Capital Gains Tax Calculator

Capital gains are the profits made on the sale of an asset - that is, the portion of the selling price that exceeds the purchase price. Assets involved can include stocks, rental properties, certain cryptocurrencies and coin collections. Calculating the gain itself is simple, but tax treatment varies from country to country.

For this reason, this calculator offers two modes: automatic mode for the US with full federal tax brackets, and flat rate mode for other regions. In flat rate mode, you can enter your personal tax rate and some optional adjustments to reflect how capital gains taxes actually work in your home country.

How to use the calculator:

Regardless of the tax system chosen, the starting point is always the same. The acquisition value is the purchase price and the sales price is the price at which the asset was sold. The difference between these two values is the taxable profit.

From this point the calculator branches depending on which tax type is selected. In US mode, it asks for your tax bracket and income, and applies the 2025 cumulative long term capital gains brackets plus federal tax rates, taking into account net investment income tax. In flat rate mode, these details are not asked, instead a single capital gains tax rate is asked, and adjustments can be enabled to suit the situation in your home country.

Choosing the right mode:

Distinction between short-term and long-term

In the United States, the line between short-term and long-term holdings is one year plus one day. Short-term gains are taxed at the same rates as salary income, with a top rate of 37%. Long-term gains are taxed at lower rates of 0%, 15% or 20%. Because selling just a few days before this deadline can potentially save you nearly half your tax bill, it can be very costly to get it wrong. Other countries have different rules for long-term holdings. In Australia, profits after one year's holding are taxed at half the rate, while in Germany ten years of property ownership leads to exemption from certain taxes. The UK, on the other hand, has no tax benefits at all for longer holding periods. Long-term options reflect US tax rates and will take into account any long-term discounts entered in fixed-rate mode.

The 2025 tax rate for long-term capital gains in the US is.

The long-term tax rates depend not only on the amount of profit but also on the total taxable income. These thresholds apply to the 2025 tax year, i.e. for the return to be filed in early 2026.

Because regular income first fills the lower tax brackets, and then profits go above them, some of your profit may be taxed at 0% while other parts are taxed at 15%. Additionally, high earners pay a net investment tax of 3.8%. This is automatically added if your taxable income exceeds $200,000 for individuals or $250,000 for married couples.

Capital gains tax worldwide

If you are located outside the United States, switch to flat tax mode and use the following numbers as a starting point. These are nominal rates that have applied to individuals over the past few years. The actual values can vary depending on the type of asset, your country of residence, and annual exemption amount. Please check current regulations in your country.

Adaptable elements and countries where they are required:

• Exemption or non-taxable amount: The non-taxable amount that is deducted from the gains before taxation. Examples include the US home sale exclusion under section 121 (individuals: $250,000, joint return for married couples: $500,000), the UK annual allowance, and the principal private residence relief.

• Taxable portion or inclusion rate: The percentage of the gain that is taxable. In Canada, for example, 50% of the gain is included in taxable income. Set the appropriate values for your country.

• Long-term discount: A reduction in the taxable gain by a certain percentage for assets held over a sufficient period of time. For example, Australia offers a 50% discount after twelve months holding period.

• Surcharge or levy: A tax rate that is added to the basic tax rate. Examples include the French social levy and the German solidarity levy.

• State, provincial and cantonal taxes: Fixed additional tax rates that apply in U.S. states, Canadian provinces and Swiss cantons.

A concrete example:

You bought shares for $10,000 and sold them two years later for $18,000. You declare this in the US as an individual and your other income is $80,000.

The gain is $8,000, and since your income exceeds the threshold of $48,350, a tax rate of 15% will be applied to all gains

What's left is an amount of $6,800.. If you sell without meeting the holding period for a year, then normal tax rate of 22% will be applied to the same profit, which results in a tax burden of about $1,760. So the tax saving by long-term holding is about $560.

If the same process is done with a flat tax rate of 24%, the tax burden becomes about $1,920.. In Canada, there's an inclusion rate of 50% and marginal tax rate of 30, which results in a tax burden of about $1,200. When Australian long-term tax discount of 37% is applied, the tax burden becomes about $1,480.. This is a calculator that follows many countries' rules.

Methods to reduce tax burden.

Capital gains are only taxed on sale, so timing and planning is the most important tool for optimization, regardless of where you live.

• Hold assets for a long enough period to benefit from favorable long-term tax rules in the respective country.

• Offset losses: Loss positions can usually be offset against gains and in some countries it is also possible to carry forward remaining losses into future years.

• Use tax-advantaged accounts to shelter appreciation from capital gains taxes.

• Spread large sales over different tax years to lower income and tax rate.

• Make use of all your allowable allowances, from the home allowance to the annual tax-free personal allowance.