Key Takeaways

  • DNI limits the deduction the trust/estate can take for distributions.
  • DNI also limits how much beneficiaries must include in income.
  • DNI = Taxable income + adjustments (tax-exempt interest, exemption, capital gains to corpus).
  • DNI ensures income is taxed only once—either to fiduciary or beneficiaries.
  • The distribution deduction equals the lesser of actual distributions or DNI.
  • DNI preserves the character of income (ordinary, capital, tax-exempt).
Last updated: January 2026

Distributable Net Income (DNI)

Why This Matters for the Exam

DNI is the most important concept in trust/estate taxation. It prevents double taxation and determines how income is allocated between the fiduciary and beneficiaries.

Expect at least 2-3 questions on DNI.

What Is DNI?

Distributable Net Income (DNI) is a calculated amount that serves as a ceiling on:

DNI LimitsDescription
Distribution deductionTrust/estate can't deduct more than DNI
Beneficiary incomeBeneficiaries can't include more than DNI

The Purpose: Prevent Double Taxation

Without DNI, income could be taxed twice:

  • Once to the trust when earned.
  • Again to the beneficiary when distributed.

DNI ensures income is taxed only once—to either the trust OR the beneficiaries, not both.

DNI Calculation

Start WithAdjustment
Taxable IncomeStarting point
+ Tax-Exempt InterestAdd back (allocable portion)
+ Personal ExemptionAdd back
- Capital Gains Allocated to CorpusSubtract (not available for distribution)
- Extraordinary Dividends to CorpusSubtract
= DNIResult

DNI Formula (Simplified)

DNI = Taxable Income
      + Tax-Exempt Interest
      + Personal Exemption
      - Capital Gains to Corpus

The Distribution Deduction

The trust/estate gets a distribution deduction for amounts distributed to beneficiaries, but capped at DNI:

ScenarioDistribution Deduction
Distributions < DNIActual distributions
Distributions > DNIDNI (capped)
Distributions = DNIDNI

Character of Income

DNI preserves the character of income:

Income Type in TrustCharacter to Beneficiary
Ordinary incomeOrdinary income
Qualified dividendsQualified dividends
Capital gainsCapital gains (if distributed)
Tax-exempt interestTax-exempt

DNI Example

Scenario: Trust has:

  • Taxable income: $50,000
  • Tax-exempt interest: $5,000
  • Personal exemption: $100
  • Capital gains allocated to corpus: $10,000
  • Distributions to beneficiaries: $60,000

DNI Calculation:

  • $50,000 + $5,000 + $100 - $10,000 = $45,100 DNI

Distribution Deduction:

  • Distributions: $60,000
  • DNI: $45,100
  • Deduction: $45,100 (capped at DNI)

Beneficiary Income:

  • Beneficiaries include $45,100 (not $60,000).

Tier Allocation

When distributions exceed DNI, income is allocated by tier:

TierPriorityReceives
First-TierRequired distributionsDNI first
Second-TierOther distributionsRemaining DNI

Real-World Scenario

Scenario: A trust has DNI of $30,000. It must distribute $25,000 to Beneficiary A (first-tier) and distributes $15,000 to Beneficiary B (second-tier).

  • Total distributions: $40,000.
  • DNI available: $30,000.
  • Beneficiary A income: $25,000 (first-tier takes all its distribution).
  • Beneficiary B income: $5,000 (remaining DNI: $30,000 - $25,000).
  • $10,000 to B is tax-free (exceeds DNI, treated as corpus).

On the Exam

Expect 2-3 questions on DNI, typically:

  1. Purpose Questions: "What is the primary purpose of DNI?"
  2. Calculation Questions: "Trust has DNI of $X and distributes $Y. What is the deduction?"
  3. Ceiling Questions: "What does DNI limit?"

The key is to remember: DNI = ceiling on deduction and beneficiary income. Prevents double taxation. Distributions > DNI = tax-free to beneficiary.

Test Your Knowledge

What is the primary purpose of DNI?

A
B
C
D
Test Your Knowledge

Trust has DNI of $40,000 and distributes $60,000. What is the distribution deduction?

A
B
C
D
Test Your Knowledge

Trust distributes $50,000 but DNI is $35,000. How much must beneficiaries include in income?

A
B
C
D