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Capital Gains Tax Calculator: France & Quebec

Estimate the tax owed on a crypto capital gain under French rules (flat tax or progressive brackets with family quotient) or Quebec rules (combined federal and provincial brackets, with Quebec's 50% inclusion rate).

Open the live calculator → Opens the “Taxes” tab on moneyprinter.uk directly
Preview · example scenario
Amount invested
€10,000
Amount at cash-out
€25,000
Capital gain realized
€15,000

This amount, the difference between the sale price and the purchase price, is the base used to calculate the tax.

Estimated tax

Depends on the country chosen (France or Quebec), and for France, on the regime elected (flat tax or progressive brackets) as well as other household income and the family quotient. The exact figure, based on rates checked and dated, shows up in the live calculator.

Illustrative example using the calculator's default values

How it works

In France, a private individual’s crypto capital gain is in principle subject to the 31.4% flat tax (Prélèvement Forfaitaire Unique): 12.8% income tax plus 18.6% social charges. The household may elect the progressive income-tax scale through box 3CN. This election is express, global and irrevocable for all household crypto gains for the year, and is independent from the 2OP election for dividends and securities. The calculator compares both regimes by stacking the gain on top of your other income, but it does not model the low-income rebate, exceptional high-income contribution or the statutory cap on the family-quotient benefit.

In Quebec, only half of the capital gain is included in taxable income. That amount is then added to other declared income and follows the progressive brackets, federal then provincial, applied one after the other on the same income ranges.

Note: this calculator is an educational simulator built with rates checked by hand and dated, not pulled live from a tax authority. Rules change often and vary a lot by personal situation. It is a starting point, not a final figure to file. On a partial crypto disposal in France, the taxable gain is not necessarily “sale minus purchase”: calculate it using Form 2086 or its official portfolio formula before entering the gain.

What about inflation?

Neither France nor Quebec adjusts a capital gain for inflation before taxing it. The calculation is based on the nominal gain, the difference between the sale price and the purchase price in current euros or dollars, with no correction for the currency's loss of purchasing power between the two dates. In practice, if part of the price increase is only tracking inflation or monetary dilution over the period, it's still counted as a taxable gain, even though the real purchasing-power gain is smaller than the number shown. That's exactly what the purchasing power calculator lets you check separately.

Frequently asked questions

How is a crypto capital gain taxed in France?

By default at the 31.4% flat tax (12.8% income tax + 18.6% social charges). The household may elect the progressive income-tax scale through box 3CN. This election is express, global and irrevocable for all crypto gains for the year, and independent from box 2OP. Which regime is more favorable depends notably on other income and the family quotient.

How is a capital gain taxed in Quebec?

Only half of the capital gain is included in taxable income, then taxed under the combined progressive federal and provincial brackets.

Does the tax account for inflation on the gain?

No, neither in France nor in Quebec. The tax applies to the nominal gain, with no adjustment for inflation or monetary dilution over the holding period. Part of the taxed gain can be a monetary illusion rather than a real gain.

Does this replace professional tax advice?

No. It's a starting point to understand the order of magnitude, based on rates checked by hand, not a final figure to file.

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