What’s changed
If you own a flat in Lisbon, a villa in the Algarve, or a two-bed apartment in Porto and rent it out on Airbnb, Booking.com or Vrbo, the platform is now quietly sending your earnings straight to Finanças every year — no self-declaration required for the tax authority to know exactly what you made. This isn’t a new tax. It’s an information pipeline, and for foreign owners who’ve historically treated short-term rental income as something to disclose (or not) at their own discretion, that discretion is gone.
The mechanism is DAC7 — the EU’s seventh Directive on Administrative Cooperation, in force since 1 January 2023. Council Directive (EU) 2021/514, known as ‘DAC7’, entered into force on the 1 January 2023. Platforms have been collecting and transmitting host data for a couple of reporting cycles now, but 2026 marks a period of visibly tighter enforcement in Portugal, with Finanças cross-checking platform data against what hosts actually declare on their IRS returns.
How the reporting actually works
Platform operators report information related to their EU-resident sellers on an annual basis to the tax authorities of the Member State of single registration. The obligation sits with the platform, not the host — Airbnb, Booking.com and similar operators must identify who is renting, verify their tax details, and pass transaction totals onward. Platforms report total payments made or credited to each seller per quarter, the number of underlying transactions, any fees, commissions or taxes charged, and the financial account (like IBAN) where payments were sent.
Crucially, this applies regardless of where the host lives. Both EU and non-EU platform operators are impacted, with non-EU operators having a reporting obligation if they facilitate the rental of immovable property located in the EU regardless of the place of residence of the sellers. So a Canadian or British owner who never sets foot in Portugal, letting their Porto apartment through Airbnb while living abroad, is just as exposed to reporting as a resident host.
The Commission is explicit that DAC7 doesn’t invent new liabilities — it just makes existing ones visible. DAC7 does not impose any new tax or in any way regulate the taxation of income earned by sellers on digital platforms; income earned is taxed in accordance with the existing taxation rules of the country based on national legislation. In Portugal, that means alojamento local income is taxed as it always has been — the difference is that Finanças now has a reliable, automated record to check your return against.
Why foreign owners specifically feel this
Two groups get caught out. The first: owners who let a property informally, without an AL licence or a properly registered CAE activity code, assuming platform income was somehow invisible to the Portuguese system. It never really was invisible, but it’s now actively cross-referenced. The second: owners who declare rental income in their home country and assumed that was sufficient, without realising Portuguese-source rental income from a Portuguese property is generally taxable here too, and that mismatches between platform data and filed returns tend to generate correspondence from the tax authority rather than silence.
Short-term rental profits in Portugal fall under Category B business income once you’re operating through an Alojamento Local licence, taxed via the regime simplificado unless you opt for organised accounting — the same framework covered in our guide to tax & NIF. The AL licence itself, issued by the local Câmara Municipal, remains a separate legal requirement from the tax side: you need a NIF and registered activity with Finanças before you can even apply for it.
The wider EU picture
Portugal isn’t acting alone. DAC7 obliges every member state’s tax authority to receive and share this data with counterparts across the bloc, so a host’s Portuguese platform income can, in principle, surface in conversations with tax authorities elsewhere if there’s a residency question. Council Directive 2021/514, better known as DAC7, introduces reporting obligations for digital platform operators, designed to ensure fair taxation by requiring platforms to collect and share information on reportable sellers with EU tax authorities, whether the platform is based inside or outside the EU. The exemptions are narrow and mostly irrelevant to typical Airbnb hosts — they’re aimed at large marketplace sellers of low-value goods, not property owners letting a Portuguese apartment.
What to actually do about it
If you’re renting a Portuguese property short-term, the practical checklist hasn’t really changed, it’s just less forgiving now:
- Confirm you hold a valid Alojamento Local (AL) licence and RNAL number through your Câmara Municipal — operating without one risks fines as well as delisting from platforms.
- Make sure your Finanças activity registration and CAE code reflect what you’re actually doing.
- Declare the income through your annual IRS return within the 1 April–30 June filing window, and keep records that reconcile with whatever the platform reports.
- If you’re a non-resident owner, get proper advice on whether Portuguese-source rental income creates a filing obligation here even if you’re tax resident elsewhere — double taxation treaties generally prevent paying tax twice, but they don’t remove the requirement to declare.
None of this is exotic tax planning. It’s basic compliance that DAC7 has simply made much harder to skip. Given how AIMA and Finanças have both moved toward automated, data-matched enforcement across immigration and tax in the past year, treating platform income as a grey area is no longer a realistic strategy — get proper advice before Finanças gets to you first.
Sources
This article was produced with AI assistance and editorial oversight in line with our editorial policy. It is general information, not legal or tax advice.