ACCA FR Consolidation June 2026: The Mid-Year Acquisition Error the Examiner Calls "Fundamental"

The error the examiner calls "fundamental"

The ACCA FR Sept/Dec 2025 examiner used two words most students never want to see next to their answer: "fundamental accounting error." If you fail to time-apportion a subsidiary's results in the consolidated statement of profit or loss — or you multiply them by the parent's holding — you score zero marks for the consolidation itself, before a single adjustment is even considered.

What the Dec 2025 sitting actually said

The Sept/Dec 2025 paper included Partridge Co, a consolidated statement of profit or loss preparation worth 15 marks. Strawberry Co was acquired on 1 July 20X5. Year-end was 31 March 20X6. The correct apportionment is 9/12.

The examiner's verdict: "As in previous diets, many candidates adjusted the subsidiary results incorrectly by either using an incorrect number of months or, critically, by not apportioning at all."

It got worse. Some candidates applied proportionate consolidation — multiplying Strawberry's full results by 80%. The report labels this a second fundamental error. Either mistake wipes out your marks for consolidating the parent and subsidiary line by line. You can still pick up marks on the adjustments, but the base is gone.

For context: FR returned a 50% pass rate at the March 2026 sitting. That is not a margin you want to surrender in your opening line.

Wrong vs right — in 30 seconds

Acquisition: 1 July 20X5. Year-end: 31 March 20X6. Parent owns 80%.

WRONG: Add 100% of Strawberry's full-year revenue to Partridge's revenue.

WRONG: Multiply Strawberry's full-year revenue by 80% and add it.

RIGHT: Multiply Strawberry's full-year revenue by 9/12, then add 100% of that to Partridge's. The NCI gets its 20% share at the bottom of the statement, not in the revenue line.

The same 9/12 rule then drives the fair value depreciation charge, the unwinding of deferred consideration, and the post-acquisition portion of the intragroup dividend.

3 things to do before June 2026

1. Write the dates first. Before you touch revenue or cost of sales, write the acquisition date and year-end at the top of your spreadsheet. Calculate the months. Put "× X/12" in your pro forma header next to every subsidiary line so you cannot forget.

2. Set up profit attribution before you fill any numbers. Pro forma the consolidated profit, then "Attributable to: Owners of the parent / Non-controlling interest" at the bottom. The Dec 2025 report is blunt: "Many candidates ignore this area completely and miss several marks as a result."

3. Show every working. Per the examiner: candidates who use the calculator tool with no workings "will only score full marks for a correct answer but, if the answer is incorrect and in the absence of a relevant working, no marks will be awarded." Use the spreadsheet. Label every cell.

Bottom line

50% of the FR cohort passed in March 2026. A meaningful slice of the other 50% knew the technical content but lost the consolidation base because they forgot to check a single date. Read the acquisition date before you read anything else on the question. That one check is worth more marks than any IFRS standard you will memorise this week.