01 / 21

Taxation of
Trusts & Estates

Master the rules for how trusts and estates are taxed as separate entities: income computation, distributable net income, and the distribution deduction.

CPA Regulation (REG)

What Are Trusts and Estates?

Trust
A legal arrangement where a grantor transfers property to a trustee who manages it for the benefit of beneficiaries.
Estate
A legal entity formed upon a person's death to hold and distribute the decedent's assets during the administration period.

The Key Players in a Trust

Grantor Creates the trust Transfers Trustee Manages property Distributes Beneficiary Receives income IRS (Form 1041) Tax on retained income

Why This Matters on the CPA Exam

Trust and estate taxation is a high-frequency topic on the REG section. You need to understand how income flows between the entity and beneficiaries, and how the distribution deduction prevents double taxation.

Compressed Brackets
Trusts hit the top 37% bracket at only \( \$14{,}450 \) of taxable income (vs. \( \$578{,}125 \) for individuals).
Distribution Deduction
The trust deducts income distributed, shifting the tax burden to beneficiaries at their lower rates.
K-1 Reporting
Beneficiaries receive Schedule K-1 showing their share of income, deductions, and credits.

The Core Taxable Income Formula

Gross Income − Deductions (expenses, fees) − Distribution Deduction (limited by DNI) − Personal Exemption = Taxable Income of Trust/Estate

Distributable Net Income: DNI

DNI is the ceiling on the distribution deduction and determines how much of a distribution is taxable to beneficiaries. It represents the entity's economic income available for distribution.

1
Start with Adjusted Total Income: This is gross income minus allowable deductions (like trustee fees), but before subtracting the distribution deduction or personal exemption.
2
Subtract net capital gains allocated to corpus (since they aren't available to income beneficiaries).
3
Add net tax-exempt interest (since it's economically available to distribute, even if not taxed).
4
The result is Distributable Net Income (DNI).

Simple vs. Complex Trusts

Simple Trust Complex Trust
Income Distribution Must distribute all current income May accumulate income
Corpus Distribution Cannot distribute corpus May distribute corpus
Charitable Contributions Not permitted Permitted (deductible)
Personal Exemption \( \$300 \) \( \$100 \)
Distribution Deduction Lesser of DNI or required distribution Lesser of DNI or actual distribution

The Distribution Deduction Rule

DNI (The Ceiling) Actual Distribution (Amount Paid) vs. LESSER OF Distribution Deduction Reduces trust's taxable income

Income Character Flows Through

Distributions to beneficiaries retain the same character as they had in the trust or estate. If the trust earns interest, dividends, and rent, the beneficiary reports each type proportionally.

Interest
Ordinary income: taxed at the beneficiary's marginal rate.
Dividends
Qualified dividends: taxed at preferential capital gains rates.
Capital Gains
Generally allocated to corpus and taxed at the trust level unless distributed.

Step-by-Step: Computing Trust Tax

1
Calculate gross income: Include all income items: interest, dividends, rents, capital gains, etc.
2
Subtract deductions: Trustee fees, tax preparation, and other allowable expenses.
3
Compute DNI: Adjusted Total Income, adjusted for capital gains and tax-exempt interest.
4
Determine distribution deduction: Lesser of DNI or amounts distributed to beneficiaries.
5
Compute taxable income: Gross income − deductions − distribution deduction − personal exemption.
6
Apply tax rates: Use compressed trust tax brackets to determine tax owed.

Example 1: Simple Trust

A simple trust earns \( \$20{,}000 \) in interest income and pays \( \$2{,}000 \) in trustee fees. It is required to distribute all income to its sole beneficiary.

