Importing and Legalising a Foreign Car in Portugal in 2026 — A Practical Guide to the ISV, the Transfer-of-Residence Exemption, the DAV and Getting Your Matricula Nacional

Plenty of people moving to Portugal arrive with a car they would rather keep than sell. A foreign-registered vehicle can be driven in Portugal for a limited grace period, but once you become resident the law requires you to legalise it — register it on Portuguese plates and settle the relevant taxes — or take it off the road. The process, known as legalização or matrícula nacional, runs through three separate authorities and has tight deadlines. Done correctly, and especially if you qualify for the transfer-of-residence tax exemption, it is manageable. Done late, it gets expensive fast.

This guide explains who has to legalise a car, how the Vehicle Tax (Imposto Sobre Veículos, ISV) and the transfer-of-residence exemption work, the step-by-step procedure, and the realistic costs in 2026. It is general guidance, not legal or customs advice — always confirm current rules on the Tax and Customs Authority's customs portal before you commit.

Who has to legalise a car — and when

If you are a tourist or short-term visitor, you may circulate in a foreign-registered vehicle without legalising it. The obligation is triggered when you establish residence in Portugal. The two clocks that matter are:

• The customs deadline. Once the vehicle is brought into Portugal on a permanent basis, you must begin the customs process by submitting a Vehicle Customs Declaration (Declaração Aduaneira de Veículo, DAV). The window is short — counted in working days from the vehicle's arrival — so this is not something to leave for "later".
• The residence deadline. Where you are claiming the transfer-of-residence exemption, the vehicle generally has to be presented for legalisation within twelve months of you formally taking up residence in Portugal.

Driving a foreign-registered car in Portugal after you are resident, beyond the permitted grace period and without starting the process, exposes you to fines and even seizure of the vehicle. Legalising a car is a separate obligation from exchanging or registering your foreign driving licence — you need to handle both, on their own timelines.

EU versus non-EU: a fundamental split

The single biggest factor in cost is where the car is coming from.

From another EU/EEA country. Because the vehicle is already in free circulation within the single market, no customs duty or import VAT is due on a used car you have owned. The main charge to consider is ISV, and even that may be waived under the transfer-of-residence exemption (below).

From outside the EU (for example the United Kingdom, the United States or any third country). Here the car is treated as an import. Unless an exemption applies, you can face customs duty (commonly around 10 percent on passenger cars), import VAT at the standard 23 percent rate, and ISV. The transfer-of-residence relief can cover these too, but the conditions are strict and the paperwork heavier.

How ISV is calculated

ISV is Portugal's one-off vehicle tax, charged when a car is first registered on national plates. It is not a simple percentage of value. The tax is built from two components:

• a cylinder-capacity component based on engine size (in cubic centimetres); and
• an environmental component based on CO₂ emissions, which rises steeply for higher-emitting vehicles.

For used cars, a reduction (the redução pela desvalorização) is applied according to the age of the vehicle — older cars attract a larger discount on the base figure. The practical effect is that a small, low-emission, older car can carry a modest ISV bill, while a large petrol SUV can be taxed heavily enough to make legalisation uneconomic. The Tax and Customs Authority publishes an official ISV simulator on its customs portal; running your exact engine size, emissions figure and first-registration date through it before you ship anything is the single most useful thing you can do.

The transfer-of-residence exemption

The relief that makes legalisation affordable for most movers is the ISV exemption for transfer of residence (isenção por transferência de residência). In broad terms, it waives ISV (and, for non-EU imports, can also remove customs duty and VAT) for someone genuinely relocating their normal home to Portugal, bringing a personal vehicle with them. The core conditions are:

• You were resident abroad for a minimum period — generally at least twelve consecutive months — before transferring your residence to Portugal.
• You owned and used the vehicle abroad for at least six months before the transfer of residence.
• The car was acquired with all applicable taxes paid in the country of origin, and did not benefit from any export-related tax relief.
• The vehicle is brought in on the occasion of the normal transfer of residence, and the application is made within the permitted window.
• After legalisation you must not sell, rent, lend or otherwise dispose of the car for twelve months. Doing so before the period ends means the waived tax becomes due.

The exemption is personal and is generally limited to one vehicle per qualifying person. You will need documentary proof of your prior foreign residence (such as a certificate of cancellation of residence abroad, or equivalent), proof of ownership for the required period, and proof of taking up residence in Portugal — which is where your Portuguese tax-residence status and fiscal address become relevant.

