Depreciation Calculations and Entries
Purpose, methods, pro-rating, changes in estimates, accumulated depreciation and the financial-statement entries for depreciable assets.
How to study AAT Level 3
Move from verified source data to controlled calculations, reconcile the accounting result, test its business meaning and communicate it with the ethical and technical care expected at Level 3.
Core concepts
Concept 1
Depreciation allocates depreciable amount over useful life; it is not a valuation exercise or a cash reserve.
Exam cue: Identify cost, residual value, method, rate, useful life and time held before calculating.
Concept 2
Straight-line and reducing-balance methods produce different expense patterns and must follow the policy and timing stated.
Exam cue: Use opening carrying amount for a reducing-balance calculation unless the task specifies otherwise.
Concept 3
The depreciation entry recognises an expense and increases accumulated depreciation without directly reducing cash.
Exam cue: Reconcile cost, accumulated depreciation and carrying amount after the entry.
Risk pitfalls and guardrails
Calculating reducing-balance depreciation on original cost every year.
Guardrail: Do not rely on a familiar formula, rate or policy until you have confirmed the period, source data, calculation basis and current technical scope.
Treating depreciation as cash saved for asset replacement.
Guardrail: Do not rely on a familiar formula, rate or policy until you have confirmed the period, source data, calculation basis and current technical scope.
Ignoring the stated policy for acquisition or disposal timing.
Guardrail: Do not rely on a familiar formula, rate or policy until you have confirmed the period, source data, calculation basis and current technical scope.
Memory anchors
Depreciable Amount
Depreciable amount is cost less residual value.
Straight Line
Straight-line depreciation allocates a consistent amount across the useful life, subject to timing policy.
Reducing Balance
Reducing-balance depreciation applies the rate to the opening carrying amount.
Accumulated Depreciation
Accumulated depreciation is the total depreciation recognised on an asset to date.
Carrying Amount
Carrying amount equals cost less accumulated depreciation.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
An asset costs £26,000, has a £2,000 residual value and a six-year life. What is annual straight-line depreciation?
A machine costing £18,000 has no residual value and a four-year life. What is its carrying amount after two full years of straight-line depreciation?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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