Reduced interest rates for late GST filings offer phased relief for return periods in March and April 2021. Reduction of interest rates for delayed GST payments for March and April 2021 is effective from 18 April 2021 and prescribes staged interest treatment: higher-turnover taxpayers pay a reduced rate for the first fifteen days and a higher rate thereafter; lower-turnover and specified-filer categories receive nil interest for the first fifteen days, a moderate rate for the next fifteen days, and a higher rate thereafter.