Capital cost allowance is the deduction that lets a Canadian business write off the cost of depreciable property over several years instead of all at once. You assign each asset to a prescribed class under Schedule II of the Income Tax Regulations, apply that class’s rate to the remaining balance each year, and claim the result on your return. The Canada Revenue Agency’s technical guide to how the system works is Income Tax Folio S3-F4-C1, and the practical rules below flow from it.
What Counts as Depreciable Property
Not every business asset qualifies. To meet the definition of depreciable property under subsection 13(21) of the Income Tax Act, three conditions must hold: you own the property, it falls within a prescribed class in Schedule II of the Regulations, and it is available for use.1Canada Revenue Agency. Income Tax Folio S3-F4-C1, General Discussion of Capital Cost Allowance
Several categories are explicitly out. Inventory is out, because items held for resale follow different rules. Land is out, because it does not wear out or become obsolete. Property whose cost is already deductible as a current expense is out, along with Canadian renewable and conservation expenses and scientific research expenditures that have their own deduction regimes.
Ownership includes beneficial ownership, not just legal title. A partnership that acquires property is treated as the owner for CCA purposes. If you hold a leasehold interest, you can claim CCA on capital improvements you make to a leased property, but not on the underlying lease itself unless you have incurred a capital cost in connection with it.
Capital Expenditure or Current Expense
Before CCA enters the picture, the spending has to be capital in nature. A capital expenditure creates a lasting benefit or adds a new asset to the business. A current expenditure covers day-to-day costs like routine maintenance or minor repairs, and it is fully deductible in the year you incur it. The CRA weighs factors such as whether the outlay creates an enduring benefit, whether it restores something to original condition or improves it, and whether the cost is large relative to the property’s value.
Getting this classification wrong hurts in either direction. Treating a capital cost as current inflates your first-year deduction and invites reassessment. Treating a current cost as capital delays deductions you were entitled to take right away.
What Goes Into the Capital Cost
The capital cost of a property is more than the sticker price. It also includes the costs of acquiring the property and putting it into service:
- Legal, accounting, and engineering fees paid to complete the purchase
- Site preparation, delivery, installation, and testing
- For self-manufactured property, the material, labour, and overhead you incurred to build it, though not any profit margin you might have earned by selling it instead
Building projects bring in “soft costs” such as interest, property taxes, and professional fees incurred during construction. These must be capitalized and added to the building’s cost rather than deducted as current expenses. Working the other way, government assistance, investment tax credits, and trade-in allowances reduce the capital cost. If a grant offsets part of the purchase price, the grant-funded portion does not form part of your depreciable base.
CCA Classes and Rates
Every depreciable property is assigned to a class in Schedule II, and each class carries a maximum annual rate. In most classes CCA is calculated on a declining balance basis: the rate applies to the remaining undepreciated capital cost each year rather than the original purchase price.2Canada Revenue Agency. Amount of Capital Cost Allowance You Can Claim Deductions are larger early on and shrink over time.
Some of the classes you are most likely to encounter:
- Class 1 (4%): most buildings acquired after 1987. Eligible non-residential buildings used for manufacturing or processing can qualify for an effective rate of up to 10%.
- Class 8 (20%): a catch-all class for property that does not fit elsewhere, including furniture, fixtures, appliances, tools costing $500 or more, and general machinery.
- Class 10 (30%): motor vehicles, passenger vehicles below the prescribed cost limit, and certain older computer equipment.
- Class 10.1 (30%): passenger vehicles costing more than the prescribed amount. Each vehicle goes in its own separate class.
- Class 12 (100%): small tools, medical instruments, and kitchen utensils costing less than $500, plus computer software that is not systems software.
- Class 14.1 (5%): goodwill and former eligible capital property. Property acquired before January 1, 2017 can be depreciated at 7% for tax years ending before 2027.
- Class 43 (30%): machinery and equipment used primarily for manufacturing and processing in Canada.
- Class 50 (55%): general-purpose computer hardware and systems software acquired after March 18, 2007.
Classification trips up even experienced preparers. A single purchase sometimes needs to be split across classes, and additions or alterations to existing property may fall into different classes from the original asset.3Canada Revenue Agency. Classes of Depreciable Property
The Half-Year Rule and the Accelerated Investment Incentive
In the year you acquire a depreciable property, you normally cannot claim CCA on the full cost. The half-year rule under Regulation 1100(2) limits the first-year claim to half the amount that would otherwise be available, calculated class by class. Buy $30,000 of Class 8 property with no dispositions in the class, and your first-year CCA is based on $15,000.4Canada Revenue Agency. Chapter 4 – Capital Cost Allowance
The rule does not apply everywhere. Properties in Classes 13, 14, 23, 24, 27, 34, and 52, along with most Class 12 items like small tools, are exempt. It also does not apply when the available-for-use rules have already delayed the CCA claim to the second tax year after acquisition.
