Portugal Forex Tax Calculator 2026

Forex CFD trading profits in Portugal are classified as mais-valias (capital gains) under Category G income of the IRS (Imposto sobre o Rendimento das Pessoas Singulares). The default treatment is tributação autónoma(autonomous taxation) at a flat 28% rate under Art. 72 of the Código do IRS.

Unlike most EU jurisdictions, Portugal offers a genuine choice: taxpayers can opt for englobamento (aggregation), adding capital gains to their other income and taxing the total at progressive IRS rates from 14.5% to 48%. This makes Portugal one of the few countries where low-income traders can pay significantly less than the headline rate.

Under autonomous taxation (28%), capital gains are taxed separately from other income. The calculation is straightforward: net gains (gains minus same-year losses) times 28%. No loss carryforward is available. This is the default for most traders and requires no special election.

Under englobamento(Art. 22 CIRS), capital gains are added to all other income categories (employment, rental, business) and the total is taxed at progressive IRS rates. The key advantage: if your combined income falls below approximately EUR 21,000, your marginal rate on trading gains is at most 28.5% — comparable to the flat rate. Below EUR 11,600, the rate drops to 21% or less. A trader with EUR 12,000 in other income and EUR 10,000 in trading gains pays roughly 21–26.5% on those gains under englobamento, vs 28% flat.

The trade-off: englobamento applies to allCategory G income for the year (you cannot aggregate selectively), and high-income earners may push gains into the 37–48% brackets, making autonomous taxation cheaper. The calculator above shows both options and recommends the lower-cost path.

Under autonomous taxation, capital losses offset capital gains in the same tax year only. If losses exceed gains, the surplus is lost — there is no carryforward. This is a significant limitation for traders with volatile year-to-year performance.

Under englobamento, unused Category G losses carry forward for 5 years (Art. 55 CIRS) and offset future Category G gains. This is more generous than Spain (4 years) but shorter than France (10 years) or Ireland (unlimited). The 5-year window covers most trading cycles. Losses from one category cannot offset gains from another.

Portugal’s Non-Habitual Resident (NHR) regime attracted thousands of expat traders with a potential 0% rate on certain foreign-source capital gains for 10 years. From 1 January 2024, NHR was replaced by the IFICI(Incentivo Fiscal à Investigação Científica e Inovação).

Existing NHR holdersretain their 10-year benefit under transitional rules — if you received NHR status before 2024, your forex income may still qualify for the favourable treatment until your 10-year window expires.

New applicants (2024+) can only access IFICI if they qualify as professionals in science, technology, or innovation. Forex trading income alone does not qualify. For most new arrivals, the standard 28% autonomous rate (or englobamento for low-income situations) applies. This calculator models the standard regime, not NHR/IFICI.

Income from non-Portuguese brokers (Exness, Pepperstone, BlackBull, and most EU-passported brokers) is declared on Anexo Jof the IRS annual return. No tax is withheld at source — self-assessment is mandatory. The filing deadline is typically 30 June.

Under CRS(Common Reporting Standard), all EU-regulated brokers report account balances and income to the Autoridade Tributária via the broker’s home jurisdiction. Failure to declare income that the AT already knows about via CRS can trigger automatic penalties. If your broker also withholds tax in its jurisdiction of regulation, you can claim a foreign tax credit on Anexo J to avoid double taxation (subject to the applicable double-tax treaty).

This calculator applies to Portuguese tax residents on the mainland filing IRS. Residents of Azores and Madeirabenefit from reduced IRS rates (typically 20–30% lower). It does not model the NHR/IFICI regime, stamp duty (not applicable to forex), or municipal surcharges (derrama). The englobamento calculation uses the marginal difference method (tax on total income minus tax on other income alone) which is the correct way to isolate the tax attributable to trading gains. Consult a contabilista certificado for personalised advice.