Tax and accounts
Depreciation Calculator
Compare straight line and written down value calculations using your chosen useful life or annual rate.
Review asset accounting
Scope and assumptions
This is an arithmetic planning tool. It does not choose a Companies Act useful life or Income Tax block rate. Accounting depreciation and tax depreciation can differ. It excludes deferred tax, revaluation, impairment and disposal gains.
The formula is shown above for reproducibility. Inputs are illustrative assumptions, not statutory rates.
How to use the result
Change one assumption at a time to compare scenarios. Recalculate after editing any input. Confirm the underlying facts before making a filing or financial decision.
Explore all calculators →