About 99% of goods under the 12% GST slab currently will move to 5%. The rejig will also result in 90% items under 28% tax slab coming down to 18% bracket
Source: https://www.thehindu.com/videos/watch-gst-rate-cut-kicks-in-from-september-22-goods-and-services-to-become-cheaper/article70077970.ece
