Undepreciated Capital Cost (UCC): What It Is and How It Works for Your Corporation

Your corporation sells a piece of equipment for $7,000. It cost $12,500. That's less than you paid, and yet your accountant says there's income to report. It isn't a mistake.

Undepreciated capital cost (UCC) is the tax balance of a class of property that your corporation can still deduct as capital cost allowance (CCA). It's the starting point of each year's CCA claim, and the benchmark your sale price gets measured against.

Read properly, it spares you unpleasant surprises. Misread, it turns an ordinary sale into an unexpected tax bill.

What is undepreciated capital cost (UCC)? Definition and purpose

Undepreciated capital cost (UCC) is the part of a depreciable property's cost that your corporation has not yet deducted for tax purposes, as capital cost allowance (CCA). It is a tax balance, not a market value or a book value, and it is tracked class by class. The more CCA deductions you claim, the lower it gets.

That balance has nothing to do with what the asset is worth today, or with what your financial statements say. It's a purely tax figure, and it follows its own rules.

UCC is calculated by class of property, not asset by asset. Every depreciable asset falls into one of the CCA classes, each with its own rate. Furniture and equipment in Class 8, for example, are depreciated at 20% of the balance.

The UCC does two jobs. First, it's the base of your CCA claim, because the class rate applies to this balance and never to the original cost. Second, it's the point of comparison when you sell. Measured against the price you get, it tells you whether the corporation reports income or can deduct a loss. The same balance therefore decides both the year's deduction and the outcome of a sale.

How do you calculate undepreciated capital cost (UCC), year after year?

The undepreciated capital cost formula fits on one line, and it applies to each class separately.

Opening UCC + additions − proceeds of disposition (capped at cost) − CCA = closing UCC

In this formula, the proceeds of disposition are the selling price, reduced by selling costs. They never exceed the original cost of the asset.

Take the equipment from the introduction, the only asset in its Class 8. It was bought for $12,500 and has already generated $2,500 of CCA, so its UCC is $10,000 at the start of year 1. Your corporation claims the maximum 20% each year.

The deduction seems to melt from one year to the next. If that surprises you, you're in good company, and it's perfectly normal. The rate applies to a shrinking balance, not to the original $12,500, which no longer plays a part in the calculation.

If the class holds several assets, the calculation runs on their total. Additions and sales of every asset in the class merge into a single UCC, and that one balance is the base of the CCA.

Classes, however, stay separate. A computer, generally in Class 50, and an office desk in Class 8 each have their own rate and UCC, even when bought the same day.

Your closing balance becomes the opening balance of the following year. That figure should therefore appear unchanged in the next return, and redoing this calculation is a good way to catch a gap before you file. What remains is knowing where to read that balance.

Does the half-year rule change the UCC of a new asset?

Yes, in the year of purchase. The half-year rule generally limits the first-year CCA to half of the normal amount, so the UCC of a new asset drops more slowly at the start.

Here's a separate example, unrelated to the equipment above. Your corporation buys $10,000 of Class 8 equipment during the year. Under the general rule, the CCA is 20% of half the cost, so $1,000, and the closing UCC is $9,000. From the following year, the full 20% applies to that balance.

Temporary federal incentives can suspend the half-year rule or speed up the first-year deduction for recent property. Confirm what applies to your purchase with the Canada Revenue Agency (CRA) or a tax professional before you count on the $1,000.

Where do you find the UCC on the T2 and the CO-17?

On the federal T2 return, filed with the CRA, the UCC of each class is worked out on Schedule 8 of the T2, the capital cost allowance table. Each row is one class.

To see where a given asset stands, find the row of its class in last year's return. The closing balance shown there is your starting point for the current year.

On the CO-17, the calculation is done on form CO-130.A, starting from the balance specific to Québec.

In Alberta, where corporations file the AT1, Schedule 8 also carries a separate column for the Alberta balance.

Why can the Québec UCC differ from the federal UCC?

