Due date for 3b gstr for April month

If you've opted for monthly GST returns, the standard due date for filing your GSTR 3B for April is the 20th of May. However, for businesses with a turnover under £5 crore, the deadline is extended to the 4th of June without incurring interest. Late fees are waived until the 19th of June for these businesses, and interest is nil for the first 15 days, then 9% for the next 15 days, and 18% thereafter.