One of the most common practical questions about the ICAEW ACA is how long it takes to complete. The short answer is 3–4 years for most candidates — but that headline figure conceals a range of variables that can push your timeline shorter or longer depending on your entry route, exam performance, work experience structure, and personal circumstances.
The Typical ACA Timeline: 3–4 Years
Most candidates who begin the ACA via a standard graduate training contract at an accounting firm qualify within 3 to 4 years. Here is why:
Work experience requirement: The ACA requires a minimum of 450 days of verified qualifying work experience. At 5 working days per week, 52 weeks per year, that is approximately 260 working days per year — meaning 450 days takes roughly 1 year and 9 months of full-time work in qualifying roles. However, work experience must cover a range of competency areas, and most firms structure training contracts for 3 years to ensure proper development.
Exam progression: The ACA's 14 exams are structured across three levels that must be completed in sequence. Certificate → Professional → Advanced. Even with no resits, the exam schedule dictates a minimum timeline of approximately 18–24 months to complete all three levels.
Combining the work experience and exam requirements, 3 years is approximately the minimum realistic timeline for a full-time training contract candidate with no resits. Most candidates take slightly longer due to resits at Professional or Advanced Level.
ACA Timeline by Level
Certificate Level: 3–6 Months (Typically)
Certificate Level papers are computer-based and available on demand. A motivated candidate can sit and pass all six Certificate papers in 3–6 months by studying consistently alongside work.
Many training firms schedule Certificate Level completion within the first year of the training contract, often within the first 6 months. Some larger firms have their intake sit Certificate papers in the first few weeks via intensive preparation programmes.
- Minimum time: 3 months (with intensive study and no resits)
- Typical time: 4–6 months
Professional Level: 12–18 Months (Typically)
Professional Level papers are written exams sat four times per year (March, June, September and December). With four sittings per year, six papers could theoretically be completed across two sittings (6 months minimum), thoughoss two sittings per year means a minimum of approximately 12 months to complete the level if you sit three papers per sitting — though most candidates sit one or two papers per sitting.
A realistic approach for most candidates is 2–3 papers per sitting, completing Professional Level across 3–4 sittings (18–24 months). Resits extend this timeline.
- Minimum time: 12 months (3 papers in each of 2 sittings, no resits)
- Typical time: 15–24 months
Advanced Level: 12–18 Months (Typically)
The two Advanced Level papers (Technical Case Study and Strategic Case Study) are sat in July and November each year. A candidate who passes the Technical Case Study in July can potentially sit the Strategic Case Study in November — completing Advanced Level in as little as four months in the best case. However, given the difficulty of these papers and the 40–50% first-attempt failure rate, most candidates need more than one sitting cycle.
- Minimum time: 4–6 months (passing both first attempt within the same exam year)
- Typical time: 12–18 months (allowing for some resits)
Factors That Affect How Long ACA Takes
1. Resits
Resits are the single biggest variable. At Certificate Level, a resit adds a few weeks (on-demand format). At Professional Level, a resit adds 6 months (the gap to the next sitting). At Advanced Level, a resit can add 6–12 months. A candidate who passes every paper first time will qualify significantly faster than one who needs 3–4 resits.
2. Your Training Contract Structure
Training firms structure their ACA programmes differently. Some large firms have cohorts that sit exams together at set points in the year. Some firms are more flexible, allowing candidates to book exams according to their own readiness. The firm's approach to study leave and exam preparation support also affects how quickly you can progress.
3. Exemptions
If you hold a relevant prior qualification (accredited accounting degree, ACCA papers, etc.) and receive exemptions from some Certificate Level papers, you can enter at a higher point and reduce your overall timeline accordingly. Full Certificate Level exemptions could save 4–6 months.
4. Part-Time or Non-Training Contract Routes
Candidates pursuing the ACA outside of a standard 3-year full-time training contract (e.g., part-time roles, the Training Outside of Principal route) will typically take longer — both because fewer working days accumulate per year and because exam progression may be slower.
5. Personal Circumstances
Parental leave, health issues, career changes, or other life events can interrupt ACA progress. ICAEW has policies for suspending training and managing interruptions — speak to your firm and ICAEW directly if you need to pause your training.
Can You Complete the ACA Faster Than 3 Years?
Theoretically, yes — but practically, very few candidates complete in under 3 years.
The 450-day experience requirement is a hard floor: full-time, that takes approximately 22 months of work. Add exam progression and the mandatory staging between Certificate → Professional → Advanced, and sub-3-year qualification is possible only for candidates who enter with significant exemptions, pass every paper first attempt, and have a firm that supports rapid progression.
What Happens After You Pass All 14 Exams?
Passing all 14 ACA exams does not automatically make you an ICAEW member. You also need to:
- Complete 450 days of verified work experience (this often happens simultaneously with the exams under a training contract)
- Complete the Ethics Learning Programme (online modules)
- Complete Professional Development requirements
- Have your training employer certify your experience
- Apply for ACA membership via ICAEW
If you are on a standard training contract, your firm will manage most of this process. Confirmation of membership typically comes a few weeks after your final certification is submitted.
Frequently Asked Questions
How long does it take to complete the ICAEW ACA with a Big Four training contract?
Most Big Four training contracts are structured for 3 years. Candidates who pass all papers first attempt can qualify in 3 years; those with some resits typically take 3.5–4 years. A small number of exceptionally strong candidates have qualified in under 3 years by passing all exams rapidly and accumulating experience quickly, but this is uncommon.
Can I do the ACA in 2 years?
In practice, no. The 450-day work experience requirement alone takes approximately 22 months of full-time work. Add the sequential exam structure (Certificate → Professional → Advanced, with limited sitting windows), and completing the qualification in 2 years is not feasible for the vast majority of candidates. The realistic minimum is approximately 2.5–3 years.
How long does the Advanced Level Case Study take to prepare for?
Most candidates start Case Study preparation when the pre-seen material is released, approximately 6 weeks before the exam. However, preparation for the Case Study in terms of ensuring your technical knowledge across all 14 exams is adequate should begin much earlier — as you complete your Professional Level papers.
What if I fail an Advanced Level paper? How much time does it add?
If you fail an Advanced Level paper, you must wait for the next available sitting. Corporate Reporting and Strategic Business Management are sat once per year (July). A fail in July means waiting until the following July — a 12-month delay for those papers. The Case Study has sittings in November and July (with some years having an additional window), so a fail there typically adds 6 months.
Does the ACA take longer if I am not on a training contract?
Yes — generally significantly longer. Without a training contract, you may accumulate work experience more slowly (depending on your role) and have less employer support for exam preparation. The Training Outside of Principal (TOP) route requires additional planning and ICAEW approval. Candidates not on training contracts commonly take 4–6+ years to complete the ACA.
Compare Your Options with Learnsignal
If the ACA's 3–4 year timeline gives you pause, it is worth comparing it with ACCA (which many candidates complete on a similar timeline but with more flexibility) or CIMA (which also takes 3–5 years but with an on-demand structure that suits self-study better).
More useful reading: What is ICAEW? | Is ICAEW Worth It? | How Hard is ICAEW? | ACA vs ACCA
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Johnny Meagher
Expert Tutor at Learnsignal
Qualified professional with years of experience in teaching and helping students achieve their accounting qualifications.
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