Representative image from file. The government on Saturday hiked windfall gains tax on export of diesel and ATF and slashed the levy to zero on petrol for the fortnight beginning October 31. For ATF exports, the duty has been hiked marginally to ₹11/litre, from ₹10.5/litre for the fortnight. The rate of special additional excise duty (SAED), along with road and infrastructure cess on export of diesel, will now be ₹11.5 a litre, up from ₹8.5 a litre.