Asset Depreciation Calculator

Section 11(e) of the South African Income Tax Act allows taxpayers to claim a wear-and-tear allowance on assets used for trade purposes. SARS publishes Interpretation Note 47 which lists acceptable useful lives for various asset categories. The allowance is calculated on a straight-line basis over the asset's useful life. This deduction reduces taxable income each year the asset is in use.

Straight-line depreciation spreads the cost evenly over the asset's useful life, resulting in the same expense each year. Declining balance applies a fixed percentage to the remaining book value, so the expense is higher in early years and decreases over time. Declining balance better reflects assets that lose value quickly, like vehicles and technology equipment.

For South African tax purposes, SARS generally requires the straight-line method under Section 11(e) wear-and-tear allowances. The useful life periods are prescribed by SARS Interpretation Note 47. However, certain assets may qualify for accelerated write-offs under Sections 12C (machinery) or 12E (small business corporations). Always consult a tax professional for your specific situation.

Salvage value (also called residual value) is the estimated amount an asset will be worth at the end of its useful life. It reduces the total depreciable amount: you only depreciate the difference between the asset cost and salvage value. A higher salvage value means lower annual depreciation expenses. For SARS purposes, assets are often depreciated to a nil residual value.

Under IFRS and South African accounting standards, a change in depreciation method is treated as a change in accounting estimate and applied prospectively (from the current period forward). For tax purposes, SARS prescribes the method under Section 11(e), so changes require careful consideration. You should consult your accountant before making any changes to ensure compliance with both accounting standards and SARS requirements.