Capital Gains on Property Sales (2026 Guide)

Capital gains tax is what turns a profitable property sale from a win into a calculation. Almost every tier-1 market taxes the profit when you sell, but the rates, exemptions, and the very definition of the taxable gain differ sharply between the US, UK, Canada, and Australia. This guide explains how the gain itself is computed — the part that is the same everywhere — then covers each market's rules with worked numbers, so you can estimate your own tax bill before you list.

How the gain is computed (the same everywhere)

The taxable gain is not simply the sale price minus the purchase price. It is the sale price minus your adjusted cost basis: the purchase price, plus capital improvements you made, plus selling costs like agent commission and legal fees, plus (in many markets) stamp duty or transfer taxes paid at purchase. Repairs count differently from improvements — replacing a roof is an improvement that adds to basis; repainting is a repair that does not — so the quality of your records directly changes your tax bill.

A worked example: buy a property for $300,000, spend $40,000 on a kitchen and bathroom renovation, and sell for $450,000 with $27,000 of agent and legal costs. Your basis is $300,000 plus $40,000 plus $27,000, or $367,000, so the gain is $83,000 — not the $150,000 that a casual subtraction of prices would suggest. The Capital Gain Calculator does exactly this arithmetic, and the Property Appreciation Calculator shows the price side of the same trade.

United States: the primary-residence exclusion

The US is generous with owner-occupied homes. If you lived in the property for two of the five years before the sale, the first $250,000 of gain is tax-free — $500,000 for married couples filing jointly. The exclusion is per sale, not per lifetime, so a homeowner who moves every few years can bank a quarter-million of tax-free gain each time. Sales of investment or rental properties do not qualify: they are taxed at long-term capital gains rates of 0, 15, or 20 percent depending on income, plus the 3.8 percent Net Investment Income Tax above $200,000 for singles ($250,000 married).

Investors have one more tool: the 1031 exchange, which defers the tax when the proceeds of a sale are reinvested into a like-kind property through a qualified intermediary within 45/180-day windows. Deferral is not forgiveness — the basis carries over and the tax comes due when the last property in the chain is sold without another exchange — but it is how large US landlords compound without paying tax at each step. The ROI Calculator helps you compare the after-tax economics of holding versus exchanging.

United Kingdom: residential rates and the £3,000 exemption

The UK taxes capital gains on second homes and investment properties at 18 percent for basic-rate taxpayers and 24 percent for higher-rate taxpayers on residential property (2025-26 rates), with a separate and lower schedule for commercial. The annual exempt amount is £3,000 per person, and reporting is different from income tax: the sale must be reported and the tax paid within 60 days of completion, not at the end of the tax year.

Your main home is protected by Private Residence Relief, which exempts the gain on a property that has been your only or main residence throughout ownership. Partial relief applies when the property was your home for only part of the period, and letting relief can reduce the bill further when part of a former main residence was rented out. The stamp duty you paid at purchase and the estate agent's fee at sale both reduce the gain, exactly as in the US example.

Canada: the inclusion rate and the principal residence exemption

Canada does not have a separate capital gains tax rate — it taxes half of the gain as income. For gains up to $250,000 in a year, 50 percent of the gain is included in taxable income; for the portion above $250,000, the inclusion rate rose to 66.7 percent under the 2024 federal budget, and the effective tax therefore depends on your marginal income tax rate. The principal residence exemption remains the big shelter: a properly designated principal residence can exempt the entire gain, and the rules allow one home per family unit per year.

The practical consequence: a Canadian investor who buys a rental property, holds it, and sells realizes a real tax bill, while the same gain on a designated principal residence is usually zero. Investors who have lived in a rental at some point should weigh the principal residence designation carefully — once designated for a period, that period is protected, and the tax planning around which property to designate is genuinely worth professional advice. The Capital Gain Calculator models the taxable gain before the inclusion rate is applied.

Australia: the 50 percent discount

Australia taxes capital gains at your marginal income tax rate on the taxable portion, but individuals who hold a property for more than 12 months receive a 50 percent discount on the gain — only half of it is included in taxable income. The main residence exemption exempts the family home entirely in most cases, and there is no tax on the family home even with the discount structure. For investors, the discount is the single most important number: it halves the tax bill on any gain realized after a 12-month hold, which is why Australian property investors talk about holding periods in years, not months.

Companies and some trusts do not qualify for the discount, and the discount applies to the gain itself, not the tax — a $100,000 gain by an individual after 12 months is taxed on $50,000. Superannuation funds get a separate two-thirds discount. As with every market here, selling costs and capital improvements reduce the gain first, so the discount applies to a smaller number than the raw price appreciation.

