Yes. If you, or your spouse are subject to the tax and did not receive a bill, contact Keystone Collections Group immediately. Call Keystone’s Taxpayer Services Department at 1-866-539-1100, Monday through Friday from 8 a.m. to 4 p.m. Taxpayers who do not pay the occupation tax bill by the end of the calendar year may be subject to penalty, interest and delinquent collection costs.