CPA Exam 18-Month Credit Expiration Rule: What You Must Know
Understand the CPA exam 18-month credit expiration window, how it works under the new exam structure, and strategies to pass all sections before credits expire.
The 18-Month Rolling Window Explained
One of the most stressful aspects of the CPA exam journey is the 18-month credit expiration rule. Once you pass your first exam section, a clock starts ticking. You must pass all remaining sections within 18 months of the date you passed your first section. If you fail to complete all sections within this window, your earliest passed section expires and you must retake it.
This rule creates urgency and requires careful planning. Understanding exactly how the window works and developing a strategy to complete all sections within it is essential for every CPA candidate.
How the 18-Month Window Works
The 18-month clock begins on the date the AICPA scores your first passing section, not the date you took the exam and not the date you received your score. From that point, you have 18 months to pass all remaining sections. If you pass Section A on January 15, your 18-month window expires on July 15 of the following year.
The window is rolling, which means it applies to each section individually. If Section A expires, you only lose credit for Section A. Sections B and C that you passed within the window remain valid, and a new 18-month clock starts from the date of your earliest remaining passing section. However, you still need to pass all sections within an 18-month span measured from the oldest valid credit.
Example Scenario
Consider a candidate who passes FAR on March 1, 2025. Their 18-month window closes on September 1, 2026. If they pass AUD on June 1, 2025, and REG on November 1, 2025, they must pass their discipline section by September 1, 2026 (18 months from their first pass on March 1, 2025). If they fail to pass the discipline section by that date, their FAR credit expires. Their window then resets to 18 months from the next oldest credit (AUD on June 1, 2025), giving them until December 1, 2026 to pass both the discipline section and retake FAR.
Changes Under the 2024 CPA Exam Structure
The CPA exam transitioned to a new structure in January 2024 under CPA Evolution. The exam now consists of three core sections (AUD, FAR, and REG) and one discipline section chosen by the candidate (BAR, ISC, or TCP). The 18-month rule still applies across all four required sections. Credits earned under the old exam structure were transitioned according to specific AICPA guidelines, and candidates who had valid credits at the time of the transition received appropriate credit under the new framework.
Strategies to Beat the 18-Month Clock
Plan Your Section Order Strategically
Start with the section you find most challenging. If you front-load the hardest material, you reduce the risk of running out of time on a section that requires multiple attempts. Many candidates begin with FAR because it covers the largest volume of material and has one of the lower pass rates.
Maintain Study Momentum
Do not take extended breaks between sections. The most successful candidates maintain a consistent study schedule, transitioning from one section to the next within one to two weeks. Long gaps between sections waste precious time from your 18-month window and allow previously studied material to fade from memory.
Build in Buffer Time
Plan to complete all four sections within 12 to 14 months rather than relying on the full 18-month window. This buffer gives you time to retake a section if needed without the pressure of an expiring credit looming over you.
Track Your Timeline
Keep a detailed calendar showing the date you passed each section, the 18-month expiration date for each credit, and your planned study and testing dates for remaining sections. Review this calendar regularly and adjust your plan as needed.
What Happens If a Credit Expires
If a credit expires, you must retake that section and pass it again. You do not lose credits for the other sections that are still within their 18-month windows. However, losing a credit extends your overall CPA exam journey and adds additional costs in exam fees and study materials. Candidates who lose credits often experience increased stress and decreased motivation, which can create a negative cycle of additional failed sections.
Special Circumstances and Extensions
In rare circumstances, state boards may grant extensions to the 18-month window. These typically involve documented medical emergencies, military deployment, or natural disasters. Extensions are granted at the discretion of individual state boards and require formal applications with supporting documentation. The COVID-19 pandemic prompted widespread temporary extensions, but such broad accommodations are exceptional.
- Contact your state board immediately if you face circumstances that may prevent you from testing within your window.
- Document everything and submit extension requests well before your credits are set to expire.
- Do not assume an extension will be granted. Continue studying and testing as if the standard timeline applies.
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