Using the 65-day rule to lower a trust’s 2025 taxes

Using the 65 day rule to lower a trusts 2025 taxes starts with IRC Section 663(b). Under that section, a trustee of some irrevocable trusts may elect to treat certain early-year distributions as prior-year distributions. In practice, the window covers the first 65 days of the new year. For example, a non-grantor irrevocable trust generally has until March 6, 2026, to act for the 2025 tax year. The trustee can then elect to treat those distributions as 2025 distributions for income tax purposes. This article is educational, and it is not tax advice for any individual trust.

Why using the 65 day rule to lower a trusts 2025 taxes matters

Trust brackets compress quickly. Individual brackets do not. As a result, a modest amount of retained income can push a trust into the top federal rate. In contrast, an individual beneficiary may still sit in a lower bracket at the same dollar figure. That gap is the reason planners look at this election each winter.

Rate figures for 2025

These 2025 figures come from IRS Rev. Proc. 2024-40. Of course, you should verify them with your tax professional before acting.

• First, a trust or estate reaches the top 37% federal rate at roughly $15,650 of taxable income.
• Next, a single individual reaches that same 37% rate only above about $626,350 of taxable income.
• Finally, married taxpayers filing jointly reach it only above about $751,600.

State income tax rules differ, and the 3.8% net investment income tax can apply at either level. Therefore, the federal brackets alone do not settle the question.

How the election works in practice

A distribution carries taxable income out to the beneficiary through distributable net income. In other words, the trust takes a deduction and the beneficiary reports the income. The mechanics look like this:

1. First, the trustee reviews the trust document and confirms that the terms permit the distribution.
2. Next, the trustee makes the distribution within the first 65 days of 2026.
3. In addition, the trustee files the Section 663(b) election with the trust’s timely filed 2025 return.
4. Finally, the beneficiary reports the income on a Schedule K-1 and pays at their own rate, which may be lower or higher than the trust’s rate.

Where the limits sit

The election can shift income, yet it cannot manufacture a better outcome on its own. For instance, a beneficiary in the top bracket may owe as much as the trust would have owed. The kiddie tax rules can produce a similar result for a minor beneficiary. Some trust documents also restrict distributions or bar capital gains from distributable net income. Meanwhile, the distribution itself is permanent. Once assets leave the trust, the family gives up the creditor protection and the control the trust provided. Most importantly, the trustee owes a fiduciary duty to every beneficiary, so tax savings alone cannot drive the decision.

What to review before the deadline

Trustees can work through this list with a CPA. Each item is a question to raise when using the 65 day rule to lower a trusts 2025 taxes.

• First, check whether the trust permits income, and sometimes capital gains, to flow into distributable net income.
• Next, confirm that the trust is a non-grantor, complex trust that can shift taxation to beneficiaries.
• In addition, compare the trust’s 2025 income and gains against each beneficiary’s own 2025 tax picture.
• Review carryover losses from prior years, which may already offset trust income.
• Meanwhile, total the distributions the trust already made during 2025.
• Of course, weigh the non-tax consequences, including asset protection and the needs of remainder beneficiaries.
• Finally, file the election on time with Form 1041 and document the decision for your CPA.

How to read the March deadline

The 65 day window runs from the start of the calendar year. It closes on March 6, 2026, for the 2025 tax year. Planning ahead of that date gives the trustee time to value assets and talk with the beneficiaries. Fortunately, the trustee can set the exact amount after year end, once the 2025 figures are clear. However, the trustee must still file the election with a timely filed Form 1041.

A note on scope

Activest publishes this material for education only. Using the 65 day rule to lower a trusts 2025 taxes carries specific qualifications and filing requirements under Section 663(b). Therefore, a qualified tax professional should review your particular circumstances first. Activest does not provide tax or accounting services. Nothing here is a recommendation for any individual trust or beneficiary.