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Capital Gains Tax Estimator
UK, Germany & US Federal — 2025

Estimate capital gains tax on shares, property, and crypto for the UK, Germany, and the US. Netherlands and Belgium route to dedicated pages where this estimator should not be used.

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Capital Gains Tax by Country

Capital gains tax applies to the profit made when an asset is sold for more than its cost basis. The rule set is not harmonised. Rate structure, allowances, holding-period treatment, and special cases vary materially by jurisdiction.

Netherlands

The Netherlands generally does not tax realized gains on private investment portfolios through a classic CGT regime. Savings and investments are commonly taxed in Box 3 on a deemed-return basis, while substantial interests can fall into Box 2.

United Kingdom

The UK uses a capital gains framework with an annual exempt amount and two main rates for individuals. For 2025/26, the annual exempt amount is £3,000. Gains above that amount are charged at 18% or 24%, depending on how much of the basic-rate band remains after income.

Germany

Germany commonly applies a flat Abgeltungsteuer model to many financial assets. The simplified rate often used for quoted financial assets is 26,375% including Solidaritätszuschlag, after the annual allowance of €1.000 (single) or €2.000 (married). Separate rules apply for private property held more than 10 years (tax-free) and private crypto held more than 1 year (tax-free).

Belgium

Belgium should be handled with a dedicated engine because transition mechanics and asset-specific details make a generic estimator unreliable for the 2026 financial-asset gains regime.

United States

The US distinguishes between long-term and short-term capital gains. Long-term federal rates are typically 0%, 15%, or 20%, while short-term gains are taxed through the ordinary income bracket system progressively. This page models federal only and excludes state taxation.

CGT Rate Summary — 2025

CountryAssetShort-TermLong-TermAllowance
🇳🇱 NetherlandsPrivate portfolioNo classic CGTNo classic CGTBox 3 / Box 2
🇬🇧 United KingdomShares / property / crypto18% / 24%18% / 24%£3.000
🇩🇪 GermanyFinancial assets26,375% simplified26,375% simplified€1.000 / €2.000
🇩🇪 GermanyPrivate propertyNot modeled hereExempt >10 years
🇩🇪 GermanyPrivate cryptoNot modeled hereExempt >1 year€1.000
🇧🇪 BelgiumFinancial assetsDedicated page needed
🇺🇸 United StatesShares / property / cryptoOrdinary income brackets0% / 15% / 20%None federally

Frequently Asked Questions

Do Dutch investors pay capital gains tax on shares?+
Generally no. Private portfolios in the Netherlands are usually handled through Box 3, which taxes a deemed return on your total savings and investments rather than taxing realized gains on each sale. The Box 3 rate is 36% applied to fictitious returns (1,37% on savings and 5,88% on investments in 2025), not on the actual profit you made.
Why does the UK show 18% and 24% rather than one rate?+
Because the UK CGT rate for individuals depends on how much of the basic-rate band is still available after your taxable income. The first slice of gain that fits within the remaining band is charged at 18%. Any gain above that is charged at 24%. This means two taxpayers with identical gains can pay different amounts if their income levels differ.
Why are German short-term property and crypto not modeled here?+
Because they are not simple flat-rate cases. German short-term private property and crypto gains are taxed at your personal income tax rate, which is progressive and depends on your total income. Presenting them as a neat 26,375% figure would be incorrect. The calculator flags these cases and tells you to use a dedicated calculator or adviser.
Does the US estimate include state tax?+
No. This page estimates federal capital gains tax only. State rates vary significantly — California taxes capital gains as ordinary income at up to 13,3%, while states like Florida and Texas have no income tax. Add your state rate on top of the federal estimate shown here.
Why is Belgium redirected rather than calculated?+
Belgium introduced a 10% financial-asset gains tax from 1 January 2026, but the regime includes a step-up in cost basis to the 31 December 2025 valuation, interaction with the existing Reynders tax on bond funds, and transition rules that make a generic estimate unreliable. Belgium deserves its own dedicated calculator with these rules properly modeled.