How much capital gains tax could you pay in Portugal?
The Finorum Portugal Capital Gains Tax Calculator estimates the tax payable when an individual sells shares, securities, cryptocurrency or real estate.
Select the relevant asset, enter the purchase price, sale price and eligible transaction costs, and the calculator will estimate your taxable gain, potential tax liability and net profit after tax.
Portugal applies different rules to financial investments, crypto assets and property. The final result may depend on the holding period, total annual taxable income, tax residence and whether a property was used as the taxpayer’s main home.
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How Capital Gains Tax Works in Portugal
Capital gains earned by individuals generally fall within Category G of Portuguese personal income tax, known as Imposto sobre o Rendimento das Pessoas Singulares, or IRS.
The basic calculation is:
Capital gain = Sale proceeds − Acquisition cost − Eligible expenses
Eligible expenses may include documented acquisition and disposal costs, broker commissions and certain costs that directly increased the value of an asset.
The applicable tax treatment then depends on the asset category. A 28% autonomous rate commonly applies to financial investments and taxable crypto gains. Property gains are treated differently: normally only part of the gain is included in taxable income and taxed at the progressive IRS rates.
Capital Gains on Shares and Securities
For Portuguese tax residents, the positive annual balance between gains and losses from shares and most other securities is generally subject to a flat 28% tax rate.
Taxpayers may usually choose to aggregate the result with their other taxable income instead. If aggregation is selected, the gain is taxed under the progressive Portuguese income-tax bands. This may be beneficial when the taxpayer’s applicable marginal rate is below 28%, but the complete effect should be assessed before making the election.
The basic calculation is:
Net financial gain = Total eligible gains − Total eligible losses
Estimated tax = Taxable net financial gain × 28%
The annual result is normally reported in the Portuguese Modelo 3 IRS return, usually through Annex G or the relevant annex for foreign income.
Mandatory Aggregation for Short-Term Gains
Aggregation is not always optional.
Gains from securities held for fewer than 365 days must generally be aggregated with other income when the taxpayer’s taxable income, including the relevant gain, reaches the highest Portuguese IRS bracket.
For 2026, the highest bracket begins above €86,634 of taxable income. Once the mandatory aggregation rule applies, the short-term gain is taxed at the progressive rates rather than the standard autonomous 28% rate. The top marginal rate is 48%, before any applicable solidarity surcharge.
This rule can produce a substantially higher tax liability for high-income taxpayers making short-term investments. A simple calculator using only the 28% rate may therefore understate the final tax unless the taxpayer’s total annual income is considered.
Long-Term Relief for Listed Securities
Portugal provides partial exclusions for qualifying listed securities and units in open-ended investment funds based on the holding period.
For eligible investments:
- 10% of the gain is excluded when the asset was held for more than two years but fewer than five years;
- 20% is excluded when the asset was held for at least five years but fewer than eight years;
- 30% is excluded when the asset was held for at least eight years.
This means that 90%, 80% or 70% of the relevant net gain remains taxable, depending on the holding period.
The relief does not automatically apply to every private-company interest or financial product. The security must fall within the categories specified by Portuguese law. Investors should confirm that the asset is admitted to trading or otherwise qualifies before applying the reduction.
Micro and Small Unlisted Companies
A separate incentive may apply to gains from shares in qualifying unlisted micro or small companies.
When the statutory conditions are met, only 50% of the positive gain is generally considered for Portuguese tax purposes. The company must satisfy the legal definition of a micro or small enterprise, and the shares must not be listed on a regulated or unregulated stock market.
This benefit should not be selected solely because a company is privately owned. Its size and legal status must be verified.
Costs and Losses on Financial Investments
The acquisition price and necessary, documented expenses directly connected to purchasing and selling the securities can generally reduce the taxable gain. These may include brokerage and transaction commissions.
Portuguese rules normally calculate a net annual balance between compatible gains and losses. Losses involving a counterparty located in a listed low-tax jurisdiction may be excluded.
