Free tool
Depreciation Calculator: SLM and WDV
Build a year-by-year depreciation schedule for an asset using the straight-line or written down value method.
Depreciation schedule
Enter the cost and number of years.
Arithmetic only, using the cost, rate and life you enter. It does not look up useful lives or rates for asset classes under the Companies Act or the Income-tax Act, which differ, and it does not handle part-year or additions. Confirm with your accountant. Not accounting advice.
Depreciation questions
What is straight line depreciation?
The same amount is charged every year: (cost minus salvage value) divided by the useful life in years.
What is written down value depreciation?
A fixed percentage is charged on the opening written down value each year, so the charge is highest in year one and falls over time.
What is salvage value?
The amount you expect the asset to be worth at the end of its life. Straight line depreciation stops once the asset reaches this value.
Which depreciation rates should I use?
Companies and tax rules set useful lives and rates by asset type, and these can differ between accounting and tax. Ask your accountant which apply to you.
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