It’s late January. A trustee is reviewing the annual statements for a family trust and discovers a large, unexpected capital gain was realized in late December. The trust’s beneficiaries are in high tax brackets, and distributing that income now, in the new year, seems too late. The trust itself will face a compressed—and very high—tax rate on that retained income. But for a prudent trustee, the tax year did not necessarily end on December 31st.
An often-overlooked provision in the Internal Revenue Code gives trustees a second chance. The 65-day rule allows a trustee to treat certain distributions made in the new year as if they occurred in the previous one.
The Mechanics of the 65-Day Rule
The 65-day rule is a strategic election. Under IRC § 663(b), a trustee can elect to treat distributions made to a beneficiary within the first 65 days of the new tax year as having been paid on the last day of the preceding tax year. For a calendar-year trust, this means distributions made up to March 6th (or March 5th in a leap year) can be applied to the prior year’s tax liability.
This election matters because trusts are subject to highly compressed tax brackets. They reach the top federal income tax rate at a much lower income level than individuals do. The goal is often to pass the income—and the tax liability—through to the beneficiaries via distributions. The beneficiaries then pay the tax at their individual rates, which are frequently lower than the trust’s rate. This is accomplished by issuing a Schedule K-1 to the beneficiary, who then reports the income on their personal return.
The 65-day rule provides crucial flexibility. It allows a trustee to see the final, complete financial picture for the year before deciding on the exact amount of income to distribute. It turns tax planning from a guessing game in December into a deliberate, data-driven decision in February.
A Trustee’s Fiduciary Duty in New York
This is not merely a tax-filing tactic. It is a direct exercise of a trustee’s fiduciary duty. In New York, a trustee is held to a high standard of care. This duty of prudence, codified in laws like the Prudent Investor Act (EPTL § 11-2.3), requires a trustee to consider the tax consequences of investment decisions and distributions. A trustee’s duty extends beyond preserving principal; it requires managing the trust’s assets for total return, which includes minimizing tax erosion.
Making a 663(b) election is an active choice. It must be formally made on the trust’s annual income tax return, Form 1041. The decision requires a careful analysis: What is the trust’s taxable income for the year? What are the individual tax situations of the beneficiaries? Does the trust instrument itself grant the trustee the discretion to make these kinds of distributions?
Failing to consider the 65-day rule could, in some circumstances, be seen as a failure to act prudently. Imagine a scenario where a trust pays thousands in avoidable taxes simply because the trustee was unaware of this 65-day window. The beneficiaries could rightly question whether the trustee fulfilled their duty of stewardship.
When the Rule May Not Apply
The 65-day rule is a powerful tool, but it is not a universal fix. Honesty about what the law can and cannot do is critical. There are situations where making the election would be imprudent or even impossible.
First, the trust document governs all. If the trust’s terms restrict the timing or amount of distributions, those terms supersede the flexibility offered by the tax code. A trustee’s power flows from the trust instrument, and violating its terms is a breach of fiduciary duty.
Second, the beneficiaries’ own tax situations must be considered. If a beneficiary is already in a higher tax bracket than the trust, pushing more income to them would be counterproductive. The goal is to lower the overall tax burden on the family’s assets, not simply shift it from one pocket to another at a higher cost.
Finally, this rule applies to distributions of income, not principal. It is a tool for managing the flow of Distributable Net Income (DNI), a specific tax concept. It cannot be used to retroactively re-characterize distributions of the trust’s corpus.
The decision to use the 65-day rule must be intentional and well-documented. It is a hallmark of a diligent, professional trustee who understands that managing a legacy is about more than just balancing a checkbook—it’s about foresight and prudent action.
If you are serving as a trustee for a New York trust and are uncertain about your tax-planning responsibilities, the first step is a thorough review of the trust document. Our firm can conduct a fiduciary review to clarify your discretionary powers and help you understand the tools available for effective trust administration.





