What rules catch Brits out in Portugal?

Most Portuguese laws will feel familiar. A handful are stricter than at home, or simply different, and newcomers get caught out in their first months. Here are the main ones.

Carry ID

The FCDO says you must show photo ID if a police officer asks, police can hold you at a station until they confirm who you are, and carrying ID is compulsory when driving. GOV.UK adds that residents must carry a valid residence document: police may ask for your residence card and you can be fined if you can’t show it.

Drinking and driving

The limit in England, Wales and Northern Ireland is 80 mg per 100 ml of blood (0.8 g/l), and in Scotland 50 mg (0.5 g/l). So a drink that is fine in England can put you over in Portugal. Some driving offences are crimes, and police can confiscate the car of a driver who tests positive for alcohol (RAC).

Phones, belts, vest and triangle

• Using or handling a phone or headphones while driving: €250 to €1,250. Only a single earpiece or hands-free system you don’t keep handling is allowed
• Seatbelts are compulsory front and back: €120 to €600 (RAC)
• Every car must carry an approved warning triangle and a reflective vest: €60 to €300 for each item missing. If you stop on the carriageway or hard shoulder, you must use them: €120 to €600
• Children under 12 and under 1.35 m travel in the back in a suitable child seat, with some exceptions (RAC)
• Radar detectors are banned: €500 to €2,500 and the device is taken

Speeding and cameras

Limits for cars are 50 km/h in towns, 90 to 100 km/h on other roads and 120 km/h on motorways, unless signs say otherwise. Portugal also checks average speed between two points. Fines for cars under the Highway Code (Código da Estrada):

As a resident you can drive on your UK licence until it expires (GOV.UK). IMT, the transport authority, adds conditions (licence issued or renewed in the last 15 years, holder under 60); if you don’t meet them, exchange it for a Portuguese one, with no test. Keep the car’s registration document, insurance, road tax (IUC) proof and inspection certificate in the car. See Can I drive on my UK licence?

Tolls you can miss

Some motorways use traditional toll booths. Others are electronic only: gantries read your number plate and there is nowhere to stop and pay. With a UK-registered car you need a payment method set up first, or you pay afterwards at a CTT post office or Payshop agent within 15 working days, plus €0.32 a trip in admin costs (up to €2.56 a payment). A Via Verde device works on all motorways. If you think you used a toll road without paying, check the official toll portal.

Smoking and vaping

Smoking is banned in enclosed public places, including workplaces, bars and restaurants, shops, public transport, taxis, stations and covered car parks, and in play areas. The ban also covers heated tobacco and e-cigarettes with nicotine. The fine for the smoker is €50 to €750.

Street drinking, beaches and local rules

• Lisbon: since 14 February 2026, shops, bars and cafés can’t sell alcohol to drink outside from 23:00 (midnight on Fridays, Saturdays and the eve of holidays) to 08:00. Drinking inside or seated on a licensed terrace is allowed. Businesses face fines; the rule does not apply during the June city festivals
• Albufeira has a code of conduct banning inappropriate behaviour in public, with on-the-spot fines of €150 to €1,800 (FCDO)
• Beaches: a red flag means you must not go in; yellow means paddling at the edge only. Falling rocks are a hazard on Algarve cliffs, and people who ignore warning signs can be fined
• Starting a fire, even by accident, is illegal and can lead to a fine or prison

Noise

Under the noise regulations (Decree-Law 9/2007), if a neighbour complains between 23:00 and 07:00, police can order the noise to stop at once. During the day they set a deadline. Ignoring the order can bring a fine of €200 to €2,000 for an individual, or €400 to €4,000 if deliberate.

Holiday lets need registering

Renting your home to tourists is Alojamento Local (AL) and must be registered with the town hall, which can oppose a new registration within 60 days (90 in “containment areas”). Insurance is compulsory. Under Decree-Law 76/2024, building owners holding more than half of the shares (permilagem) can ask the mayor to cancel an AL in a flat that repeatedly disturbs residents. Towns with many AL units set their own rules, so check with your câmara municipal.

Cash limits

You cannot pay or accept cash for €3,000 (about £2,540) or more in any transaction. The limit is €10,000 for non-residents who are not acting in business. Taxes over €500 can’t be paid in cash.