Key Takeaways

  • The accumulated earnings tax (AET) is a 20% penalty tax.
  • Applies when corporations retain earnings beyond reasonable business needs.
  • Purpose: Prevent avoiding shareholder dividend taxation.
  • Credit: $250,000 for regular corps, $150,000 for PSCs.
  • Reasonable needs include expansion, working capital, debt retirement.
  • Burden of proof shifts to corporation if over $250,000 accumulated.
Last updated: January 2026

Accumulated Earnings Tax (AET)

Why This Matters for the Exam

The AET is a trap for corporations that retain too much earnings. The exam tests the rate, the credit, and what constitutes reasonable business needs.

Expect at least 2-3 questions on AET.

What Is the AET?

The accumulated earnings tax is a 20% penalty tax on corporations that accumulate earnings beyond reasonable business needs to avoid shareholder dividend taxation.

AET ElementDetail
Rate20%
Applies toAccumulated taxable income
PurposePrevent tax avoidance
In addition toRegular 21% corporate tax

The Tax Avoidance Scheme

Without AET, shareholders could:

StepEffect
1. Retain earningsPay only 21% corporate tax
2. Never pay dividendsAvoid 0-20% dividend tax
3. Sell stock laterPay only 0-20% capital gains

Result: Avoid the 20% dividend tax entirely. AET prevents this.

Accumulated Earnings Credit

Corporations can retain a minimum amount without AET risk:

Corporation TypeCredit Amount
Regular C corporation$250,000
Personal service corporation$150,000

Note: These amounts have never been inflation-adjusted since 1981.

Reasonable Business Needs

Accumulating beyond the credit is permitted if for reasonable business needs:

Acceptable NeedsNot Acceptable
Working capital requirementsLoans to shareholders
Business expansionPersonal investments
Acquiring another businessVague expansion plans
Debt retirementAvoiding dividend tax
Anticipated lawsuitsStock investments unrelated to business
Stock redemption for estate taxes

Calculating Accumulated Taxable Income

Start WithAdjustment
Taxable incomeStarting point
- Federal income taxesDeduct
- Charitable contributions (over 10%)Deduct excess allowed
- Accumulated earnings creditDeduct ($250k or $150k)
- Dividends paid deductionDeduct
= Accumulated taxable incomeAET base

Burden of Proof

Accumulated E&PBurden of Proof
≤$250,000IRS must prove tax avoidance
>$250,000Corporation must prove reasonable needs

AET Calculation Example

ItemAmount
Taxable income$600,000
Federal taxes paid($126,000)
Net after taxes$474,000
Less: Dividends paid($50,000)
Less: AE Credit($250,000)
Accumulated taxable income$174,000
AET (20%)$34,800

Real-World Scenario

Scenario: A corporation with $500,000 accumulated E&P pays no dividends. The IRS asserts the accumulation is to avoid dividend tax.

  • Burden: Corporation must prove reasonable business needs.
  • Documentation needed: Board minutes, expansion plans, working capital analysis.
  • If no proof: AET applies at 20% on excess over $250,000.

On the Exam

Expect 2-3 questions on AET, typically:

  1. Rate Questions: "What is the AET rate?"
  2. Credit Questions: "What is the accumulated earnings credit?"
  3. Reasonable Needs Questions: "Which is a reasonable business need?"

The key is to remember: 20% AET. Credit = $250,000 (regular) / $150,000 (PSC). Document reasonable business needs.

Test Your Knowledge

What is the accumulated earnings tax rate?

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B
C
D
Test Your Knowledge

What is the accumulated earnings credit for a regular C corporation?

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B
C
D
Test Your Knowledge

Which is a reasonable business need for accumulating earnings?

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B
C
D