In line with the carbon tax increase that become effective on January 1, 2023, from R144/t to R159/t of carbon dioxide equivalent, the carbon fuel levy for 2023/24 will increase by 1c to 10c/l for petrol and 11c/l for diesel, from April 5. The carbon tax cost recovery quantum for the liquid fuels refinery sector increased from 0.63c/l to 0.66c/l effective from January 1.