ICAEW allow four attempts at each Certificate Level and Professional Level exam (with the exception of the Business Planning and Financial Accounting and Reporting assessments), and an unlimited number of attempts at the Advanced Level exams. For those students in an ACA training agreement, your employer may advise you on how many exam attempts they are prepared to support. Check with your employer to make sure you are clear on their expectations. you can find more information on the ICAEW website.