The calculation follows the same logic, but each level of government keeps its own account. Québec and Ottawa therefore don't always measure the same balance.

Accelerated depreciation measures are a good example. They were introduced and adjusted at different times, and not always in the same way. An asset acquired during those periods can see its two balances drift apart, which simply reflects two distinct tax regimes.

The same equipment can show a federal UCC of $5,120 and a different Québec balance. There are two returns, so there are two accounts to keep up to date.

In practice, the recapture or terminal loss from a sale can also vary from one level to the other. Keep both balances side by side before you sell an asset.

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What happens to the UCC when your corporation sells a depreciable asset?

Let's go back to your $12,500 equipment, with its UCC of $5,120 at the end of year 3. It's the only asset in its class, and you sell it in year 4. Depending on the gap between the price and the UCC, the sale produces a CCA recapture, a terminal loss or a capital gain. Here are three selling prices.

CCA recapture

A recapture of CCA appears when the price exceeds the UCC. The CCA already deducted turned out to be too generous, and the excess is added to the corporation's income.

The calculation is simple. Selling price minus UCC gives the recapture. At $7,000, the $1,880 difference becomes income to report, even though the equipment sold for less than it cost. That's exactly the situation at the start of this article. The balance of the class then falls back to zero.

Buying property of the same class before the end of the fiscal year can reduce that recapture, or even wipe it out.

Terminal loss

A terminal loss in CCA is the reverse case. When the corporation disposes of every asset in a class and some UCC remains, that balance becomes a deduction.

At $3,000, $2,120 of UCC is left, so the terminal loss is the same amount. A terminal loss often shows up when you have to close an incorporated business and sell all its assets.

The class must be empty at the end of the fiscal year, though. If you buy an asset of the same class before year-end, the terminal loss disappears and the balance keeps being deducted over time.

Higher-cost passenger vehicles in Class 10.1 are, in general, an exception, since they don't produce a recapture or a terminal loss. That matters when you claim a business vehicle deduction.

Capital gain

If the price exceeds the original cost, a third notion comes into play. At $14,000, the recapture is capped at $7,380, which is $12,500 minus $5,120.

The remaining $1,500 is a capital gain, of which 50% is taxable, so $750 is added to income.

The non-taxable half of the gain is added to the corporation's capital dividend account (CDA). With the right election, that account lets the corporation pay certain dividends tax-free to its shareholders resident in Canada.

Do you have to claim the maximum CCA every year?

No. CCA is optional, and you can claim less than the maximum, or nothing at all. What you don't deduct stays in the UCC, available for later years.

With your equipment, skipping the CCA in year 2 would leave $8,000 of UCC at the start of year 3 instead of $6,400. The maximum deduction in year 3 would then be $1,600 instead of $1,280.

That flexibility is worth the most when the corporation's income is low one year and higher the next. Holding back the deduction lets you use it when it'll cut more tax. Claiming all of the CCA in a lean year can also, in general, create a loss, which the corporation carries over like any other tax loss. The right choice depends on the next few years of income.

It's hard to fix after the fact, though. In general, the CRA will only change the CCA you claimed within 90 days of the notice of assessment (the CRA's response to your filed return), with a few exceptions.

One balance to keep an eye on

The UCC is your assets' tax memory. Everything the corporation has deducted is recorded there, and a sale simply compares that balance with the price you got. Your equipment sold for $7,000 proves it. The $1,880 to report was no error, because the sale took back CCA that had already been deducted.

Understanding undepreciated capital cost comes down to two habits. Look at the class balance before you sell an asset. And check from one year to the next that it carries over unchanged, federally and in Québec.

If you want your corporation's UCC carried forward correctly from one year to the next, our tax accountants can prepare your T2 tax return online. We pick up the balance of each class from your previous return.

This information is provided for educational purposes and does not constitute personalized tax advice. Every situation is unique, and a CPA can review your specific case.

Frequently asked questions about UCC