Capital Cost Allowance (CCA) in Canada Explained

Capital cost allowance (CCA) is the tax deduction a Canadian sole proprietor claims for the declining value of business assets — equipment, vehicles, computers, furniture and similar property — used to earn income. You do not write off the full purchase price in the year you buy a capital asset. Instead, you claim CCA over several years on a CRA schedule filed with your T2125.

Capital cost allowance vs. accounting depreciation

Depreciation is a bookkeeping estimate that spreads an asset's cost across its useful life. Capital cost allowance is the tax version of that idea, and the two rarely match. CRA sets the rules: each depreciable asset falls into a prescribed class, and you claim a percentage of the remaining undepreciated capital cost (UCC) each year. Because the classes, rates and limits come from the Income Tax Regulations, you calculate CCA the way CRA expects — not the way your accounting software depreciates the asset.

Only depreciable property used to earn business or professional income qualifies. Land is not depreciable, inventory held for resale is not depreciable, and purely personal property is excluded. When an asset is used partly for personal purposes — a vehicle is the classic example — you generally claim CCA only on the business-use portion.

Capital expenses vs. current expenses

The first question is whether a purchase is a capital expense or a current expense. Get it wrong and the deduction lands in the wrong year.

A repair that simply keeps an asset working is usually a current expense. A cost that improves the asset, extends its life or changes how it is used is generally capital. The broader list of write-offs is covered in sole proprietorship tax deductions, and vehicle costs in particular are addressed in the guide to the vehicle expense deduction.

How CCA classes and rates work

CRA assigns each type of asset to a class, and each class carries a prescribed rate. You apply that rate to the undepreciated capital cost — the balance left in the class after previous claims and adjustments — rather than to the original purchase price. Common categories a sole proprietor will meet include:

• Furniture, fixtures and equipment used in a shop, studio or office
• Passenger vehicles and other automotive equipment
• Computers, peripherals and systems software
• Leasehold improvements to rented premises
• Goodwill and certain other eligible intangible assets

Rates are published by CRA and change only when the law changes. Confirm the current rate for your asset class on canada.ca before you file, since a wrong class means a wrong claim.

One rule trips up most first-time filers: the half-year rule. In the year you acquire most assets, you are generally allowed to claim only half of the CCA that the class rate would otherwise produce. The restriction eases in later years, when you apply the full rate to the remaining UCC. Some classes and some acquisitions are exempt, so check the current rules rather than assuming.

Claiming CCA on your T2125

As a sole proprietor you report business income on Form T2125, Statement of Business or Professional Activities, and you calculate CCA on the accompanying CCA schedule. The usual sequence is:

1. Confirm the asset was bought to earn business income and that you still owned it at year-end.
2. Determine the correct CRA class and the rate that applies to it.
3. Add the capital cost to the class, excluding any GST/HST you recovered as an input tax credit.
4. Apply the half-year rule where it applies to the acquisition.
5. Multiply the rate by the undepreciated capital cost to arrive at the claim.
6. Enter the amount on your T2125 and carry the resulting net income to your T1 return.

Keep the schedule year over year. Your opening UCC is your closing UCC from the previous year, so continuity matters. The mechanics of the form are explained in the T2125 guide, and the filing steps in how to file taxes as a sole proprietor.

Recapture, terminal loss and disposals

When you sell a depreciable asset or stop using it in the business, the proceeds reduce the class balance. If the proceeds exceed the remaining UCC and no assets are left in the class, the difference is recapture and is added to your business income. If the class ends with a balance still in it after all assets are gone, you may have a terminal loss, which is generally deductible against business income. A disposal also changes every future CCA claim on that class, so record the date, proceeds and any related costs.

Records, GST/HST and common mistakes

Keep the invoice, receipt and proof of payment for every asset you add to a class, along with the date it was put to use. If you are registered for GST/HST and claim input tax credits, the tax you recover is generally excluded from the capital cost. Input tax credits are the starting point for that calculation.

Three mistakes recur. Claiming CCA on ordinary repairs that belong in current expenses is the first. Claiming CCA that would create or increase a business loss is the second — CRA generally does not allow it. Forgetting to reduce a class when an asset is sold, scrapped or converted to personal use is the third. Remember too that CCA is optional: you may claim less than the maximum, but a smaller claim now leaves a larger UCC and larger claims later. This is general information, not tax advice — confirm current rates, classes and limits on canada.ca or with a tax professional.