example (estimate)
march month gstr 3b aft due date till 15 days is nill interest
aftr 15 days till 30 days 9 % cgst ,9%,sgst 9%,igst 9%
paid after 45 days like 15+30 days
example payment made on 46 days delayed
in this case 18 % interest applicable
on 1 days or 46 days ..