 4 page.
Who may elect, and that it is irrevocable
For an estate the choice is limited to one year: “The fiduciary of a decedent’s estate may make a section 643(g) election only for the final year of the estate.” On permanence the form says “Once made, the election is irrevocable.” That is a reason to settle the beneficiary amounts before signing. The estate side of the return is explained on the Form 1041 for estates page.
How to file it
“Attach Form 1041-T to Form 1041, U.S. Income Tax Return for Estates and Trusts, only if you are making the election with Form 1041.” “Otherwise, file Form 1041-T separately.” Attaching it does not move the date: “Filing Form 1041-T with Form 1041 doesn’t change the due date for filing Form 1041-T.” If the form was already filed, the Form 1041 instructions say “If you have already filed Form 1041-T, don’t attach a copy to your return.” When the form is filed on its own, the fiduciary’s name, title, telephone number and address go in the block at the top of the form.
When to file
“For the election to be valid, a trust or decedent’s estate must file Form 1041-T by the 65th day after the close of the tax year as shown at the top of the form.” “If the due date falls on a Saturday, Sunday, or legal holiday, file on the next business day.” For the tax year covered: “File the 2025 form for calendar year 2025 and fiscal years beginning in 2025 and ending in 2026.” The Form 1041 instructions warn “Failure to make a timely election will result in the estimated tax payments not being transferred to the beneficiary(ies) even if you entered the amount on Schedule K-1.” This deadline is separate from the return’s own date, which is explained on the Form 1041 due date and extension page.
Where to file
The form has a “Where To File” chart that lists mailing addresses by groups of states, with a separate row for filers outside the states. Find your state in the chart on the form you are filing and use the address shown beside it. This page does not copy the chart, because the addresses are tied to the form revision you hold.
What to enter and where it comes from
The form has one dollar entry on line 1, and the instructions describe it: “Enter the amount of estimated tax payments made by the trust or decedent’s estate that the fiduciary elects to treat as a payment made by the beneficiaries.” It comes from the estimated tax payments the trust or estate made during the year. The instructions add that withheld tax is not part of this election: “You can’t allocate to a beneficiary tax withheld from income”. The amount is then divided among beneficiaries on lines 2 to 4, which are covered on the lines 1 to 4 page.
Where it goes next
Line 1 says to enter the total “on Form 1041, Schedule G, Part II,” and the instructions also say “Be sure to include it on Form 1041, Schedule B, line 10.” The treatment is described this way: “This amount is treated as if paid or credited to the beneficiaries on the last day of the tax year of the trust or decedent’s estate.” Each beneficiary’s share is then reported on Schedule K-1: “This amount is reported in box 13, code A, of the beneficiary’s Schedule K-1”. See the Schedule K-1 box 13 code A page, the Schedule G Part II page and the Schedule B line 10 page.
Edition and line numbers
This page reads the Form 1041-T for 2025 and the Instructions for Form 1041 for 2025. They are the current files irs.gov served on 2026-10-18. The form is marked “Form 1041-T (2025)” and the Form 1041 instructions are marked “Instructions for Form 1041 (2025)”. The Form 1041-ES package for 2026 refers to the next year’s form: “The fiduciary must make the election on the 2026 Form 1041-T”. Check the revision date printed on your own Form 1041-T and use that revision’s line numbers, because a different year’s form can word or number its lines differently.
Common mistakes
- Filing late. The form must be filed “by the 65th day after the close of the tax year as shown at the top of the form.” Attaching it to Form 1041 does not extend that date.
- Attaching a second copy to Form 1041. The instructions say “If you have already filed Form 1041-T, don’t attach a copy to your return.”
- Including tax withheld from income. The instructions say “You can’t allocate to a beneficiary tax withheld from income”.
Related: Form 1041-T lines 1 to 4, Schedule K-1 box 13 code A, Form 1041 for estates, Form 1041 Schedule G Part II, and Form 1041 due date and extension.
Sources
- Form 1041-T, Allocation of Estimated Tax Payments to Beneficiaries (2025): https://www.irs.gov/pub/irs-pdf/f1041t.pdf
- Instructions for Form 1041 and Schedules A, B, G, J, and K-1 (2025): https://www.irs.gov/pub/irs-pdf/i1041.pdf
- Form 1041-ES, Estimated Income Tax for Estates and Trusts (2026): https://www.irs.gov/pub/irs-pdf/f1041es.pdf
Read from the IRS documents linked above on October 18, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer, the account provider or the IRS is the right place to confirm anything consequential.