A negative balance may generally be carried forward for five years when the taxpayer elects to aggregate the relevant income. Loss carry-forwards cannot automatically be used against salary, rental income or unrelated income categories.
Investors using several brokers should retain complete transaction records, including acquisition dates. Portuguese tax rules generally apply the FIFO principle—first in, first out—to securities of the same type and carrying identical rights.
Cryptocurrency Tax in Portugal
Portugal no longer provides a universal exemption for cryptocurrency gains. The treatment depends principally on the type of crypto asset, the holding period and the nature of the transaction.
For a private investor, a taxable gain on qualifying crypto assets held for fewer than 365 days is generally subject to the 28% autonomous rate. The taxpayer may be able to elect aggregation with other income.
The gain is calculated as:
Taxable crypto gain = Disposal value − Acquisition cost − Eligible transaction expenses
Crypto assets acquired first are generally treated as disposed of first under the FIFO method. When crypto is held through several service providers, FIFO is usually applied separately to each provider.
The 365-Day Cryptocurrency Exemption
Gains from qualifying crypto assets that do not constitute securities are generally excluded from taxation when the assets have been held for at least 365 days.
The holding period for crypto assets acquired before 1 January 2023 is also taken into account.
However, the exemption is subject to geographical and information-exchange conditions. It may not apply when a transaction involves a person or entity resident outside the EU, EEA or a jurisdiction that has an applicable double-taxation or tax-information-exchange arrangement with Portugal.
Crypto assets that legally qualify as securities do not benefit automatically from the ordinary 365-day crypto exemption. Their treatment may instead follow the rules applicable to securities.
Crypto-to-Crypto Transactions
When one qualifying crypto asset is exchanged directly for another, Portuguese law generally defers taxation at that point.
The crypto asset received inherits the acquisition value of the asset transferred. The gain is normally recognised later when the asset is exchanged for money, goods, services or another form of non-crypto consideration.
The records must preserve the original cost basis and acquisition history throughout the sequence of exchanges. Without reliable records, calculating the eventual taxable gain may become difficult.
Cryptocurrency Losses
Eligible crypto gains and losses are included in the Category G annual calculation. If the taxpayer elects aggregation, qualifying losses may generally be carried forward for five years.
Losses involving counterparties in jurisdictions considered to have a clearly more favourable tax regime may not be recognised.
Mining, professional trading, issuing crypto assets and other commercial activities can fall under Category B business or professional income rather than the private capital-gains regime. The calculator assumes an occasional private investor unless another option is selected.
Capital Gains on Property in Portugal
The treatment of property gains differs from that of shares and cryptocurrency.
For a Portuguese tax resident, generally only 50% of the net property gain is included in taxable income. That amount is then aggregated with the taxpayer’s other income and taxed at the progressive IRS rates.
The calculation is broadly:
Net property gain = Sale value − Adjusted acquisition value − Eligible expenses
Taxable amount = 50% of the net property gain
The applicable tax cannot therefore be determined accurately using a single flat percentage. It depends on the taxpayer’s other income and progressive tax bracket.
For 2026, Portugal’s general IRS rates range from 12.5% to 48%. Higher-income taxpayers may also be subject to the additional solidarity surcharge.
Special rules apply to nonresidents. Their position may depend on Portuguese domestic law, EU or EEA status, worldwide income information and an applicable double-taxation agreement.
Adjusting the Property Acquisition Cost
When a property has been owned for more than two years, its acquisition value may generally be adjusted using official monetary correction coefficients.
This inflation adjustment can reduce the taxable capital gain. The applicable coefficient depends on the year in which the property was acquired and the year of disposal.
Eligible deductions may also include:
- estate-agent commissions connected with the sale;
- notarial and registration costs;
- property transfer tax and stamp duty paid on acquisition;
- energy certification and other necessary sale expenses;
- documented improvement and renovation expenditure permitted by law.
Invoices and proof of payment should be retained. Ordinary maintenance or undocumented personal expenditure may not qualify.