For eligible property acquired after November 20, 2018, the Accelerated Investment Incentive (AII) enhances or replaces the normal half-year rule. For property that would ordinarily be subject to the half-year rule, the AII suspends that rule and allows a first-year deduction based on one-and-a-half times the net addition to the class. The practical effect is a first-year allowance roughly three times what the old half-year rule produced.5Canada Revenue Agency. Accelerated Investment Incentive
The incentive is phasing out. For property that becomes available for use during 2024 through 2027, the enhanced first-year allowance drops to about two times the normal first-year deduction for property subject to the half-year rule. After 2027, the incentive expires and the standard half-year rule applies again. If you are planning significant purchases in 2026, timing matters.
Available-for-Use Rules
Buying a property is not enough to start claiming CCA. The Act requires the property to be available for use first, and the rules differ for buildings and everything else.
Under subsection 13(28), a building generally becomes available for use at the earliest of: when substantially all of it is first used for its intended purpose, when construction or renovation is complete, the start of the second tax year after the year of acquisition, or immediately before you dispose of it.
Under subsection 13(27), other property becomes available for use at the earliest of: when you first use it to earn income, the start of the second tax year after acquisition, immediately before you dispose of it, or the date it is delivered and capable of producing a commercially saleable product or performing its intended function. The two-year rolling-start rule acts as a backstop that prevents indefinite delays on property you have paid for but not yet put into service.
Undepreciated Capital Cost Year to Year
The undepreciated capital cost (UCC) of a class is the running balance that drives your annual CCA. You start with the total capital cost of every property ever added to the class, then subtract all CCA previously claimed, all proceeds of disposition, and other adjustments. What remains is available for future depreciation.
Each year the balance moves in two directions:
- Increases: new property added to the class at its capital cost.
- Decreases: CCA claimed during the year, proceeds of disposition from property sold or otherwise disposed of, and government assistance received.
Your CCA claim for a year equals the prescribed rate for the class times the UCC, after applying the half-year rule or AII adjustments. If a tax year is shorter than 12 months, Regulation 1100(3) requires you to prorate the claim by the number of days in the short year divided by 365.
CCA is discretionary. You can claim any amount from zero up to the maximum. In a year where income is low or losses will carry forward anyway, skipping CCA preserves UCC for later years when the deduction offsets higher-taxed income.
Recapture and Terminal Loss
Two things can happen when the UCC balance goes offside at year-end.
When decreases to a class exceed increases, the UCC goes negative. Subsection 13(1) requires that negative balance to be included in income for the year. This is recapture, and it typically happens when you sell a property for more than its remaining book value in the class. The system is clawing back CCA deductions that turned out to be excessive because you recovered more on disposition than the remaining UCC suggested.6Justice Laws Website. Income Tax Act RSC 1985 c 1 (5th Supp) – Section 13 Recapture can also arise without a disposition, if government assistance received in a later year pushes the balance negative.
The opposite case: a UCC balance stays positive, but you no longer own any property in the class. Under subsection 20(16), you deduct the remaining UCC as a terminal loss in the year the last property leaves the class. This makes sure you eventually get a full deduction for the cost of the property, even where the rate and declining-balance method would have dragged the write-off out for decades.
One exception: Class 10.1 passenger vehicles do not allow terminal losses or recapture. Each vehicle sits in its own class, and the luxury-vehicle rules override the general provisions.
Related-Party Purchases and Personal-to-Business Conversions
When you acquire depreciable property from someone you do not deal with at arm’s length, paragraph 13(7)(e) adjusts the capital cost. If you pay more than the seller’s original cost, your deemed capital cost is generally the seller’s cost plus half the gain. If you pay less, your capital cost is deemed to be the seller’s original cost, with the difference treated as if CCA had already been claimed. The rule stops related parties from bumping up the depreciable base by shuffling assets at inflated prices.
If you start using personal property in your business, you are treated as having disposed of it at fair market value at the time of the change. When that fair market value is less than what you originally paid, your capital cost for CCA is the fair market value. When it is higher, a special calculation applies and a capital gain may arise on the personal side, though you can file an election to defer it. The half-year rule applies to property transferred from personal to business use, even where it would otherwise be exempt for the same type of asset acquired at arm’s length.
Where to Claim CCA
The form depends on how the business is structured.
- Sole proprietors and partnerships calculate CCA in Area A of Form T2125, Statement of Business or Professional Activities. Columns track the opening UCC, additions, dispositions, half-year or AII adjustments, the CCA claimed, and the closing UCC for each class. Even if you choose not to claim CCA in a particular year, you still report any additions or dispositions to keep class balances current.7Canada Revenue Agency. Area A – Calculation of Capital Cost Allowance (CCA) Claim
- Corporations use Schedule 8 (T2SCH8) of the T2 return to calculate CCA, recapture, and terminal losses.8Canada Revenue Agency. T2SCH8 Capital Cost Allowance (CCA)
- Employees with eligible expenses claim CCA on Form T777 for qualifying assets like vehicles or musical instruments used in employment.
Records to Keep
Keep all records supporting CCA claims for at least six years from the end of the tax year they relate to.9Canada Revenue Agency. Where to Keep Your Records, for How Long and How to Request the Permission to Destroy Them Early That means purchase invoices showing acquisition cost, receipts for installation and setup, records of any government assistance received, and documentation of dispositions including sale price and date. If the CRA audits and you cannot produce records supporting the capital cost claimed, the agency can deny the deduction and reassess the affected years.