Free tool · 2026

ISV calculator for imported cars

Calculate the ISV of a car imported from the EU — petrol, diesel, hybrid or 100% electric (exempt) — in seconds, with the 2026 tables. Then we handle the import for you.

ISV Calculator

ISV

ISV Calculator

Estimate
Petrol
Diesel
Hybrid
⚡ Electric
Estimated ISV
Displacement componentEnvironmental component (CO₂)Age reduction

⚠️ Indicative value, not final. Fuel prices are updated once a day with no guarantee of accuracy. The official ISV depends on the Tax Authority (AT) assessment.

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How the ISV works

Explanation

The Vehicle Tax (ISV) is paid once, at registration in Portugal. It adds two parts: the displacement component (the bigger the engine, the higher the amount) and the environmental component (the more CO₂, the higher the amount). A reduction for years of use is applied to that total, so an older car pays less. Electrics are exempt and eligible plug-in hybrids pay only 25%.

Indicative estimate based on the official 2026 tables (WLTP). The definitive value depends on the Tax Authority assessment.

Frequently asked questions about the ISV

FAQ
How is the ISV calculated in 2026?
The ISV is the sum of two components: the displacement component (based on the engine's cm³) and the environmental component (based on CO₂ emissions in g/km, WLTP table). A reduction for years of use is then applied to used vehicles.
What is the ISV age reduction?
Used cars benefit from a percentage reduction on the tax that grows with age: from 10% up to 1 year, to 80% for more than 10 years. The older the car, the lower the ISV.
Do electric cars pay ISV?
No. Fully electric cars are exempt. Eligible plug-in hybrids pay only 25%. Other hybrids and combustion cars pay the standard rate.
Do WLTP and NEDC give the same ISV?
No. Emissions differ between standards and there are separate tables. Most cars from 2019 onwards use WLTP. Our calculator uses the WLTP table.
Is the calculator value the final amount?
It's a very close estimate. The definitive amount depends on the Tax Authority (AT) assessment at the time of registration, which we guide you through.
What documents do I need for registration?
Certificate of conformity (COC), the origin registration document, invoice, inspection (IPO) and the Portuguese licence-plate application. We handle all the paperwork for you.

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