How to keep a CPA error log you will actually use

An entry such as 'FAR, question 18, answer C' will mean very little next week. Write the decision in ordinary language: 'I used the full annual cost when the question asked for three months of expense.' That sentence identifies something you can check the next time a similar fact pattern appears.

Carnegie Mellon's exam-wrapper approach asks students to identify recurring errors and adjust their preparation. The log below is our practical adaptation for CPA practice. It is a study tool, not an official exam requirement or a validated score predictor.

Choose entries that deserve another look: repeated mistakes, misunderstood rules, missed conditions, and correct answers reached by guessing. A one-time typo may only need a quick correction. Recording everything equally can bury the few patterns that need sustained attention.

A notebook or a simple spreadsheet works. Keep the question reference so you can revisit it, but write the rule in your own words. These five fields are enough to start:

• Reference: date, exam section, topic, and question ID or bookmark.
• My decision: what I actually did, including the assumption I made.
• Cause: a rule gap, a missed fact, a setup error, an execution error, or an unsupported guess.
• Repair: the controlling rule and one concrete change to my next attempt.
• Retest: when I will try a fresh question and what happened when I did.

Do not let a category become an excuse. 'Careless' is too broad to guide practice. 'I read the payment date but missed the coverage start date' points to a specific fix: mark the period before calculating. If several causes contributed, record the one that would have changed your answer first.

The missed decision

At December 31, the question asks for insurance expense since October 1. You answer $12,000 because you focus on the cash paid. Three months have elapsed, so expense is $12,000 / 12 x 3 = $3,000. The remaining $9,000 relates to future coverage.

The useful log entry

• Reference: FAR / prepayments / bookmark this practice illustration.
• My decision: I treated the payment as the expense for the reporting period.
• Cause: setup error; I did not distinguish cash paid from coverage used.
• Repair: write the coverage dates, count elapsed months, then calculate the requested balance.
• Retest: later this week, solve a different coverage period without opening this explanation.

The next question should change the dates or ask for the prepaid asset instead of expense. That checks whether you can choose the right amount. Repeating '$3,000' from memory only checks familiarity with this example.

When the rule is missing

Return to the relevant lesson in your main CPA course. Close the lesson and explain the rule aloud, including its conditions. Then try one focused problem. More random questions may not help if you cannot yet describe what the rule says.

When the facts or calculation were mishandled

Keep the rule and change the process. Underline the reporting date, label units, write a short equation, or separate the book balance from the bank balance. Avoid adding a ten-step checklist to every easy question; add the check that addresses your actual pattern.

When the answer was a guess

Log the unresolved choice even if your selection was correct. Explain why the chosen answer fits and why the closest alternative does not. If you cannot make that distinction, the correct result has not yet demonstrated understanding.

At the end of a set, select the most useful entries and schedule a later check. At your weekly review, group repeated causes. Three questions about different topics may reveal the same habit of ignoring a date or answering a different question from the one asked.

Move an entry out of active review when you can explain the rule and apply it to fresh examples after a delay. Bring it back if the same mistake returns. No particular number of successful retests guarantees mastery; the point is to use evidence beyond the original answer.

On World of Accountants, use bookmarks to find the original practice item and the dashboard to see patterns. Keep the five-field notes in your own notebook or spreadsheet. The site supports the practice loop; it does not require a separate built-in error-log feature.