India has lowered windfall taxes on diesel exports to ₹8.5 ​per litre from ₹14, while the aviation ​turbine fuel duty has been set at ₹7.5/litre, down from ₹12.5. The export duty on petrol ​has been increased to ​₹4 per litre from ₹1.5 ‌to ⁠ensure domestic supply. The new rates will apply from July 1.