Capital Cost Allowance in Canada: How Business Assets Are Actually Deducted

Buy a $2,000 laptop for your business and you cannot deduct $2,000 this year. You deduct a percentage of it, then a percentage of what is left, and so on for years. That mechanism is capital cost allowance, and it is the single most common source of confusion between what a business spent and what it can claim.
The logic is straightforward once stated: an expense is consumed in the year, an asset keeps producing value for years, so its cost is spread across the years it serves.
Expense or asset?
The first decision, and the one that matters most.
| Spent on | Treatment |
|---|---|
| Office supplies, software subscriptions, rent, phone | Expense, deduct in full |
| Repairs that keep an asset working as it did | Expense, deduct in full |
| Computer, vehicle, furniture, machinery | Asset, claim CCA |
| Improvements that extend life or increase capability | Asset, added to the class |
| A building | Asset, and the land under it is never depreciable |
The repair-versus-improvement line causes the most argument. Replacing a broken part restores the asset, so it is a repair. Replacing a component with a better one that makes the asset do more, or last materially longer, is a capital improvement. Fixing a roof leak is a repair; replacing the roof is not. Anything that lands on the repair side of that line is deducted under the ordinary rules for business expenses.
Capital cost is not the invoice price
The number you put into the class is usually larger than what the supplier charged, and getting it wrong understates every year’s claim thereafter.
Capital cost includes the purchase price plus the legal, accounting, engineering, installation and similar fees that relate to acquiring or constructing the property, and later additions or improvements you did not already expense. For a building it also picks up soft costs, meaning interest, legal and accounting fees and property taxes for the period you were constructing, renovating or altering it, where those were not deducted currently.
It runs the other way too. A grant, subsidy or rebate received on a depreciable property generally reduces its capital cost rather than being income on its own, so a rebated piece of equipment goes into the class net of the rebate. Claiming CCA on the gross cost and reporting the rebate as revenue is a common and detectable error.
Where a purchase covers both land and building, the fees are split between them in the same proportion as the values, because only the building side is depreciable.
Classes and rates
Assets go into classes, and each class has its own rate. A few you will actually meet:
| Class | Typical contents | Rate |
|---|---|---|
| 8 | Furniture, fixtures, equipment not listed elsewhere | 20% |
| 10 | Vehicles under the cost ceiling | 30% |
| 10.1 | Passenger vehicles above the ceiling | 30%, with limits |
| 12 | Tools and software under a cost threshold | 100% |
| 13 | Leasehold improvements | Over the lease term |
| 50 | Computers and systems software | 55% |
The full list is long and it changes, so work from the CRA’s classes of depreciable property for the year you are filing rather than a figure you remember. Zero-emission vehicles are the clearest example of why: they were given their own classes with their own ceilings, and what that means for a business buyer is in the future of electric vehicles to 2030.
Class 12 is worth knowing about. Certain tools and software qualify for a 100% rate, which means you effectively deduct them in full. Before you assume a purchase must be depreciated over years, check whether it belongs here.
Declining balance, which is why it never quite ends
Most classes use a declining balance. You claim the rate against the remaining balance, not the original cost.
A $10,000 Class 8 asset at 20%:
| Year | Opening balance | CCA claimed | Closing balance |
|---|---|---|---|
| 1 | $10,000 | $1,000 (half-year rule) | $9,000 |
| 2 | $9,000 | $1,800 | $7,200 |
| 3 | $7,200 | $1,440 | $5,760 |
| 4 | $5,760 | $1,152 | $4,608 |
The balance approaches zero without reaching it. That is normal.
The half-year rule
In the year you acquire an asset you may generally claim only half the normal rate, regardless of whether you bought it in January or December. That is the $1,000 rather than $2,000 in year one above.
Incentive programs have modified this at various points, sometimes substantially for the first year. Whether an enhanced first-year deduction is available to you depends on the asset type and the year, so confirm the current position rather than assuming either the plain half-year rule or an accelerated one.
A short year cuts the claim again
A separate reduction applies where the fiscal period itself is short, which is exactly the situation in a first year and a final year. Where the fiscal period is less than 365 days, the CCA claim is prorated by the number of days in the period over 365.
Both reductions can apply at once. An asset bought in a first fiscal period of seven months gets half the rate under the half-year rule and then roughly seven-twelfths of that. Owners who budget a first-year deduction from the class rate alone are usually planning around three or four times the number they will actually get.
CCA is optional, and that is a planning tool
You are not required to claim CCA, and you may claim any amount from zero up to the maximum.
That matters more than it sounds. If your business has a loss year, claiming CCA deepens a loss you may not be able to use, while the undepreciated balance carries forward indefinitely and stays available in a profitable year.
The general rule: claim CCA when it reduces tax at a rate worth having, and defer it when it does not. In a year where your income already sits in a low bracket, deferring is usually right.
Selling an asset: recapture and terminal loss
When you dispose of an asset, the proceeds come off the class balance, and one of two things happens.
Recapture. If the proceeds exceed the remaining balance in the class, you have claimed more depreciation than the asset actually lost. The excess is added back to income. This surprises people who sell a well-maintained vehicle for more than its book value.
Terminal loss. If the class is emptied and a balance remains, that balance is deductible in full.
Both are calculated at the class level, not per asset. Sell one of three Class 8 items and you simply reduce the class balance; there is no recapture until the class runs out.
Recapture can sometimes be deferred. Where a property is stolen, destroyed or expropriated, or where you sell a former business property and buy a similar one, the replacement property rules let you postpone the recapture and any capital gain, provided the replacement is acquired within the statutory time limit and used for the same or a similar purpose. It is an election with deadlines, so it has to be identified in the year of disposition rather than found later.
The place recapture cannot be avoided is a wind-up. Distributing equipment to yourself on closing the company is a disposition at fair market value, which is why it belongs early in the sequence for closing a corporation.
The ones people get wrong
Land. Never depreciable. When you buy a building you must split the purchase between land and building, and only the building gets CCA.
Vehicles above the cost ceiling. A vehicle over the prescribed limit goes into its own Class 10.1, is capped at the ceiling for CCA purposes, and gets no terminal loss on disposal. Combine this with the logbook requirements in vehicle expense deductions before buying an expensive car through the business.
Personal use. An asset used partly personally gets CCA on the business portion only.
Assets bought but not available for use. CCA generally starts when the asset is available for use, not when it is paid for. Equipment sitting in a crate does not depreciate yet.
Keep the schedule
The reason CCA goes wrong over a decade is not the arithmetic. It is that nobody maintained the schedule, so the opening balances are guesses by year six.
Keep a record per class showing additions, dispositions, CCA claimed and the closing balance, and reconcile it annually alongside the monthly close. Records must be kept for six years after the year they relate to, and longer for assets held that long.
If you have been expensing things that should have been capitalised, or the reverse, that is worth straightening out before it compounds another year.
