GST roll-out may prove to be a bumpy ride for small businesses in Tamil Nadu, Andhra Pradesh and Telangana, according to multiple businesspeople ET spoke to. While larger companies have either already aligned their systems with GST or are in the last leg of the process, uncertainty looms over small businesses, say industry associations that expect the “transition will be painful for SMEs.” “Small and medium enterprises are jittery about the transition,” said A P K Reddy, president, Federation of Small and Medium Enterprises. “SME sector has been using basic tallying technologies only. That may create some issues with GST compliance. While a majority of them have got the GST numbers, we’re all jittery about complying with the return processes.” There is also the threat of cost increase for small pharmacies that run on thin margins. “We expect the spillover of a price increase will not reach retailers or end-customers, but there is always an element of uncertainty,” said Rajesh Nandi