R.I. Gen. Laws § 46-12.8-19: Tax exemption.

Bonds issued by the agency and local governmental obligations issued by any local governmental unit in accordance with this chapter, their transfer, and the income therefrom, including any profit made on the sale thereof, shall at all times be exempt from taxation by and within the state. The agency shall not be required to pay any taxes, assessments, or excises upon its income, existence, operation, or property.