1
Gross income: \( \$20{,}000 \)
2
Deductions: \( \$2{,}000 \) (trustee fees)
3
DNI: Adjusted Total Income is \( \$20{,}000 - \$2{,}000 \) = \( \$18{,}000 \). This is the DNI.
4
Distribution deduction: Lesser of DNI (\( \$18{,}000 \)) or amount distributed (\( \$18{,}000 \)) = \( \$18{,}000 \)

Example 2: Complex Trust

A complex trust earns \( \$30{,}000 \) interest, \( \$10{,}000 \) in long-term capital gains (allocated to corpus), and pays \( \$3{,}000 \) in fees. The trustee distributes \( \$15{,}000 \) to beneficiaries.

1
Gross income: \( \$30{,}000 + \$10{,}000 = \$40{,}000 \)
2
Adjusted Total Income: \( \$40{,}000 - \$3{,}000 = \$37{,}000 \)
3
DNI: Adjusted Total Income (\( \$37{,}000 \)) minus capital gains to corpus (\( \$10{,}000 \)) = \( \$27{,}000 \)
4
Distribution deduction: Lesser of DNI (\( \$27{,}000 \)) or distributed (\( \$15{,}000 \)) = \( \$15{,}000 \)

Example 3: Estate with Tax-Exempt Income

An estate earns \( \$50{,}000 \) taxable interest and \( \$10{,}000 \) in tax-exempt municipal bond interest. Expenses are \( \$6{,}000 \). The estate distributes \( \$40{,}000 \).

1
Allocate expenses: \( \$6{,}000 \times \frac{\$10{,}000}{\$60{,}000} = \$1{,}000 \) to tax-exempt income. Remaining \( \$5{,}000 \) to taxable.
2
Adjusted Taxable Income: \( \$50{,}000 - \$5{,}000 = \$45{,}000 \)
3
DNI: \( \$45{,}000 \) (taxable portion) + \( \$9{,}000 \) (net tax-exempt) = \( \$54{,}000 \)
4
Distribution deduction: Lesser of \( \$54{,}000 \) or \( \$40{,}000 \) = \( \$40{,}000 \). Reduce by tax-exempt portion: \( \$40{,}000 \times \frac{\$9{,}000}{\$54{,}000} \approx \$6{,}667 \). Deduction = \( \$33{,}333 \).

Grantor Trust Rules

If the grantor retains too much control or benefit over the trust, the IRS treats the trust as a "grantor trust" and taxes all income directly to the grantor, not the trust entity.

Revocable Trust
Grantor can revoke or amend the trust at any time: always a grantor trust.
Retained Benefits
Grantor retains income, reversionary interest > 5%, or power to control beneficial enjoyment.
Tax Result
Trust is disregarded for income tax: all items reported on the grantor's Form 1040.

Common Mistakes to Avoid

✕ Ignoring DNI Ceiling
The distribution deduction is limited to DNI, not the full amount distributed. Excess distributions are tax-free returns of corpus.
✕ Wrong Exemption Amount
Simple trust: \( \$300 \). Complex trust: \( \$100 \). Estate: \( \$600 \). Mixing these up is a frequent exam trap.
✕ Capital Gains in DNI
Capital gains allocated to corpus are subtracted from DNI. Only include them if the trust instrument allocates them to income or distributes them.

Summary Comparison

Simple Trust Complex Trust Estate
Tax Return Form 1041 Form 1041 Form 1041
Exemption \( \$300 \) \( \$100 \) \( \$600 \)
Must Distribute Income Yes No No
Can Distribute Corpus No Yes Yes
Charitable Deduction No Yes Yes
Fiscal Year Allowed No No Yes

Question 1 of 5

A simple trust has \( \$25{,}000 \) of interest income and \( \$3{,}000 \) of trustee fees. What is the trust's DNI?

Question 2 of 5

What is the personal exemption for a complex trust?

Question 3 of 5

A complex trust has DNI of \( \$30{,}000 \) and distributes \( \$45{,}000 \) to beneficiaries. What is the distribution deduction?

Question 4 of 5

Which entity may elect to use a fiscal year-end for tax reporting purposes?

Question 5 of 5

A grantor retains the power to revoke the trust at any time. How is the trust's income taxed?