First enacted in 1990 at 5.5%, this tax was assessed upon two-way communications services. Chapter 158, Laws of 2001, increased the permanent portion of the tax to 4.5% and continued the surtax of 2.5%, resulting in an overall tax rate of 7% for the period beginning July 1, 2001 and ending June 30, 2003. A permanent rate of 7% was passed effective July 1, 2003. Retailers must register with the Department and are required to collect and remit the tax. Communications Services Tax returns must be filed by the provider on the 15th day of the month for the preceding calendar month unless the average monthly liability is less than $100. Any provider/retailer who can reasonably estimate its average monthly liability to be in excess of $10,000 is required to make an estimated payment equal to 90% of the actual tax collected. This payment is due on or before the 15th day of the month during which the liability is incurred.