RCM Interest

Yes... Interest applicable if Payment not paid on or before due date. Also it's applicable to RCM payments...

Yes, Interest applicable...

interest is 18 payableRate of interest on GST tax late payment is 18%. You have to pay interest at rate of 18%. If you have already filed return then there be no late filing fee.

If return itself is not filed then late filing fee is waived from July to September and you have to pay for October and November at Rs. 50 per day.