Proprietor

If I as a proprietor own two business of which one has an annual turnover of 18 lakhs and the other business has a turnover of 7 lakhs. Do i have to pay GST compounding earnings of both the business. I fall in the laundry service category of which the other business is drycleaning. If i fall in the GST slab what will be the GST tax to be levied to my customer.