Capital Cost Allowance (CCA) in Canada: A Plain Guide
Capital cost allowance (CCA) is how a Canadian business deducts the cost of a lasting asset, a laptop, a work van, office furniture, over several years instead of all at once. You cannot write off a $2,000 laptop the same way you write off a box of printer paper. The paper is gone this year; the laptop earns income for years, so the Canada Revenue Agency spreads its cost across those years as CCA. This guide explains how it works, the classes and rates, and the math.
What is capital cost allowance?
CCA is the tax version of depreciation. When you buy something that keeps its usefulness beyond the current year, the CRA calls it a depreciable property and treats the purchase as a capital cost rather than an ordinary expense. You do not deduct the whole price in the year you buy it. Instead, you deduct a percentage of the remaining value each year until the cost is used up.
Two terms carry the whole system. Capital cost is what you paid for the asset, including GST/HST you cannot recover and delivery or installation charges. Undepreciated capital cost (UCC) is what is left to deduct: the capital cost minus every CCA claim you have taken so far. Each year's CCA comes off the UCC, and next year you calculate the deduction on the smaller balance that remains.
One point trips up new business owners: your own accounting depreciation does not matter to the CRA. If your bookkeeping software writes the laptop down over five years on a straight line, that entry is not deductible. The only depreciation the CRA accepts is CCA, calculated its way, at its rates.
Current expense or capital expense: the fork that decides everything
Before CCA ever enters the picture, you sort each purchase into one of two buckets. A current expense is consumed within about a year, recurs, and keeps the business running as it is: rent, your phone bill, supplies, software subscriptions, repairs that keep an asset in its existing condition. You deduct current expenses in full the year you incur them.
A capital expense buys a lasting benefit or a new asset: a vehicle, a computer, machinery, a building, or an improvement that betters a property beyond its original condition. Capital expenses are deducted through CCA. The CRA lists the tests it uses, does the outlay provide a lasting benefit, is it for a separate asset or just a repair, how does the cost compare to the value of the property, on its current or capital expenses page.
Get this fork wrong and you either overstate this year's deduction (claiming a capital asset as a current expense) or delay a deduction you were entitled to take faster. Our guide to CRA business expense categories walks the everyday current expenses; everything that fails the current-expense test lands in a CCA class.
The common CCA classes and rates
Every depreciable property belongs to a class, and the class sets the rate. These are the classes a typical small business or sole proprietor meets, with their rates from the CRA's CCA classes list:
| Class | Rate | What it holds |
|---|---|---|
| 1 | 4% | Buildings acquired after 1987 |
| 8 | 20% | Furniture, fixtures, tools $500+, equipment not named in another class |
| 10 | 30% | Motor vehicles and passenger vehicles at or under the year's cost ceiling |
| 10.1 | 30% | A passenger vehicle that cost more than the ceiling ($39,000 before tax for 2026) |
| 12 | 100% | Tools, instruments, and kitchenware costing under $500; certain software |
| 13 | straight line | Leasehold improvements, written off over the lease term |
| 14.1 | 5% | Purchased goodwill and other intangibles acquired after 2016 |
| 50 | 55% | Computers, tablets, and systems software |
The rate is a declining-balance percentage, not a share of the original price, except Class 13, which is straight line over the lease. So a Class 8 desk depreciates at 20% of its shrinking UCC each year, and a Class 50 laptop at a fast 55%. The higher the class rate, the sooner the cost clears.
Class 10.1 is the odd one. A passenger vehicle that cost more than the ceiling goes in its own separate Class 10.1, and the cost you can depreciate is capped at that ceiling regardless of what you paid. For 2026 the ceiling is $39,000 before GST/HST, up from $38,000 in 2025. The vehicle expenses guide covers how the business-use share and the class ceiling interact.
How the math works: declining balance and the half-year rule
Say you buy $10,000 of office furniture. Furniture is Class 8 at 20%. If you could claim the full rate in year one, that would be $2,000. But a long-standing rule, the half-year rule, lets you claim CCA on only half of a net addition in the year you buy it. So year one is calculated as if you added $5,000, giving $1,000.
After year one the half-year rule is done and you work on the full UCC:
| Year | UCC at start | Rate | CCA claimed | UCC at end |
|---|---|---|---|---|
| 1 | $10,000 | 20% (half-year) | $1,000 | $9,000 |
| 2 | $9,000 | 20% | $1,800 | $7,200 |
| 3 | $7,200 | 20% | $1,440 | $5,760 |
Notice the deduction rises from year one to year two (the half-year rule ends) and then falls every year after, because 20% of a shrinking balance is a shrinking number. On a declining balance the UCC shrinks toward zero without reaching it. The CRA sets out this method on its how to calculate CCA page.
