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Periodic weighted average cost

Periodic weighted average cost assigns a common unit cost based on the cost and quantity of goods available over a period. The resulting average is used to value issues and closing inventory for that period. If eight of the twenty units remain, closing inventory is 24 and twelve units issued have an assigned cost of 36.

Worked example

Ten units at 2 and ten at 4 give an average of 3 per unit.

Common mistake

Using the moving average after each receipt when the question asks for a periodic average.

Where it appears in your exams

QualificationExamRelationshipPeriod
ACCA F1 Supporting July 2027–August 2028
ACCA F2 Direct July 2027–August 2028
ACCA FA Direct September 2026–June 2027
ACCA K1 Direct July 2027–August 2028
FIA FFA Direct September 2026–June 2027

Related terms

Also called: periodic AVCO