Quick Answer: At the defaults on this page -- C$750,000 of proceeds, a C$450,000 adjusted cost base, C$30,000 of selling costs, no principal residence designation, a 29% federal marginal rate and a 14% provincial rate -- the total tax on the disposition is C$58,050.00. The capital gain is C$270,000, of which Income Tax Act s. 38(a) includes exactly half, so C$135,000 enters income and attracts C$39,150.00 of federal and C$18,900.00 of provincial tax. That is an effective 21.50% on the whole gain, against C$116,100.00 if the gain were fully taxable. All figures are in Canadian dollars.
Overview
Canada has no separate capital gains tax. There is no special rate, no separate return and no holding-period test. What exists instead is an inclusion rate: Income Tax Act s. 38(a) provides that "a taxpayer's taxable capital gain ... is 1/2 of the taxpayer's capital gain", and that taxable half is simply added to your ordinary income and taxed at whatever marginal rates then apply.
That structure has two consequences people routinely get wrong. The first is that your effective rate on a capital gain is always about half your marginal rate, not a fixed number, so it rises with your other income. The second is that a large gain can push you into a higher bracket for the year, meaning the last slice of the taxable half costs more than the first.
Two provisions can remove the gain entirely. Section 40(2)(b) shelters a gain on a property designated as your principal residence, in proportion to the years designated. Section 38(a.1) sets the taxable capital gain at nil for a gift of publicly listed securities or an ecological gift to a qualified donee, which is why donating shares in kind beats selling them and donating the cash.
How This Is Calculated
Step 1 -- the capital gain. Proceeds less adjusted cost base less the costs of disposing, under s. 40(1)(a):
Step 2 -- the principal residence exemption. The share of the gain you designate is removed:
Step 3 -- apply the s. 38(a) inclusion rate. One half, unless s. 38(a.1) applies to a qualifying gift, in which case the rate is nil:
Step 4 -- net allowable capital losses. Losses carried forward reduce the taxable half, never the gain itself and never other income, which is the s. 111(1)(b) restriction:
Step 5 -- tax it at ordinary marginal rates. Federal and provincial rates you supply are applied to the net taxable capital gain and added together.
Worked Example
Using the page defaults: C$750,000 proceeds, C$450,000 adjusted cost base, C$30,000 of commission and legal fees, no principal residence designation, a 29% federal rate and a 14% provincial rate.
Step 1: subtract the adjusted cost base from proceeds. C$750,000 less C$450,000. C$300,000
Step 2: subtract the outlays and expenses of selling. C$300,000 less C$30,000. C$270,000
Step 3: apply the s. 38(a) one-half inclusion rate. Half of C$270,000. C$135,000
Step 4: federal tax on the taxable half. C$135,000 at 29%. C$39,150.00
Step 5: provincial tax on the taxable half. C$135,000 at 14%. C$18,900.00
Step 6: total tax. C$39,150.00 plus C$18,900.00. C$58,050.00
Step 7: net proceeds. C$750,000 less the C$30,000 of selling costs less the tax. C$661,950.00
The effective rate on the economic gain is C$58,050 divided by C$270,000, or 21.50%, which is exactly half the 43% combined marginal rate. If the same gain were fully included it would cost C$116,100.00, and that gap is what s. 38(a) is worth.
What This Does Not Account For
- Your marginal rates are inputs, and a large gain can change them. The taxable half is added to your other income, so a gain big enough to cross a bracket threshold is taxed partly at one rate and partly at the next. This page applies one federal rate and one provincial rate to the whole taxable amount, which understates the tax where the gain straddles a bracket.
- The federal bracket thresholds are indexed and were not verified. Section 117.1 re-values them annually and the Act does not state the result, which is why the page asks for a rate rather than deriving one from income.
- Provincial rates have no national value. Every province legislates its own schedule, and several add a surtax on top of the headline rate.
- The principal residence exemption is entered as a percentage, not derived. The s. 40(2)(b) formula turns on the number of years designated plus one, over the years owned, and on facts about which property was designated in which year. That is a factual determination this page cannot make for you.
- The alternative minimum tax is not modelled. A large capital gain is one of the most common triggers for AMT, particularly where a donation of securities has also removed the regular tax.
- No superficial loss rule, no attribution rules, no deemed dispositions on emigration or death, no capital gains reserve for proceeds received over several years, and no lifetime capital gains exemption for qualified small business corporation shares or qualified farm and fishing property.
- Foreign currency gains are not separated. A gain on a foreign-currency asset has to be computed in Canadian dollars at the exchange rates on the acquisition and disposition dates, and the currency movement itself forms part of the gain.
Common Pitfalls
- Guessing the adjusted cost base. This is the single most common error on a Canadian capital gain. The ACB includes the original purchase price, legal fees and land transfer tax on acquisition, and every capital improvement since. Records people no longer have are usually what makes the number wrong.
- Forgetting the outlays and expenses. Real estate commission alone is frequently four or five percent of the sale price. At the defaults here, the C$30,000 of selling costs is worth C$6,450 of tax.
- Thinking there is a special capital gains rate. There is not. There is an inclusion rate, and the included half is taxed like salary.
- Believing capital losses can shelter ordinary income. They cannot. An allowable capital loss offsets taxable capital gains only, though it can be carried back three years and forward indefinitely against those.
- Assuming any home sale is automatically tax-free. The principal residence exemption has to be claimed and the property designated, one property per family per year, and the sale has to be reported on your return whether or not tax results.
Frequently Asked Questions
What is the capital gains inclusion rate in Canada?
Is there a lower tax rate for capital gains?
Do I pay tax when I sell my home?
Is it better to donate shares or to sell them and donate the cash?
Can I use capital losses from previous years?
Sources
- Income Tax Act, R.S.C. 1985, c. 1 (5th Supp.), s. 38(a), the one-half inclusion rate, and s. 38(a.1), the nil inclusion for gifts of listed securities and ecological gifts to qualified donees. Justice Laws Website, read 2026-08-31; Act current to 2026-06-21, last amended 2026-06-18. https://laws-lois.justice.gc.ca/eng/acts/I-3.3/section-38.html
- Income Tax Act, s. 117(2), the five federal marginal rates that apply to the taxable capital gain once it enters income. Justice Laws Website, read 2026-08-31. https://laws-lois.justice.gc.ca/eng/acts/I-3.3/section-117.html
- Provincial and territorial marginal rates are set in each province's own legislation, have no national value, and were NOT verified in building this page. They are user inputs.