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What is the difference between accounting depreciation and capital allowances?

Depreciation is the accountant's charge in the financial statements, spreading an asset's cost over its useful life. Capital allowances are the tax law's own rates for claiming that cost against taxable income. The two usually differ, so the tax computation adds back depreciation and deducts allowances.

Accounting depreciation

  • Set by the company within the accounting standard (method, life, residual value)
  • Shown in the profit or loss statement

Capital allowance

  • Prescribed by the Income Tax Act 1967 (Schedule 3): fixed rates by asset type
  • Not tied to what the accounts show
  • Claimed in the tax computation

How they connect

  1. Accountant records depreciation in the accounts
  2. In the tax computation, depreciation is added back to profit as non-deductible
  3. Capital allowances are then deducted
  4. The gap creates a timing difference, which may need deferred tax under the accounting standard in some frameworks

What the bookkeeper must do

  • Keep the fixed asset register with the data the tax agent needs: date of purchase, cost, whether used for business, and disposal details
  • Record disposal proceeds
  • Do not change accounting depreciation to "match" tax; keep the two separate

Allowance rates are not listed here; see the tax section for current rates and claims.

  • Income Tax Act 1967, Schedule 3
  • MPERS Section 17

Sources

Applies to 2026 · Last reviewed 29 October 2026

General information for business owners, not legal, tax or professional advice. Rules change, so check the sources or ask a licensed professional before you act.

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    What is the difference between accounting depreciation and capital allowances? | OCTIS