Portugal Crypto Tax Guide 2025
📌 Introduction
Portugal is widely considered one of the most pro-crypto countries in the world, in part due to their crypto-friendly tax laws. A key highlight of Portugal’s crypto tax laws includes no tax on long-term capital gains and just 28% on short-term gains.
In 2023, the country implemented a structured tax regime for cryptocurrency activities. The Portuguese Tax and Customs Authority (Autoridade Tributária e Aduaneira) oversees the enforcement of Portugal’s tax regulations. Cryptocurrencies are classified as digital assets and are subject to capital gains and/or income taxes, depending on the nature of the transaction.
This guide covers all of the tax implications in Portugal for various crypto-related activities, including trading, staking, lending, and all other relevant DeFi activities. We also detail reporting deadlines, exemptions, and how crypto investors in Portugal can reduce their tax bill.
📅 Reporting and Deadlines
Tax Year: January 1 to December 31
Filing Period: April 1 to June 30 of the following year
Payment Deadline: August 31
Reporting Platform: Taxpayers must file their returns online via the Portuguese Tax Authority's website using the Modelo 3 IRS form.
💼 Crypto Tax Basics
Taxable Transactions
Selling Crypto for Fiat: Tax is only triggered when cryptocurrencies are sold for fiat (euros or another government-issued currency). This includes off-ramping crypto to a bank account. If the crypto was held for less than 365 days, the gain is taxed at 28%.
Using Crypto for Purchases: Using cryptocurrencies to pay for goods or services is considered a disposal and is taxable under the same conditions as selling.
Earning Crypto: Income from mining, staking, airdrops, or receiving crypto as payment for services is taxable. Such income is categorized under different tax categories depending on the nature of the activity.
Non-Taxable Transactions
Purchasing Crypto with Fiat: Buying cryptocurrencies using fiat currency is not a taxable event.
Crypto-to-Crypto Swaps: Exchanging one cryptocurrency for another (e.g., BTC for ETH or SOL for USDC) is not considered a taxable event in Portugal. The cost basis is carried over from the original purchase and is only taxed when users offramp to their bank accounts or use crypto for a purchase.
Transferring Between Wallets: Moving cryptocurrencies between wallets owned by the same individual is not taxable.
Long-Term Holdings: Gains from selling cryptocurrencies held for more than 365 days are exempt from taxation.
Example of Cost Basis Carryover On Crypto Swaps in Portugal
Unlike most countries where each swap of one token for another is a taxable event, Portuguese taxpayers don't realize any gains until they sell their crypto for fiat. That means their cost basis is carried over each time they swap, dating back to their original purchase of crypto.
As an example:
If you buy €100 of ETH and it doubles in price to €200, then you swap it for BTC, no tax is due.
Later, if BTC doubles in price to €400 and you sell all of it for euros, you’ll be taxed on €300 of gains (€400 sale minus original €100 fiat cost basis).
If you sell only half the BTC, you’ll be taxed on half the gains (i.e., €150 gains, using €50 of cost basis).
Deducting Losses
Capital Losses: Losses from crypto transactions can be used to offset capital gains.
Carryforward Rules: Unused losses can be carried forward for up to five years to offset future gains.
Key Allowances and Thresholds
No Tax-Free Thresholds: While long-term gains are tax-free, Portugal does not have a tax-free threshold for short-term capital gains or income.
Unique Tax Laws
Stamp Duty on Gratuitous Transfers: A 10% stamp duty applies to gratuitous transfers of crypto assets, such as gifts or inheritances, under certain conditions.
💸 Income Tax Brackets
Portugal employs a progressive income tax system. As of 2025, the tax brackets are as follows:
Taxable Income (€) | Tax Rate (%) |
Up to 8,059 | 13.0 |
8,059 – 12,160 | 16.5 |
12,160 – 17,233 | 22.0 |
17,233 – 22,306 | 25.0 |
22,306 – 28,400 | 32.0 |
28,400 – 41,629 | 35.5 |
41,629 – 44,987 | 43.5 |
44,987 – 83,696 | 45.0 |
Above 83,696 | 48.0 |
These rates apply to income categorized under Category B (professional or business income).