Main-Home Reinvestment Relief
A gain from selling a taxpayer’s own permanent home may be fully or partially excluded when the qualifying sale proceeds are reinvested in another permanent home.
Under the current rules, reinvestment may generally occur:
- during the 24 months before the sale; or
- within 36 months after the sale.
The replacement property may generally be located in Portugal or another EU or EEA country that exchanges tax information with Portugal.
The sold property must ordinarily have served as the taxpayer’s or household’s permanent home, supported by the registered tax address, during the 12 months preceding the sale. Limited exceptions may apply for exceptional changes in household circumstances.
The amount considered for reinvestment is generally the sale proceeds after repayment of an eligible mortgage used to acquire the property.
When all qualifying proceeds are reinvested, the corresponding gain may be fully excluded. If only part is reinvested, the exemption is proportional:
Exempt gain = Gain × Qualifying amount reinvested ÷ Proceeds required for reinvestment
The taxpayer must declare the intention to reinvest in the IRS return for the year of sale and subsequently report the amount actually reinvested.
Relief for Retired Taxpayers and People Aged 65 or Over
An additional form of relief may be available when the taxpayer or their spouse or partner is retired or at least 65 years old.
Under qualifying conditions, proceeds from the sale of the permanent home may be invested within six months in specified products, including:
- certain life-insurance contracts;
- open pension funds;
- the Portuguese public capitalisation scheme;
- a Pan-European Personal Pension Product.
Detailed conditions apply, including rules concerning periodic payments from some products. Professional advice is appropriate before relying on this exemption.
Filing Capital Gains in Portugal
Capital gains are declared through Portugal’s annual Modelo 3 IRS return.
Depending on the transaction, the taxpayer may need:
- Annex G for taxable Portuguese capital gains;
- Annex G1 for certain non-taxable gains, including qualifying long-held crypto assets;
- Annex J for relevant foreign-source income or foreign accounts.
The standard filing period is generally from 1 April to 30 June of the year following the tax year.
Even when a gain is exempt, reporting may still be required. This is particularly important for the crypto holding-period exemption and property reinvestment relief.
Residents and International Investments
Portuguese tax residents are generally taxed on worldwide income. Shares held through a foreign broker, crypto assets held with an overseas platform and property situated abroad may therefore require disclosure in Portugal.
Foreign tax paid may qualify for a tax credit under Portuguese law and the relevant double-taxation agreement. The available credit is subject to statutory limits and may not equal the full amount paid abroad.
Nonresidents are generally taxed only on Portuguese-source gains, subject to domestic exemptions and tax treaties. Portuguese property and shares in property-rich Portuguese entities may remain taxable in Portugal.
Calculator Assumptions
Unless stated otherwise, the calculator assumes that:
- the seller is an individual;
- the asset is held privately and outside a business;
- the user is a Portuguese tax resident;
- all entered costs are documented and deductible;
- financial gains qualify for the standard 28% treatment;
- mandatory aggregation does not apply unless total income is entered;
- the asset is not connected with a listed low-tax jurisdiction;
- no transitional or special tax-residence regime applies;
- treaty relief and foreign tax credits are calculated separately.
Important Notice
The Portugal Capital Gains Tax Calculator provides an estimate for informational purposes only. The final liability may differ because of total annual income, holding periods, tax residence, asset classification, available losses, property reinvestment and international tax treaties.
For an official calculation or a significant transaction, consult a qualified Portuguese tax adviser or review the guidance published by the Portuguese Tax and Customs Authority. The official IRS Code confirms the 28% special rate and mandatory aggregation rules, while Article 43 sets out the 50% property inclusion and long-term securities relief.
Portugal Capital Gains Tax Calculator
Matias Buće has a formal background in administrative law and more than ten years of experience studying global markets, forex trading, and personal finance. His legal training shapes his approach to investing — with a focus on regulation, structure, and risk management. At Finorum, he writes about a broad range of financial topics, from European ETFs to practical personal finance strategies for everyday investors.