http://www.iras.gov.sg/irasHome/page04.aspx?id=9246
What is capital allowance (CA) and who can claim
What is capital allowance
Capital allowances are deductions that you can claim on the wear and tear of fixed assets bought and used in your trade or business.
Capital allowances are given in place of depreciation and other capital expenditure, which are not deductible for income tax purposes.
Who can claim capital allowance
If your company carries on a trade or business, your company can claim capital allowances on expenditure incurred on the provision of "plant and machinery" for use in the trade or business. The exception is where capital allowance for an asset is specifically prohibited under the Income Tax Act (e.g. "S" plate private passenger car).