📈 Capital Gains Tax on Crypto
Taxable Events
Short-Term Holdings: Selling crypto held for less than 365 days incurs a 28% capital gains tax.
Calculation Method
Determine Net Profit: Subtract cost basis (original fiat purchase price) from fiat sale price.
Identify Holding Period: Only short-term holdings (less than 365 days) are taxed.
Apply Tax Rate: If held for less than a year, apply the 28% tax rate for short-term holdings.
Report Gains: Declare gains in Appendix G of the Modelo 3 IRS form.
💰 Income Tax on Cryptocurrency
Some crypto transactions are taxable as income and are taxed alongside your total taxable income for the year. If you receive crypto as income, it is taxed based on the fair market value, in euros, at the time it was received.
Taxable Income Sources
Mining Rewards: Income from mining is considered professional income and taxed under Category B.
Staking and Lending: Earnings from staking or lending are categorized under Category E and taxed at a flat rate of 28%.
Airdrops: Received airdrops are considered income and taxed accordingly.
Payments Received for Services: Receiving cryptocurrency as payment for services is taxed under Category B.
Calculation Method
Valuation at Receipt: Determine the fair market value of the cryptocurrency in euros at the time of receipt.
Subtract Expenses: Deduct any related expenses incurred to earn the income. This can include gas fees, electricity for a mining operation, and any other expense related to earning income.
Apply Tax Rates: Apply the relevant tax rate based on the income category (Category B: progressive rates; Category E: flat 28%).
🔍 Tax Treatment of Specific Crypto Transactions
Mining and Staking
Income Recognition: Earnings from mining and staking are recognized as income at the time of receipt.
Subsequent Disposal: Any gains or losses from the subsequent sale of mined or staked crypto are subject to capital gains tax rules.
Airdrops and Hard Forks
Airdrops: Taxed as income upon receipt.
Hard Forks: New coins received from hard forks are taxed as income at the time they are available to the taxpayer.
NFTs
Sales: Profits from selling NFTs are subject to capital gains tax if held for less than 365 days.
Creation and Sales by Artists: Income from creating and selling NFTs is considered professional income and taxed under Category B.
DeFi Activities
Earnings: Income from DeFi activities, such as yield farming or liquidity provision, is taxed under Category E at a flat rate of 28%.
Token Sales: Profits from selling tokens acquired through DeFi activities are subject to capital gains tax rules.
Lost or Stolen Crypto
Portugal's tax laws do not provide specific provisions for lost or stolen cryptocurrencies. Taxpayers may need to provide evidence of loss and consult with tax professionals to determine potential deductions or relief.
Gifting and Inheritance
Gifts: Gifting cryptocurrencies may be subject to a 10% stamp duty if certain conditions are met.
Gifts between close family are exempt from the stamp duty tax.
Gifts under €500 may also be exempt from stamp duty.
Inheritance: Inherited cryptocurrencies may also be subject to stamp duty.
🧾 Using Crypto Tax Software
Utilizing crypto tax software like Awaken Tax can simplify the tax reporting process and significantly reduce your workload when it comes to reporting taxes.
Crypto tax software can:
Automate transaction tracking and labeling
Accurately calculate your total gains and losses
Generate tax reports compatible with Portuguese tax forms
Features to Look For in Crypto Tax Software:
Integration with your exchanges and wallets
Ability to accurately track all types of transactions
Downloadable reports with all of the information you need to file your tax returns
Compatibility: Ensure the software supports the Modelo 3 IRS form and other requirements of the Portuguese Tax Authority.
💡 Reducing Crypto Taxes Legally
Long-Term Holding: The best way to reduce your crypto taxes in Portugal is to simply diamond hand your tokens until they mature to the long-term tax rate of 0%.
Tax Loss Harvesting: Offsetting gains with losses from other crypto transactions can reduce taxable income.
Professional Advice: Consulting with tax professionals can help identify additional legal strategies for tax optimization.
✅ Conclusion
Compliance with Portugal's crypto tax regulations is essential for all crypto investors and users. Maintaining detailed records of all transactions and seeking professional advice can ensure accurate reporting and optimize tax obligations.
For more information, consult the Portuguese Tax and Customs Authority or speak with a qualified tax advisor.
