Portugal taxes gains on crypto-assets sold within 365 days of acquisition at a flat 28%; disposals after 365 days are generally exempt. Madeira residents follow the national rules. MCS, Funchal accountants since 1995, prepares crypto tax returns at fixed rates.
Portugal is not “tax-free for crypto”
Let us correct the headline you have probably read elsewhere. Since 1 January 2023, Portugal has had a specific tax regime for crypto-assets. Crypto is treated as property for income tax purposes, not as currency, and disposals can be taxable, reportable, or both. What survives of the old reputation is narrower and more conditional: an exemption for long-held assets, with meaningful exceptions. If you are resident in Madeira, or planning to become resident, the questions that decide your bill are when you acquired each asset, when you disposed of it, what you received in exchange, and where your counterparty sits.
The 365-day line
The core distinction is the holding period:
- Gains on crypto-assets (that are not securities) held for 365 days or more are exempt from personal income tax. Losses on such disposals are equally disregarded.
- Gains on crypto-assets held for less than 365 days are taxed at a flat rate of 28%, with the option of aggregation to progressive rates in specific situations.
- The holding period starts the day after acquisition and ends on the day of disposal, and it counts time held before 1 January 2023. A coin bought years ago does not restart its clock because the regime is newer than the coin.
Tax on short-term gains is generally triggered on conversion into legal tender, into goods or services, or into assets other than crypto (property, for example). Moving assets between wallets, addresses or accounts you own is not a taxable event.
Crypto-to-crypto swaps: a taxable event that defers the tax
Exchanging one crypto-asset directly for another is a taxable event that, by itself, produces no taxable income. The mechanics matter for your records:
- On a short-term swap (asset held under 365 days), the acquisition cost of the old asset carries over to the new one, so the original cost basis follows the chain until you eventually convert to fiat, goods or non-crypto assets.
- On a long-term swap (asset held 365 days or more), the gain is treated as realised but exempt, and both the holding period and the acquisition cost reset.
One important exception cuts across both the exemption and the deferral: they do not apply where the proceeds are paid by, or received from, a person or entity resident outside the EU/EEA in a jurisdiction without an exchange-of-information agreement covering tax with Portugal. Most major jurisdictions participate in information exchange, but the point has to be checked position by position.
FIFO, per service provider
To compute short-term gains, Portuguese law imposes a first-in-first-out ordering rule applied per crypto-asset service provider. The first units you bought on a given exchange are the first ones deemed sold on that exchange. Three practical consequences:
- Your gain on any disposal depends on your entire purchase history on that platform, not just the lot you think you sold.
- Cost bases carried over from non-taxable swaps have to be traced through the chain, sometimes across many transactions.
- Holding assets across several exchanges and wallets multiplies the ledgers that must be reconciled before a single figure can go on the return.
This is why we price crypto returns by transaction volume, and why our published tiers step up above 15 FIFO transactions: past that point, the work is no longer “one more annex” but the reconstruction of an auditable FIFO ledger.
Staking, mining and getting paid in crypto
Not all crypto income is a capital gain:
- Third-party staking rewards (delegating validation to a provider) are investment income, but taxation is deferred until you dispose of the rewarded assets, which enter your ledger with a zero acquisition cost. The tax is postponed, not forgiven.
- Mining and direct validation through consensus mechanisms are business income, taxed at progressive rates, with specific coefficients under the simplified regime for taxpayers below the gross-income threshold.
- Salary or fees paid in crypto are remuneration in kind, valued and taxed like any other pay.
Whether an active trader has crossed into a business activity is a facts-and-circumstances question with a very different rate outcome; it deserves a written position, not an assumption.
What Madeira residents must actually report
Exemption does not mean invisibility. The Modelo 3 return has dedicated fields for crypto:
- Annex G for taxable gains, including the box for disposals under 365 days and a separate box for disposals involving non-EU/EEA counterparties outside information-exchange coverage;
- Annex G1 for exempt gains, which are declared even though no tax is due;
- Annex J where foreign-source income is involved.
The return asks for acquisition dates and costs, realisation dates and values, connected expenses, and identification details of the custodian or platform and the counterparty’s country. Portuguese-based crypto service providers already report client operations to the tax authority annually, and international reporting under the OECD’s CARF framework and the EU’s DAC8 directive is being phased in. The practical rule: assume the tax authority can see the transaction, and build the file that explains it.
Two further points arrive at the edges of the regime: ceasing Portuguese tax residency triggers a deemed disposal of crypto holdings at market value, and gifts or inheritance of crypto outside the direct family can attract 10% stamp duty. Both are planning events, not filing footnotes.
What to keep, from day one
For every asset, per platform: acquisition date and cost, disposal date and value, fees, the swap chain where cost bases carried over, and the residence of counterparties. Exports from exchanges and reputable crypto tax software help, but in our experience the raw exports still need professional reconciliation against the Portuguese FIFO and carry-over rules before they can support a return.
Have your crypto return prepared and signed by certified accountants
MCS prepares Portuguese tax returns with crypto-asset reporting at fixed rate, that vary by number of FIFO transactions, prepared and reviewed by certified accountants in Funchal, with your initial consultation fee credited against the engagement.
This article is general information, not tax advice, and reflects our reading of the rules at the date of publication. Crypto-asset taxation depends on individual facts and is subject to legislative change; obtain advice on your specific situation before acting
Miguel Pinto-Correia holds a Master Degree in International Economics and European Studies from ISEG – Lisbon School of Economics & Management and a Bachelor Degree in Economics from Nova School of Business and Economics. He is a permanent member of the Order of the Economists (Ordem dos Economistas)… Read more
