R.I. Gen. Laws § 44-44-4 — Filing of returns and extensions of time for filing returns

On or before the twenty-fifth day of the month next succeeding the month in which
any taxes imposed by this chapter are collected, the beverage wholesaler and/or hard-to-dispose
material wholesaler or hard-to-dispose material retailers or person liable for tax
pursuant to § 44-44-3.7, shall pay the taxes to the tax administrator and at the same time shall file a return
in a form that the tax administrator may by regulation prescribe. The tax administrator
may grant reasonable extensions of time for filing returns under rules and regulations
that he or she prescribes. If any taxes are not paid to the tax administrator when
due, or if any return is not filed when due, there shall be added to the taxes and
made a part of the taxes interest at the rate set forth in § 44-1-7 from the date when the taxes became due until the date of payment.