Economy Interest on tax under GST – Myth decoded Updated : September 16, 2020 02:28 PM IST Litigation related to interest among other issues mainly hovers around its applicability, period, tax amount or rate. The primary debate relates to section 50(1) of the Central Goods and Services Tax Act, 2017 (CGST Act). 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.