The Form 5227 due date for a calendar-year split-interest trust is April 15. For the 2025 tax year, that falls on Wednesday, April 15, 2026, with no weekend or holiday shift.1Internal Revenue Service. When to File Trustees who need more time can file Form 8868 by that same date to get an automatic six-month extension, moving the deadline to October 15.2Internal Revenue Service. Instructions for Form 8868 (Rev. January 2026)
Fiscal-Year Trusts and Terminated Trusts
The return is due on the 15th day of the fourth month after the close of the trust’s tax year. Most split-interest trusts use a calendar year, which is why April 15 is the standard date.3Internal Revenue Service. Return Due Dates: Other Returns and Reports Filed by Exempt Organizations If a trust terminates mid-year, the return is due by the 15th day of the fourth month after termination. When the deadline would otherwise fall on a Saturday, Sunday, or legal holiday, it shifts to the next business day.
How to Get an Extension
To extend the filing deadline, submit Form 8868, Application for Automatic Extension of Time to File an Exempt Organization Return, on or before the original due date. The extension is automatic once the form is properly completed and submitted; no explanation is required. For a calendar-year trust, this pushes the deadline from April 15 to October 15.2Internal Revenue Service. Instructions for Form 8868 (Rev. January 2026)
The extension covers the return only. If the trust owes any Chapter 42 excise tax, that payment is still due by the original April 15 deadline. Missing that payment triggers interest and failure-to-pay penalties even when the filing extension is valid.2Internal Revenue Service. Instructions for Form 8868 (Rev. January 2026)
Use the right form. Form 7004 is the extension form for business income tax returns and does not apply to Form 5227. Filing the wrong extension form will not protect the trust from late-filing penalties.3Internal Revenue Service. Return Due Dates: Other Returns and Reports Filed by Exempt Organizations
Electronic Filing Requirement
Under regulations finalized in February 2023, any trust required to file 10 or more returns in the aggregate during a calendar year must file Form 5227 electronically. The 10-return count is not limited to Form 5227; it includes almost all information return types the trust files, such as 1099s and W-2s.4Internal Revenue Service. Topic No. 801, Who Must File Information Returns Electronically
If the trust is above the threshold and submits a paper return anyway, the IRS treats it as a failure to file. That means the same penalties apply as if the return had never been sent, even if you mailed it before the deadline.5Internal Revenue Service. Instructions for Form 5227 (2025) Trusts filing fewer than 10 total returns can still file on paper.
Trustees who meet the threshold but face genuine hardship can request a waiver. The request must be submitted at least 45 days before the return’s due date, and the IRS will notify you whether it is approved.6Internal Revenue Service. Topic No. 803, Electronic Filing Waivers or Exemptions and Filing Information Returns
Penalties for Missing the Deadline
Section 6652(c)(2)(C) sets the penalties when a split-interest trust files late, files an incomplete return, or furnishes incorrect information. Penalties fall on the trust unless the trustee can show reasonable cause.
The base penalty is $20 per day for each day the failure continues, up to $10,000 per return. Trusts with gross income exceeding $250,000 face a higher rate: $100 per day, up to $50,000 per return. At that rate, a return only a few months late can reach the cap.7Office of the Law Revision Counsel. 26 USC 6652 – Failure to File Certain Information Returns, Registration Statements, Etc.
Personal liability is a real risk. If the person responsible for filing knowingly fails to file, the same penalty is imposed on that individual personally, in addition to the penalty on the trust.7Office of the Law Revision Counsel. 26 USC 6652 – Failure to File Certain Information Returns, Registration Statements, Etc.
A separate $50 penalty applies for each missing taxpayer identification number for a beneficiary listed on Schedule A. If you cannot obtain a beneficiary’s TIN, the Form 5227 instructions direct you to attach a signed affidavit explaining the circumstances.5Internal Revenue Service. Instructions for Form 5227 (2025)
All of these penalties can be waived if the trustee establishes reasonable cause. The instructions do not lay out a checklist, but the general standard is showing that the failure was not due to willful neglect and that reasonable steps were taken to comply. Keep records of any obstacles, professional consultations, and corrective steps in case you need to make that showing later.5Internal Revenue Service. Instructions for Form 5227 (2025)