R.I. Gen. Laws § 44-7-24 — Legislatively created bodies — Collection of taxes, assessments, and other charges

No legal entity created by the general assembly, which is authorized to collect taxes,
fees, assessments, rates, or other charges, including, but not limited to the Providence
Water Supply Board and the city of Providence, shall refuse to accept cash-in-hand
in payment of taxes, fees, assessments, rates, charges, or any other liability. Any
legislatively created body shall be open for the collection of taxes, fees, assessments,
rates, and charges during reasonable business hours. Failure of any legislatively
created body to accept from any person cash-in-hand in payment of those liabilities
set forth in this section shall discharge that person from the duty to pay that liability.