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Reducing-balance depreciation

Reducing balance depreciation applies a constant percentage to the asset’s opening carrying amount, normally producing larger charges early and smaller charges later. It can suit assets whose benefits are consumed more rapidly in earlier years. The amount must not be depreciated below its residual value, and part-year charges follow the facts and policy stated in the question.

Worked example

An asset costs $10,000 and is depreciated at 20% reducing balance: year one is $2,000; year two is 20% of $8,000, or $1,600.

Common mistake

Do not apply the percentage to original cost every year: that would produce a constant charge rather than reducing balance.

Where it appears in your exams

QualificationExamRelationshipPeriod
ACCA F1 Direct July 2027–August 2028
ACCA F2 Supporting July 2027–August 2028
ACCA FA Direct September 2026–June 2027
ACCA K1 Direct July 2027–August 2028
CIMA BA3 Direct Official assessment-window verification pending
CIMA F1 Direct Official assessment-window verification pending
FIA FFA Direct September 2026–June 2027

Related terms

Also called: Reducing balance method, Diminishing balance method, Depreciation reducing balance method