Indian authorities for Goods and Services Tax (GST) have identified tax evasion amounting to $99.1 million among 17 cryptocurrency exchanges. Nest Services Ltd., associated with the Binance Group, is accused of evasion of $86.8 million. Authorities have already refunded $14.7 million in taxes and penalties. Other exchanges under investigation include Zanmai Labs (WazirX), CoinDCX, and CoinSwitch Kuber. The government is strengthening regulation of the cryptocurrency sector.