Answer:
a. Prepare the entry to correct the prior year's depreciation, if necessary.
- When an asset's useful life is extended, the extension is done prospectively, not retrospectively. This means that past depreciation does not need to be adjusted.
b. Prepare the entry to record depreciation for 2021.
- Dr Depreciation expense 4,510
- Cr Accumulated depreciation - machinery 4,510
Step-by-step explanation:
purchase cost of machinery $66,000
estimated useful life 8 years
estimated salvage value $4,400
depreciation has been recorded using the previous basis during the first 5 years, but now the estimated useful life was extended to 10 years and the salvage value = $4,950
depreciation expense per year (during first 5 years) = ($66,000 - $4,400) / 8 = $7,700 per year
accumulated depreciation up to year 5 = $7,700 x 5 = $38,500
the carrying value of the asset on January 1, 2021 = $66,000 - $38,500 = $27,500
the new depreciation expense per year = ($27,500 - $4,950) / 5 = $4,510
depreciation expense for 2021:
Dr Depreciation expense 4,510
Cr Accumulated depreciation - machinery 4,510