Depreciation
- Straight-line
- (cost − salvage)/life
- Double-declining balance
- 2/life × book value at the start of the year
- Sum of the years’ digits
- (cost − salvage) × remaining life/SYD
- SYD
- n(n + 1)/2
- Book value
- cost − accumulated depreciation
Formula sheets, the key method steps for every topic and 4 practice problems, with full solutions at the back.
Revenue is €200,000 and cost of sales is €140,000. What is the gross profit margin?
An asset is impaired when its carrying amount is higher than its:
A machine costs €20 000, has a useful life of 5 years and a salvage value of €3 000. Using the double-declining-balance method (without switching to straight-line), find the depreciation charge D in year 3.
A computer system costs €24 000, has a useful life of 10 years and a salvage value of €3 500. Using the sum-of-the-years’-digits method, find the depreciation charge D in year 5.
Answer: D · 30%
Gross profit = €60,000. Margin = €60,000 ÷ €200,000 = 30%.
Answer: C · Recoverable amount (the higher of fair value less costs of disposal and value in use)
If the carrying amount exceeds the recoverable amount, the difference is written off as an impairment loss.
Answer: D = 2880 €
Depreciation spreads the cost of an asset over its useful life. Straight-line: (cost − salvage value)/life every year. Double-declining balance: 2/life times the book value at the start of each year, so the charge falls each year (salvage is not subtracted, but the book value never goes below it). Sum-of-the-years’-digits: (cost − salvage) × remaining life/(1 + 2 + … + n).
Answer: D = 2236 €
Depreciation spreads the cost of an asset over its useful life. Straight-line: (cost − salvage value)/life every year. Double-declining balance: 2/life times the book value at the start of each year, so the charge falls each year (salvage is not subtracted, but the book value never goes below it). Sum-of-the-years’-digits: (cost − salvage) × remaining life/(1 + 2 + … + n).
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