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Portugal ISV Calculator

Estimate Portuguese ISV from engine displacement, WLTP CO2, fuel type, diesel particles and used-import age reduction.

Portugal ISV calculator

Estimate ISV from engine displacement, WLTP CO2 and used-import age reduction.

Vehicle details

Cylinder capacity shown on the registration document or certificate of conformity.

Use the WLTP figure unless the official rule for your vehicle says otherwise.

The year the vehicle was first registered abroad or new.

The year you expect the tax calculation to be assessed.

Portugal ISV here uses the 2026 WLTP passenger-car tables and age reduction. Special regimes and exemptions are not included.

Estimated tax
€1,799
Gross tax
€2,248
Used-vehicle reduction
€450
Diesel surcharge
€0

Tax breakdown

Engine component€2,209
CO2 charge€40
Diesel surcharge€0
Used-vehicle reduction-€450
Estimated tax€1,799

Formula details

Engine formula1,498 cc x 5.61 - €6,195
CO2 formula125 g/km x 5.27 - €619
Depreciation formula20%

Official source links

Portal das FinancasISV 2026 tables

Portugal ISV calculator is an unofficial planning estimate, not legal, tax or customs advice. The calculation runs locally in your browser and does not upload your numbers.

About the Portugal ISV Calculator

Use this Portugal ISV calculator to estimate Imposto Sobre Veiculos for a passenger car. Enter engine displacement, WLTP CO2, fuel type and first registration year to see cylinder, environmental, diesel-particle and used-import reduction components. The calculator runs locally in your browser.

Portugal ISV Calculator features

  • 01

    Cylinder and CO2 components

    The estimate applies the 2026 passenger-car engine displacement and WLTP environmental tables.

  • 02

    Diesel particle surcharge

    Diesel vehicles can include the particle surcharge where the official particulate value requires it.

  • 03

    Used import age reduction

    The age reduction is applied from the first registration year to estimate the payable ISV.

Portugal ISV Calculator FAQ

How is ISV calculated in Portugal?
Passenger-car ISV combines an engine displacement component and an environmental CO2 component, with fuel-specific tables and possible reductions.
Do used imports pay less ISV?
Used EU imports can receive an age-based reduction. This calculator applies the standard reduction by age band.
Do diesel cars pay extra ISV?
Diesel passenger cars with particulate emissions at or above the threshold can pay a 500 EUR surcharge.
Are electric cars exempt from ISV?
Pure electric passenger vehicles are generally exempt from ISV, but always check the official conditions.
Is this the official Portal das Financas simulator?
No. It is a browser-only estimate based on public 2026 tables; use the official simulator for filing.

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