Depreciation recapture (US and UK angles)

For US investors, depreciation is the silent third rail of the capital gains calculation. A rental property's building value is depreciated over 27.5 years, which reduces taxable income every year you hold it — but the depreciation you claimed (or could have claimed) is recaptured at sale. The recaptured portion is taxed at a flat 25 percent, on top of the 15 or 20 percent long-term rate applied to the remaining gain. The practical effect: the longer you hold a rental and claim depreciation, the larger the recapture bill at the exit, and the 1031 exchange becomes valuable precisely because it defers both the gain and the recapture together.

The UK has no separate depreciation recapture for residential landlords — the tax is simply the capital gain at the residential rate — but it has the mirror-image trap in reverse: renovation costs that are claimed as revenue expenses reduce your basis for capital gains purposes. The discipline in both markets is identical: track capital improvements separately from repairs from the day of purchase, because the tax office applies the distinction at sale, not at the time you spend the money. The Capital Gain Calculator accepts the improvement total as an input so the basis is right before any rate applies.

Inherited property: the stepped-up basis

Inherited property follows different rules in every market, and the differences are large. The US applies a step-up in basis: the heir's basis is the fair market value at the date of death, so decades of appreciation are never taxed. Canada applies a deemed disposition at death — the estate is treated as if the property were sold at fair market value, which can trigger a real capital gains bill, though the principal residence exemption often protects the family home. The UK uses the probate value as the basis for inheritance tax purposes with no step-up for capital gains, and Australia applies a different regime where the family home inherited by a spouse or the main residence can pass free of CGT but investment property inherited after a death triggers complex rules.

The lesson for estate planning is that the same family home produces very different sale outcomes depending on the country. None of this is a reason to avoid holding property — it is a reason to know which regime applies to your situation and to let the Capital Gain Calculator estimate the bill before the executor's deadline rather than after it.

Can you claim a capital loss on property?

Yes — in every one of the four markets, a realized loss on an investment property offsets capital gains and, where gains are insufficient, can offset other income within limits. The US allows losses to offset gains fully and up to $3,000 of ordinary income per year, carrying the remainder forward indefinitely. The UK allows losses against gains in the same or future years. Canada applies the inclusion rate in reverse: half of a loss is deductible (with the 2024 budget's asymmetry for larger amounts). Australia allows losses to offset gains with no expiry, though the 50 percent discount does not apply to losses.

The catch is that a loss must be realized — paper losses do nothing until the sale completes — and the loss calculation uses the same adjusted basis rules as a gain. Keep the same records you would for a profitable sale, because a loss is only as good as the basis arithmetic behind it. The Capital Gain Calculator handles negative gains the same way, so the loss is visible before you decide whether to sell at all.

Five legal ways to reduce the bill

• Hold past the qualifying period — the US two-of-five-years rule and Australia's 12-month discount both turn on the calendar
• Use the primary-residence exemptions before they are lost — the US $250,000 exclusion and UK Private Residence Relief apply per sale, so ordering matters
• Defer with a US 1031 exchange or a UK rollover into qualifying assets where available
• Add every legitimate improvement and selling cost to the basis — receipts from the purchase year onward
• Time the sale across tax years when a large gain would otherwise push you into a higher rate bracket

Each of these is legal, ordinary, and regularly missed. The most common mistake is the first one: selling at 11 months when the 12-month discount is a month away, or selling a US home after 1.9 years when the exclusion needs two. The ROI Calculator and Property Appreciation Calculator model the hold-versus-sell decision with the tax angle in mind, so the calendar becomes part of the trade rather than an afterthought.

Putting the same trade through all four markets

Take the $83,000 gain from the worked example and run it through each market. In the US, owner-occupied, it is entirely excluded; as an investment property at the 15 percent long-term rate plus the 3.8 percent NIIT for a high earner, it is roughly $15,600. In the UK, a higher-rate taxpayer pays 24 percent, about $19,900, before the £3,000 exempt amount. In Canada, at a 45 percent marginal rate on a $250,000-and-under gain, half the gain is included, giving about $18,700. In Australia, after a 12-month hold, the discount halves the included gain, and at a 40 percent marginal rate the bill is about $16,600.

The same profit, four different tax bills, one identical arithmetic. Note also that the timing of the sale can move these numbers more than any single rate: selling in a year when your income is lower can drop you below the rate threshold in the US, under the higher-rate band in the UK, or into a lower marginal bracket in Canada and Australia. A married couple splitting the sale across two tax years, or a seller who waits for a year with lower income, is doing ordinary tax planning, not avoidance. If you are close to a bracket boundary and the buyer is flexible, the calendar is a legitimate lever — price it with the Capital Gain Calculator in both years before you commit to a completion date.

The same profit, four different tax bills, one identical arithmetic. That is the case for computing the gain correctly before you sell — the Capital Gain Calculator handles the basis arithmetic, and the market pages for Canada, the UK, Australia, and the USA keep the buying-side costs that feed into your basis. Tax rules change every budget cycle, so treat these rates as a planning frame and confirm the current figures for your exact situation before you sign.