Goods and Services Tax (GST) collections are expected to bounce back to 93,000-95,000 crore, and perhaps more, when returns for March 2018 are filed by April 20.This is against the average of about Rs.87,000 crore in the past five months.Total GST collections — the sum of Central, State and integrated GST — have been on a rollercoaster since the new tax regime came into force in July 2017. After three months of robust collections – in excess of Rs.90,000 crore each month – they dipped in the following two months.