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Ireland VRT Calculator

Estimate Irish Vehicle Registration Tax for passenger cars from OMSP, WLTP CO2 and NOx emissions.

Ireland VRT calculator

Estimate passenger-car VRT from OMSP, CO2 and NOx.

Revenue uses OMSP, not necessarily your purchase price.

Vehicle details

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

For Ireland VRT, use 0 only when the vehicle is fully electric.

The year the vehicle was first registered abroad or new.

The year you expect the tax calculation to be assessed.

Irish Revenue determines the OMSP and final VRT at registration. A market sale price may not match the official value.

Estimated tax
€4,025
CO2 charge
€3,850
NOx charge
€175
Effective rate
18.3%

Tax breakdown

Taxable value€22,000
CO2 charge€3,850
NOx charge€175
Estimated tax€4,025

Formula details

CO2 formula17.5% x OMSP, minimum €350
NOx formula0-40 mg x 5, 41-80 mg x 15, above 80 mg x 25
Tax age, years5

Official source links

Irish Revenue VRT ratesIrish Revenue NOx charge

Ireland VRT 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 Ireland VRT Calculator

Use this Ireland VRT calculator to estimate Vehicle Registration Tax before registering a car in Ireland. Enter the OMSP, WLTP CO2 figure and NOx emissions to see the CO2 charge, NOx levy and total VRT estimate. The calculation runs in your browser, so your values stay on your device.

Ireland VRT Calculator features

  • 01

    CO2 band and minimum charge

    The calculator applies the Irish Category A CO2 percentage bands and minimum VRT amounts for passenger cars.

  • 02

    NOx levy included

    Add measured NOx in mg/km or leave it blank to see how default NOx charges can change the estimate.

  • 03

    Private planning tool

    Everything runs locally in your browser and links back to Revenue guidance for final checks.

Ireland VRT Calculator FAQ

How is Ireland VRT calculated?
For passenger cars, Revenue applies a CO2 percentage to the Open Market Selling Price and then adds the NOx charge. The final OMSP is set by Revenue.
What is OMSP for VRT?
OMSP is Revenue's Open Market Selling Price for the vehicle in Ireland. It can differ from the invoice or auction price.
Does VRT include the NOx levy?
Yes. NOx is a component of VRT for Category A cars except fully electric vehicles.
Can I use a UK purchase price instead of OMSP?
You can use it for a rough scenario, but the official calculation uses Revenue's OMSP.
Is this an official Revenue calculator?
No. It is an unofficial browser-only estimate for budgeting before you check the official Revenue process.

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