26.3 Simple and Complex Trusts, Tiers & Distribution Timing
Key Takeaways
A simple trust under IRC §651 must satisfy three strict tests: all FAI must be distributed currently, no corpus/principal may be distributed, and no charitable contributions may be made under §642(c).
Trust classification is determined on an annual basis: distributing corpus in Year 2 causes a trust to be classified as complex, even if it was simple in Year 1 and reverts to simple in Year 3.
Under the complex trust two-tier system (IRC §662), Tier 1 distributions (mandatory current income) absorb DNI first; any residual DNI is allocated pro-rata among Tier 2 distributions (discretionary income and corpus distributions).
Simple Trusts vs. Complex Trusts (IRC §§ 651 & 661)
Subchapter J divides all non-grantor trusts into two statutory categories: Simple Trusts (governed by IRC §§ 651 and 652) and Complex Trusts (governed by IRC §§ 661 and 662). Decedents' estates are always taxed under complex trust rules because estates are never legally mandated to distribute all income currently.
Trust Classification Framework
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Simple Trust (IRC §651) Complex Trust (IRC §661)
1. Instrument MANDATES all FAI 1. Discretion to accumulate income, OR
distributed currently 2. Actually distributes corpus, OR
2. Distributes NO corpus during year 3. Makes charitable gifts (§642(c))
3. Makes NO charitable gifts (§642(c))
• \$300 Personal Exemption • \$100 Personal Exemption
The Three Cumulative Criteria for a Simple Trust (IRC §651(a)):
To qualify as a simple trust in any given tax year, a trust must satisfy all three of the following requirements:
- Mandatory Current Income Distribution: The governing instrument must require that all Fiduciary Accounting Income (FAI) be distributed currently (at least annually). It does not matter whether the trustee actually cuts the check before December 31; the legal requirement to distribute currently governs.
- No Corpus/Principal Distributions: The trust must make no distribution of amounts other than income during the tax year. Distributing even $1 of principal or corpus immediately disqualifies the trust from simple trust status for that tax year.
- No Charitable Contributions: The trust terms must not provide for any amounts to be paid, permanently set aside, or used for charitable purposes under IRC §642(c).
The Annual Operational Determination Rule:
Trust classification is not a permanent election. It is evaluated on an annual operational basis:
- If a trust document requires all income to be distributed annually and authorizes the trustee to distribute principal for a beneficiary's health or education, the trust is a simple trust in any year where no principal is distributed.
- If the trustee distributes $10,000 of principal to pay for a beneficiary's college tuition in Year 2, the trust becomes a complex trust for Year 2 (claiming a $100 exemption).
- In Year 3, if no principal is distributed, the trust reverts to simple trust status (claiming a $300 exemption).
- Year of Termination: In the year a trust terminates, it must distribute all remaining assets (corpus) to remainder beneficiaries; therefore, a trust is always a complex trust in its final year.
Complex Trust Distribution Tiers (IRC §662)
When a complex trust or estate makes distributions to multiple beneficiaries and total distributions exceed DNI, Subchapter J applies a mandatory Two-Tier System to allocate DNI:
Allocation of DNI Under the Two-Tier System
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Tier 1 Distributions Tier 2 Distributions
• Income REQUIRED to be • Discretionary income distributions
distributed currently (FAI) • Distributions of corpus/principal
• Absorbs DNI FIRST • Absorbs residual DNI ONLY
• Taxed up to 100% of DNI • Excess is tax-free return of corpus
Tier 1 Distributions (IRC §662(a)(1)):
- Definition: Amounts of income required to be distributed currently under the terms of the governing document (mandatory FAI distributions), whether actually paid out or not.
- Tax Treatment: Tier 1 distributions absorb DNI first. If total Tier 1 distributions exceed DNI, each Tier 1 beneficiary includes in taxable income a proportionate share of DNI:
When Tier 1 distributions equal or exceed DNI, Tier 1 absorbs 100% of the DNI. Tier 2 beneficiaries receive their distributions completely tax-free.
Tier 2 Distributions (IRC §662(a)(2)):
- Definition: All other amounts properly paid, credited, or required to be distributed, including discretionary distributions of current income, distributions of accumulated income from prior years, and distributions of trust principal/corpus.
- Tax Treatment: Tier 2 distributions are taxable only if DNI exceeds total Tier 1 distributions. If Tier 1 distributions do not exhaust DNI, the residual DNI is allocated pro-rata among Tier 2 beneficiaries:
Any Tier 2 distribution in excess of a beneficiary's share of residual DNI is treated as a tax-free distribution of corpus.
The 65-Day Rule Election (IRC §663(b))
Under IRC §663(b), the fiduciary of a complex trust or estate can elect to treat any amount properly paid or credited to a beneficiary within the first 65 days of a tax year as having been paid or credited on the last day of the preceding tax year (December 31):
- Filing the Election: The fiduciary makes the election on Form 1041, Page 3, Question 6, filed by the due date of the return (including extensions). Once made, the election is irrevocable for that tax year.
- Deadline: The payment must occur by the 65th day of the following year (March 6, or March 5 in a leap year).
- The Statutory Ceiling Limitation: Under Treas. Reg. §1.663(b)-1(a)(2), the amount to which the election applies cannot exceed the greater of:
- The trust's Fiduciary Accounting Income (FAI) for the preceding tax year; OR
- The trust's Distributable Net Income (DNI) for the preceding tax year; reduced by any amounts previously paid, credited, or required to be distributed in that preceding tax year.
Planning Purpose: The 65-day rule provides trustees with post-year-end flexibility to calculate exact annual income and distribute just enough to avoid the brutal 37% compressed fiduciary tax bracket.
A trust agreement requires the trustee to distribute all accounting income to Beneficiary Luke annually, prohibits charitable gifts, and permits distributions of principal. In Year 1, the trust distributes only accounting income. In Year 2, the trustee distributes accounting income plus $5,000 of trust principal to Luke. How is the trust classified for tax purposes?
Simple trust in both Year 1 and Year 2
Complex trust in both Year 1 and Year 2
Simple trust in Year 1, and Complex trust in Year 2
Grantor trust in Year 1, and Simple trust in Year 2
A complex trust has Distributable Net Income (DNI) of $60,000 for 2025, consisting entirely of taxable ordinary income. Under the terms of the trust, the trustee is required to distribute $40,000 of income currently to Beneficiary A (Tier 1). The trustee also exercises discretion to distribute $20,000 to Beneficiary B and $20,000 to Beneficiary C (Tier 2). How much DNI is taxable to Beneficiary B?
$0
$5,000
$20,000
$10,000
Sections you finish are checked off in the contents.