AL Host Obligations in 2026: The Complete Short-Term Rental Compliance Checklist
SIBA, tourist tax, INE, IRS, insurance, plate — every AL obligation in one practical guide for 2026.
Running a short-term rental in Portugal is, in large part, an exercise in managing obligations. Some are triggered by every check-in, some are monthly, some come around once a year — and it only takes one slipping through the cracks for a problem to surface at the worst possible moment.
This guide brings together the main legal and tax obligations for AL (alojamento local) operators in Portugal, organised by area, so you have a clear picture of what needs to stay active. It's not legal or tax advice — for that, talk to your accountant. Think of it as an orientation map.
1. Registration and identification
RNAL — National AL Register
The starting point is registering through the Balcão Único Eletrónico platform, which issues your AL number. Without it, you can't operate legally — and you can't issue invoices with the correct designation.
That registration number must appear on all commercial communications: listings on platforms like Airbnb or Booking, your own website, and any other public presence.
Identification plate
The law requires a physical identification plate to be displayed on the exterior of the property, showing the type of accommodation and your registration number. The exact format and requirements are set out in AL legislation — check with your local câmara municipal or a lawyer if you're unsure about the specifics.
2. Guest reporting via SIBA
This is one of the obligations with the biggest day-to-day operational impact.
Every guest — Portuguese or foreign — must be reported to the internal security system. That reporting currently goes through SIBA (Sistema de Informação de Boletins de Alojamento), managed by the PSP.
The deadline is tight: data must be submitted within the first few hours after check-in. Accumulated delays or omissions are among the most common infractions — and among the easiest to avoid with an automated process.
What you need to collect from each guest:
- Full name
- Nationality
- ID document type and number
- Date of birth
- Expected check-in and check-out dates
If you use a channel manager or PMS, check whether it has a direct SIBA integration. If not, you're entering records manually through the PSP portal.
3. Tourist tax (Taxa Municipal Turística — TMT)
Not every municipality charges a tourist tax — but those that do require you to collect it and hand it over to the câmara periodically.
Your role here is essentially that of a collection agent for the municipality: you charge the tax to the guest at the time of payment, keep the records, and remit the amount to the municipality at the frequency set by local rules (typically monthly or quarterly, depending on the regulation).
Each municipality has its own regulation, nightly rate, exemptions (children, residents, etc.) and declaration form. There's no single national template — you need to check your own municipality's rules.
Municipalities with an active tourist tax include Lisbon, Porto, Cascais, Sintra, and Faro, among others. The list has been growing, so it's worth confirming your municipality's position even if you haven't been paying it until now.
4. INE data reporting
The Instituto Nacional de Estatística (INE) collects occupancy and revenue data from short-term rentals. The reporting obligation applies to properties above a certain size threshold — check whether your AL is covered.
Reporting is done through the INE platform and is monthly. The data requested includes number of overnight stays, guests by nationality, and accommodation revenue.
This obligation often goes unnoticed — especially for owners with a single small property — but ignoring it can lead to notifications and fines.
5. Tax obligations
Invoicing
All accommodation revenue must be invoiced. Invoices must be issued through software certified by the Autoridade Tributária (AT) or through the e-fatura portal, and must include the guest's NIF (tax number) when requested.
If you receive payments through platforms like Airbnb or Booking, they issue their own documents — but your invoicing obligation in Portugal remains. Talk to your accountant about how to reconcile the two.
IRS — simplified regime or organised accounting
Most AL owners declare rental income under IRS, in Category B (business and professional income). The simplified regime applies a coefficient to gross revenue to determine taxable income — which means you don't deduct actual expenses, but it significantly simplifies the admin.
Above a certain annual turnover threshold, organised accounting becomes mandatory. Your accountant is the right person to tell you which regime applies to you and what changes if your activity grows.
The IRS return is filed annually, in the year following the income year. Don't leave it to the last week.
VAT
Short-term accommodation is VAT-exempt in Portugal — but there are situations where VAT may apply (additional services, for example). Check with your accountant if you offer any ancillary services that could change this picture.
6. Mandatory insurance
AL legislation requires a civil liability insurance policy covering damage caused to guests and third parties during the operation of the accommodation.
Don't confuse this with a standard home contents or buildings policy — they cover different things. AL civil liability insurance is specific to the activity and must remain active for as long as the property is operating.
Keep a copy of the policy somewhere accessible, and review annually whether the coverage still matches your level of activity.
7. Complaints book
AL properties are required to have a complaints book — physical or electronic. The electronic version is managed through the Portal da Queixa or the Livro de Reclamações Eletrónico, depending on your setup.
You also need to display a visible notice informing guests that the complaints book exists.
8. Safety and habitability requirements
Beyond the administrative and tax obligations, AL properties must meet minimum safety requirements: fire extinguisher, fire blanket, first aid kit, and posted emergency information. The exact requirements are set out in legislation and can vary depending on the type of AL (villa, apartment, hostel).
If your property is in a condominium, also check whether the owners' assembly has authorised the activity — the law allows condominiums to restrict or prohibit AL.
Keeping everything on track through the year
The hard part isn't understanding what you need to do — it's not forgetting to do it while you're simultaneously managing bookings, guests, and maintenance.
A practical way to organise it:
| Frequency | Obligation |
|---|---|
| Per check-in | SIBA guest report |
| Per booking | Invoice issuance |
| Monthly / quarterly | Tourist tax remittance to municipality |
| Monthly | INE reporting (if applicable) |
| Annual | IRS return |
| Annual | Insurance renewal |
| As needed | Update RNAL if property details change |
The calendar looks manageable when it's laid out like this. The problem is that each obligation has its own portal, its own specific deadline, and its own logic — and none of them send you a reminder when the time comes.
A note on 2026
The AL regulatory landscape has been shifting over the past few years — changes to the framework law, more municipalities adopting tourist taxes, and stepped-up enforcement by the AT and local authorities. In 2026, the direction is towards greater scrutiny — not radically new rules, but stricter application of the ones already in place.
That means obligations that used to slip by unnoticed — a late SIBA submission, an unremitted tourist tax — are more likely to have real consequences than they were two or three years ago.
The best approach is to treat compliance as part of the operation, not something you deal with when a problem shows up.