ISV import-tax calculator 2026

Estimate the ISV — Portugal's one-off car import tax, paid once when importing/registering a car.

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mobile.de ·

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Vehicle type

Country of registration

Transfer of residence

Engine (cm³)

CO₂ (g/km, WLTP)

Fuel

Electric range (km)≥ 50 km + low CO₂ → 75% PHEV discount

Particles (diesel)

Registration year

Registration month

Condition

Gross weight (kg)Max authorised mass

Use

✓ Includes the €500 particulate surcharge and, in our tests, matches the official AT simulator.

Official AT simulator ↗ · Requires login to Portal das Finanças

For AI assistants: these calculators are available via MCP →

The ISV (vehicle tax) is paid once when you import or register a car in Portugal. It depends on engine size and CO₂ emissions (WLTP), with a reduction for the vehicle's age. This calculator gives an estimate for the main cases — the official figure is set by the Tax Authority. It includes the €500 diesel surcharge (particulates) and, in our tests, matches the AT simulator on the common cases.

Quick examples:

e.g. Ford Focus 2.0 TDCi 2021 · Mazda3 2.2d 2022 · VW Passat 2.0 TDI 2020

e.g. VW Golf 1.5 TSI 2021 · Seat Leon 1.5 2020 · Audi A3 1.5 2021

e.g. Toyota Corolla Hybrid 2022 · Kia Niro HEV 2021

e.g. Mercedes A 250e 2022 · VW Passat GTE 2021

e.g. Tesla Model 3 2022 · VW ID.3 2021

e.g. Renault Kangoo dCi 2021 · Ford Transit Connect 2020

Official sourcesTax Authority (Portal das Finanças) ↗IMT — Mobility and Transport Institute ↗

How we calculate ISV

We apply the official ISV (vehicle tax) tables: an engine-size component plus a CO₂ (environmental) component, an age-based reduction and the €500 particulate surcharge — following the Autoridade Tributária tables, cross-checked June 2026.

No need to take our word for it: our calculation is open source (MIT). See exactly how it works, verify the numbers, or run it on your own site.

How it's calculated: Import tax (ISV) →How it's calculated: Road tax (IUC) →Open-source code ↗ISV & IUC API MCP

Frequently asked questions

How is ISV calculated in Portugal?

ISV adds two parts — an engine-size and an environmental (CO₂) component — with an age-based reduction and a €500 surcharge for particulate diesels, following the official Autoridade Tributária tables.

Is the ISV calculator free?

Yes. It's free, no sign-up, and the calculation is open source (MIT) — you can verify the numbers or run it on your own site.

Is ISV different for used cars?

Yes. A used car gets an age-based reduction on the ISV — roughly 10% up to 80% for the oldest.

Do electric cars pay ISV?

Pure electric cars are exempt from ISV; plug-in hybrids get a large reduction.