The step-by-step process

1. Gather the documents. You will need the foreign registration certificate (the vehicle's logbook), the Certificate of Conformity (COC) or a national type-approval number, proof of ownership, and your identification and residence documents. The COC is the document that proves the car's technical specification across the EU; if you do not have it, request it from the manufacturer before shipping.
2. Book a Category B inspection. Take the car to an approved inspection centre (centro de inspeções) for a Category B inspection, which is the technical check used to assign a Portuguese registration. You present the foreign registration certificate, the COC (or homologation number) and a completed IMT Modelo 9 form. This step verifies the vehicle and feeds into the issuing of a national plate by the Institute for Mobility and Transport (IMT).
3. Submit the DAV. File the Vehicle Customs Declaration through the Tax and Customs Authority's customs portal within the deadline (working days from arrival). This is where ISV — and, for non-EU cars, duty and VAT — is assessed, and where you claim the transfer-of-residence exemption if you qualify. Either pay the assessed tax or have the exemption confirmed.
4. Obtain the registration document. Once customs and IMT formalities are cleared, IMT issues the Documento Único Automóvel (DUA), the single vehicle document, for which there is a small fee.
5. Register the vehicle. Register the car at the Vehicle Registry (Conservatória do Registo Automóvel) to record ownership under Portuguese law. Doing this promptly matters: the fee is lower if you register within 60 days of the registration being issued, and roughly doubles after that.
6. Fit Portuguese plates. Have number plates made up with your assigned matrícula and fitted. From this point the car is Portuguese-registered, and the annual road tax, the Imposto Único de Circulação (IUC), becomes payable each year in the month of first registration.

What it costs in 2026

Beyond ISV (or its exemption), the fixed administrative costs are modest and broadly predictable:

• Category B inspection: typically in the region of €100, depending on the centre.
• DUA (registration document) from IMT: around €45.
• Vehicle Registry registration: about €55 if completed within 60 days, rising to roughly €120 if you miss that window.
• Number plates: a small workshop cost, usually a few tens of euros.
• Shipping or driving costs from the country of origin, plus any agent's fee if you use one.

The variable — and potentially large — figure is ISV itself, plus duty and VAT on non-EU imports if you do not qualify for relief. For a higher-value or higher-emission car coming from outside the EU without the exemption, those charges can run into many thousands of euros and frequently exceed the value of legalising the vehicle at all.

When it is not worth it

Importing a car only makes sense when the all-in cost of legalisation is comfortably below the cost of buying an equivalent vehicle locally. If you do not qualify for the transfer-of-residence exemption, if the car is a large or thirsty model that attracts heavy ISV, or if it is a non-EU import facing duty and VAT on top, it is often cheaper to sell the car before you move and buy a used one in Portugal instead, where the tax is already baked into the price. Right-hand-drive cars from the UK and Ireland are a further complication: they are legal to register but harder to resell and more awkward on Portuguese roads.

Practical tips

• Simulate the ISV before you ship. The official calculator will tell you within minutes whether legalisation is viable. Do this with the exact emissions and engine figures from the COC, not estimates.
• Mind the deadlines from day one. The customs declaration window is counted in working days, and the exemption window in months from when you take up residence. Late filing is the most common — and most avoidable — way to lose the exemption or incur penalties.
• Keep your move documented. Removals paperwork, proof of prior residence and ownership records all support an exemption claim. If you are also shipping household goods under the transfer-of-residence relief, coordinate the two so your dates and evidence line up.
• Consider a despachante. A customs broker (despachante) or a specialist legalisation service can handle the DAV and IMT steps for a fee — often money well spent if your case is non-EU, complex, or time-pressured.
• Don't forget the after-life. Once registered, the car needs Portuguese insurance, periodic roadworthiness inspections (the inspeção periódica obrigatória) on the national schedule, and annual IUC. Recent reforms have also overhauled how owners may legally modify a registered car, which is worth knowing if your vehicle has non-standard parts.

For most people relocating from within the EU with a car they already own, the transfer-of-residence exemption turns what looks like a daunting tax bill into a sequence of manageable administrative steps. The deciding factor is almost always the same: run the numbers and check your eligibility before the car arrives, not after.