You are not required to hold a seller's permit if all your sales are made exclusively in interstate or foreign commerce, and you make no sales in this state. Who must obtain a seller's permit?What does engaged in business mean? This is the total of state, county, and city sales tax rates. Use our calculator to determine your exact sales tax rate. If you are not registered for GST, make purchase order which will show all prices as GSTinclusive and make no mention of GST. This guide includes general information about the Massachusetts sales and use tax. The Church of Christ considered in reference to its members, objects, duties, officers, government, and discipline. no. HomeMarketsePaperQuick ReadsPrime. Esperanza Butler Real Estate Expert Short Sale Properties.