The business privilege/mercantile tax is the tax levy for the privilege of doing business in the Borough of Sewickley. The tax is the rate of tax on each and every dollar of a business transaction within the corporation limits of the Borough, and shall be 1 mil. Shall mean $1 per $1,000 of gross placed upon the earnings. Berkheimer Associates collects the business privilege tax/mercantile tax and can be reached at 1-800-360-3075.