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12.3 Tax Year Selection

Key Takeaways

  • Calendar Year: Jan 1 – Dec 31 (default for individuals).

  • Fiscal Year: 12 months ending last day of any month (not Dec).

  • 52-53 Week Year: ends same day of week each year.

  • Pass-throughs: required year based on owner(s).

  • Section 444: max 3-month deferral with required payments.

  • Natural Business Year: 25% of receipts in last 2 months.

Last updated: October 2026

Why This Matters for the Exam

Tax year rules prevent deferral abuse. Know the required year hierarchy and Section 444 limits.

Types of Tax Years

TypeDefinition
CalendarJan 1 – Dec 31
Fiscal12 months, last day of month (not Dec)
52-53 WeekEnds same weekday each year

Required Year (Pass-Throughs)

PriorityPartnership Rule
1Majority interest year (>50% same year)
2Principal partners year (all 5%+ same)
3Least aggregate deferral
S-CorpsRule
DefaultCalendar year
ExceptionBusiness purpose or §444

Section 444 Election

RequirementDescription
Max deferral3 months
Required paymentsForm 7519 (interest-free deposit)
Tiered structuresGenerally not available

Section 444 Example

Required YearAllowed §444 Years
December 31Sept 30, Oct 31, Nov 30
NOT allowedJune 30 (6-month deferral)

Natural Business Year Test

RequirementDescription
25% test25%+ receipts in last 2 months
Duration3 consecutive years
BenefitNo §444 payments required

Form 1128

| Purpose | Change in tax year | | IRS approval | Required for most changes |

Real-World Scenario

Scenario: A 2025 S-Corp (all calendar-year shareholders) wants a June 30 fiscal year under §444.

  • Required year: December 31.
  • Maximum deferral: 3 months.
  • June 30: 6-month deferral = prohibited.
  • Result: Cannot use §444 for June 30.

On the Exam

Question types to practice on tax year:

  1. §444 Questions: "Can S-Corp elect June 30 year?"
  2. Required Year Questions: "What is partnership's required year?"
  3. 52-53 Week Questions: "What is this type of year?"

The key is to remember: Pass-throughs match owners. §444 = max 3 months. Natural business year = 25% test. 52-53 week = ends same weekday.

Test Your Knowledge

S-Corp (all calendar shareholders) wants June 30 fiscal under §444. Allowed?

A

Yes, with §7519 payments

B

No, deferral exceeds 3 months

C

Yes, if 52-53 week

D

No, S-Corps cannot have fiscal years

Test Your Knowledge

Year ending "last Saturday in January." What type?

A

Calendar

B

Fiscal

C

52-53 Week

D

Short Tax Year

Test Your Knowledge

Natural Business Year requires what % of receipts in last 2 months?

A

10%

B

20%

C

25%

D

50%

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