The first-year boost: the reaccelerated investment incentive
For assets you buy today, the half-year rule is on hold. Bill C-15, the Budget 2025 Implementation Act, received Royal Assent on March 26, 2026 and reinstated an accelerated first-year write-off, the reaccelerated investment incentive (RIIP). For most depreciable property acquired on or after January 1, 2025 and available for use before 2030, the half-year rule is suspended and the first-year deduction is 1.5 times the normal full-rate amount.
Run the same $10,000 of Class 8 furniture through it. Normal full rate is $2,000; the RIIP first-year claim is 1.5 × $2,000 = $3,000, three times what the plain half-year rule would have allowed:
| Year | UCC at start | CCA claimed | UCC at end |
|---|---|---|---|
| 1 | $10,000 | $3,000 (RIIP) | $7,000 |
| 2 | $7,000 | $1,400 | $5,600 |
The boost applies to most classes but not all, computers in Class 50, for example, follow their own enhanced schedule, and the incentive phases down for property available for use after 2029 before ending after 2033. The mechanics come from the CRA's accelerated investment incentive page. The practical takeaway: buy the asset and have it ready for use before year-end and you pull a larger deduction into year one.
You do not have to claim the maximum
CCA is discretionary. You can claim any amount from zero up to the year's maximum, and whatever you skip stays in the UCC pool for future years. This is a planning lever, not a loophole. In a year when your income is already below the basic personal amount, claiming CCA wastes a deduction against tax you were not going to pay. Skip it, keep the UCC high, and claim more in a later year when your income, and your marginal rate, are higher. The CRA confirms you are not required to take the maximum in its T4002 guide, Chapter 4.
What happens when you sell the asset
CCA is a running estimate, and selling settles the account. When you dispose of an asset, you compare the proceeds (capped at the original cost) against the UCC of its class:
- Terminal loss. If you sell the last asset in a class for less than the UCC, the leftover UCC becomes an extra deduction that year. You under-claimed CCA over the years, and the terminal loss trues it up.
- Recapture. If the sale drops the class UCC below zero, meaning you claimed more CCA than the asset lost in value, the negative amount is added back to your income as recaptured CCA. You over-claimed, and recapture claws it back.
Class 10.1 vehicles are the exception: they are exempt from both recapture and terminal loss, one reason each expensive vehicle sits in its own class. Both recapture and terminal loss are calculated in Area A of Form T2125, and the net CCA claim lands on line 9936. Our Form T2125 guide shows where that fits on the return.
Common misconceptions
"I can write off my new laptop this year." Not in full. A computer is Class 50 at 55% declining balance, so most of its cost is deducted over the first two or three years, not all in year one, though current first-year incentives front-load a large share. Only small items, tools and instruments under $500, sit in Class 12 at 100%.
"CCA is mandatory, so I should always claim the maximum." Neither is true. Claiming is optional, and the maximum is not the smart figure every year. Match your CCA to a year when the deduction reduces tax.
"Depreciation in my accounting software is my tax deduction." Book depreciation and CCA are separate systems. Only CCA, at the CRA's classes and rates, is deductible on your return.
Frequently asked questions
Do I have to claim CCA every year? No. CCA is discretionary. You may claim any amount from zero to the maximum, and unclaimed amounts stay in the UCC pool to deduct in a later year.
Is CCA the same as depreciation? CCA is the tax equivalent of depreciation. Your own accounting depreciation is not deductible; you deduct CCA calculated at the CRA's rates instead.
Where do I claim CCA on my tax return? Sole proprietors calculate CCA in Area A of Form T2125 and enter the total on line 9936. The net business income then flows to line 13500 of your T1.
Can I claim CCA on a vehicle I use for both business and personal trips? Yes, but only on the business-use portion. If 40% of your kilometres are for business, you claim 40% of the vehicle's CCA. Keep a mileage log to support the split.
Should I claim CCA on a home office I own? You can, but many owners choose not to. Claiming CCA on part of your home can jeopardize the principal residence exemption when you sell, so weigh the yearly deduction against the future capital gain.
Key takeaways
- CCA is how you deduct the cost of lasting business assets over time; current expenses are deducted in full the year you incur them.
- The class sets the rate, and most classes use declining balance, so the deduction shrinks each year as the UCC falls.
- The half-year rule normally halves year one, but the reaccelerated investment incentive suspends it for assets acquired from 2025 and available for use before 2030, paying 1.5 times the normal first-year amount.
- CCA is optional: claim any amount from zero to the maximum and carry the rest forward to a higher-income year.
- Selling an asset can trigger recapture (extra income) or a terminal loss (extra deduction); Class 10.1 vehicles are exempt from both.
The record behind every CCA claim is the invoice and proof of payment for the asset, and the CRA expects you to keep it for six years. SparkReceipt captures and categorizes those purchase records automatically, so when it is time to build your CCA schedule the cost of each asset is already logged and its receipt is attached. See how record retention works for what to keep, or get started with a free trial.