What this page should answer
Short answer
Diesel carries a lower tax share than petrol in percentage terms, but the total tax bill on a normal fill is still substantial. This page exists to capture diesel-specific intent and route that audience into the full market explanation.
For the full current answer across petrol, diesel and heating oil, the canonical Tankful research page is How much of Irish fuel prices is tax?.
How to read this topic correctly
Irish fuel-price discussions often collapse several different ideas into one number. The useful way to read them is to separate fixed State charges, VAT, and the non-tax market and supply-chain costs that also shape the final litre.
What to read next
If you want the broadest and freshest version of this topic, go back to the main explainer. If you want live consumer context rather than tax mechanics, move from there into Tankful's live price pages.
FAQ
How much of petrol prices in Ireland is tax?
Using the 6 April 2026 European Commission weekly snapshot, tax and levies were about 95.6 cent per litre, or roughly 50.8% of the average petrol pump price in Ireland.
How much of diesel prices in Ireland is tax?
Using the same 6 April 2026 snapshot, tax and levies were about 86.6 cent per litre, or roughly 41.2% of the average diesel pump price in Ireland.