Capital Gains Tax on Commercial Property in Canada

1. Identify the taxpayer and transaction before calculating

Confirm the registered and beneficial owner, tax year-end, residency, partnership or corporate interests, transaction form, included assets, related parties and any proposed reorganization. A property sale, asset sale and share sale do not create the same taxpayer or reporting path.

Determine whether the property is capital property, inventory or part of an adventure or business. CRA states that a rental property held to earn rent is generally reported on capital account when sold, while property acquired or developed to sell can produce business income. Intention and facts matter.

• Legal and beneficial owner
• Capital property or business inventory
• Land, building and other assets
• Direct, partnership or corporate ownership
• Closing and tax year-end
• Canadian or non-resident taxpayer

2. Build the capital-gain bridge from source records

CRA's general capital-gain formula is proceeds of disposition minus adjusted cost base and outlays or expenses incurred to sell. That produces a capital gain or loss before applying the inclusion rate, available losses, exemptions, reserves or owner-specific tax rates.

Do not use original purchase price alone as adjusted cost base. Acquisition costs, capital additions, partial dispositions, grants, elections, changes in use and other adjustments can change the record.

3. Reconstruct adjusted cost base rather than estimate it

CRA describes adjusted cost base as generally the property's cost plus acquisition expenses such as commissions and legal fees, adjusted for relevant events. Capital additions and improvements can increase ACB; current maintenance and repair expenses cannot simply be added.

Reconcile the original agreement, closing ledger, allocation, invoices, contracts, capital-asset ledger, tax returns and supporting advice. Separate land, each building, equipment, leasehold improvements and other property by the tax categories used by the accountant.

4. Determine proceeds and sale expenses from the actual agreement

Map cash price, assumed liabilities, vendor financing, earnouts, holdbacks, included assets and adjustments. Identify which amounts are proceeds, separate obligations or timing differences under the selected tax treatment.

CRA says legal fees paid on a rental-property sale reduce proceeds when calculating the gain and also affect recapture or terminal-loss calculations. CRA identifies real-estate selling commissions as outlays and expenses on Schedule 3. Obtain transaction-specific advice for every other line.

5. Allocate land, building and other property supportably

CRA requires land and building to be reported separately when real estate includes both. Land is not depreciable property; buildings and other assets can be in CCA classes. The allocation therefore affects both capital gain and recapture.

The agreement's allocation is not immune from review. CRA's CCA folio explains that unreasonable allocations among property or services may be reallocated. Use appraisal, assessment, cost and transaction evidence selected with the advisors rather than moving value solely to obtain a preferred tax result.

6. Keep capital gain and CCA recapture separate

A depreciable building can produce both a capital gain and recapture of prior CCA. CRA states that recapture is included in income for the year; it is not merely another portion of the capital gain.

A low UCC balance does not mean the property's ACB is equally low, and debt balance is neither ACB nor UCC. Ask the accountant to show land gain, building gain, each CCA-class result and any terminal loss separately.

7. Verify the current inclusion rate and owner tax profile

Budget 2025 records the cancellation of the proposed increase in the capital-gains inclusion rate, Finance Canada's 2026 report states that the government decided not to proceed, and CRA's current corporate guidance continues to reflect the one-half rate. As of this guide's review date, the current federal inclusion rate is one-half, subject to the specific taxpayer and applicable law.

The inclusion rate is not the owner's tax rate. Tax payable depends on ownership, other income and losses, province of residence, corporate accounts, distributions, exemptions and other facts. Reconfirm current law immediately before relying on a sale model.

8. Model deferred consideration and reserves carefully

Vendor financing or deferred proceeds do not automatically defer the complete gain. CRA describes a possible capital-gains reserve for qualifying unpaid proceeds, subject to eligibility, calculation, annual inclusion and time limits.

Model price, cash timing, credit risk, security, interest, reserve eligibility and tax payments together. Counsel and the accountant should coordinate the agreement and reporting before a vendor-take-back structure is accepted.

9. Separate income tax from GST and seller cash

Capital gain, taxable capital gain, CCA recapture, GST on the property, GST on services and cash proceeds are different workstreams. Purchaser self-assessment of GST, where applicable, does not eliminate income-tax consequences.

Build a closing-cash bridge from lender payouts, costs, adjustments and holdbacks, then a separate accountant-supported tax bridge. Do not subtract debt from price and label the remainder a capital gain.

10. Update the estimate before offer, waiver and closing

Prepare a preliminary record-based estimate before marketing, refresh it for the selected offer and allocation, and replace assumptions with executed agreements, payout statements, invoices, elections and closing records.

This guide is general education, not tax, legal or accounting advice. It does not calculate a specific gain, recapture, reserve, filing obligation, inclusion rate, exemption or tax payable.