The 65-Day Rule: One of the Most Powerful Trust Tax Strategies

With tax day upon us, I thought it When it comes to trust administration, timing can determine who ultimately pays the tax. The “65-Day Rule” gives trustees a limited opportunity after year-end to make strategic decisions that can significantly reduce tax liability.

What Is the 65-Day Rule?

The 65-Day Rule allows a trust or estate to:

• Make a distribution within the first 65 days of a new tax year; and
• Elect to treat that distribution as if it were made in the prior tax year

In practical terms, this provides a short window after December 31 to adjust the prior year’s tax outcome.

What Types of Trusts Does This Apply To?

This rule applies only to entities taxed as separate taxpayers.

Applies to:

• Irrevocable (non-grantor) trusts
• Complex trusts (those that accumulate income or make discretionary distributions)
• Simple trusts (limited practical use, since they are generally required to distribute income annually)
• Estates during administration

Does not apply to:

• Revocable living trusts during the grantor’s lifetime
• Grantor trusts (where income is reported on the grantor’s individual tax return)

The rule is irrelevant for grantor trusts because the income is already taxed to the individual.

Why This Matters

Trusts reach the highest federal income tax bracket very quickly.

For 2025:

• The top tax bracket applies at approximately $15,000 of income

Without planning:

• Trust income: $100,000
• Most of the income is taxed at the highest rate

With the 65-Day Rule:

• Income is distributed to beneficiaries within the 65-day window
• Income is taxed to the beneficiaries instead

Beneficiaries are often in lower tax brackets, resulting in reduced overall tax liability.

Timeline

For a calendar-year trust:

1. Tax year ends: December 31
2. 65-day window closes: March 6 (or March 5 in leap years)
3. Distributions made within this window may be treated as prior-year distributions if the election is made

Example

• Trust income in 2025: $80,000
• No distributions made in 2025

In February 2026:

• Trustee distributes $80,000

If the election under IRC §663(b) is made:

• The distribution is treated as made in 2025
• Beneficiaries receive a 2025 Schedule K-1
• The trust avoids taxation on that income

How the Election Is Made

The election is made on the trust’s income tax return:

• IRS Form 1041

A statement is typically attached, such as:

“The fiduciary elects under IRC Section 663(b) to treat distributions made within the first 65 days of the taxable year as distributions made on the last day of the preceding taxable year.”

 

Important Limitations

The 65-Day Rule is subject to several important limitations:

Applies only to:

• Distributions of income (Distributable Net Income or DNI)

Does not apply to:

• Distributions of principal beyond available DNI
• Distributions made after the 65-day window

Additional rules:

• The election must apply to all distributions made during the 65-day period
• Selective application is not permitted

 

Why CPAs Use This Strategy

The rule provides flexibility in tax planning by allowing fiduciaries to:

1. Wait until the trust’s final income is known
2. Determine the optimal amount to distribute
3. Shift taxable income to beneficiaries in lower tax brackets
4. Reduce or eliminate trust-level taxation

 

The Bottom Line

The 65-Day Rule is a powerful tool in trust administration, but it requires:

• The correct type of trust (non-grantor)
• Timely action within the 65-day window
• Proper election on Form 1041

Trustees and advisors should evaluate this option annually as part of their tax planning strategy.

 

Trust administration involves more than managing assets—it requires strategic decision-making. The 65-Day Rule is a clear example of how proper timing can significantly impact tax outcomes.