Crypto Tax in Portugal 2026: 28% Rate, Forms & Deadlines

Taxation of cryptocurrencies in Portugal

In Portugal, capital gains on cryptocurrencies are subject to tax. The calculation method used is FIFO with a rate of 28%. Understanding these rules is essential to stay compliant with tax legislation.

The FIFO method explained in detail

The FIFO (First-In-First-Out) method matches each sale with the oldest lots still held: the gain is the difference between the sale price and the purchase price of those lots. FIFO only sets the order in which lots are matched. What is taxable (sales, crypto-to-crypto swaps), the rate and any exemptions depend on the rules of Portugal detailed in this guide.

Taxable events

In Portugal, only converting to fiat currency (euros, dollars…) triggers tax: crypto-to-crypto swaps are tax-neutral.

• ●Sale of crypto for fiat currency (EUR, USD...)
• ●Payment for goods or services with cryptocurrencies
• ●Staking rewards: treatment not documented for this country (income on receipt or tax on sale, depending on classification)
• ●Airdrops and free tokens: treatment not documented for this country
• ●Mining income: taxable as business income or miscellaneous income
• ●Crypto-to-crypto exchange (in some countries only)
• ●Transfer between your own wallets
• ●Crypto-to-crypto swap (e.g. BTC → ETH)
• ●Converting to a stablecoin (USDT, USDC…)
• ●Any disposal after 12 months of holding
• ●Holding (HODL): holding without selling does not create any tax obligation (except in the Netherlands, Box 3)

Tax declaration procedure in Portugal

You must declare your crypto capital gains on the following forms: Modelo 3 / Anexo G. We recommend keeping the complete history of your transactions as proof.

Exemption thresholds and allowances

We have not listed a quantified exemption threshold for crypto capital gains in Portugal. The applicable regime (rate, holding period, possible exemption) is presented in the full guide. For comparison, other countries instead exempt gains based on the holding period: 12 months in Germany, 3 years in Czechia, 365 days in Portugal.

Deadlines and tax calendar

Each country has its own tax filing deadlines. Filing and payment dates in Portugal are set each year by the tax authority and may vary with the filing method. Check the official calendar for the year concerned. We strongly recommend preparing your crypto tax return in advance with Taxes Crypto rather than waiting until the last moment.

Penalties for non-declaration

Failing to declare your crypto capital gains can lead to significant penalties: tax surcharges, late-payment interest, and in serious cases, criminal prosecution for tax fraud. In the EU, the DAC8 directive gives tax administrations platform data on transactions made since 2026 (first exchanges by 30 September 2027 at the latest), which makes audits easier.

Tax treatment of crypto-to-crypto exchanges

In Portugal, a crypto-to-crypto swap (e.g. BTC → ETH) is not taxable in itself: only converting to fiat triggers tax. You can rebalance between cryptos without a taxable event.

NFTs, DeFi and derivatives

In Portugal, the 28% rate shown in this guide applies to disposals of crypto-assets; whether it applies to NFTs, DeFi income and derivatives depends on how they are classified, which is not documented here for each case. Regularly creating or selling NFTs may amount to a business activity. NFTs are excluded from the specific crypto-asset regime of the IRS code.

Obligation to declare crypto accounts and wallets

In Portugal, check whether digital-asset accounts opened with platforms established abroad must be reported: where it exists, this obligation is separate from reporting your gains. The DAC8 directive is an obligation on platforms: it does not replace your own returns.

Practical calculation examples in Portugal

In Portugal, take a taxable gain of 10,000 €. At a rate of 28%, the tax due comes to roughly 2,800 €.

Tax calendar and key dates in Portugal

In Portugal, crypto gains are reported via Modelo 3 / Anexo G. The dates are published each year by the tax authority.

Specific tips for Portugal

Crypto taxation in Portugal has certain specificities that are important to know. The FIFO calculation method imposes a precise logic for determining the order of disposals. Investors should be particularly vigilant about the following: crypto-to-crypto exchanges may be taxable depending on the jurisdiction, airdrops and hard forks have specific tax treatment, and staking or mining income is generally considered taxable income upon receipt. In case of a change of tax residence, the rules of your new country apply for future transactions, but unrealised gains may be subject to an exit tax in certain cases. Consult a tax professional if your situation is complex.

Frequently asked questions about crypto tax in Portugal

Crypto investors in Portugal often have the same questions. Do I need to declare if I haven't sold? Generally, simply holding crypto assets is not taxable, but some countries require a wealth declaration. What happens if I forgot to declare in previous years? Most tax administrations allow voluntary regularisation, often with reduced penalties. How are NFTs taxed? Their tax treatment depends on the right attached to the token and is not always that of cryptocurrencies. The applicable rate in Portugal is 28%, and the required forms are: Modelo 3 / Anexo G. Taxes Crypto automatically generates a report compatible with these forms to simplify your declaration.