Each establishment required to collect self-storage tax shall submit a monthly tax return form by the last day of the month following the month covered by said return, along with a copy of the Illinois Department of Revenue Sales & Use Tax Return (ST-1). Once the form is submitted, the Village will prepare and send an invoice. Similary, the payment will be due 30 days from the date of the inovice. Please direct any questions to accountpayable@tinleypark.org.