Economy Govt working towards a single GST rate, cement to be in lower slab: Jaitley Updated : December 25, 2018 06:54 AM IST A future road map could well be to work towards a single standard rate instead of two standard rates of 12% and 18%, he said. Jaitley said that the government eventually plans to have "GST which will have only slabs of zero, 5% and standard rate with luxury and sin goods as an exception." Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.