R.I. Gen. Laws § 28-47-12: Premium taxes and assessments.

Each group self-insurer, except any group self-insurer composed of the state, municipal governments, governmental authorities of the state or municipalities, or quasi-municipal subdivisions of the state or municipalities, shall pay premium taxes as close as practicable on the same basis as insurers as provided in chapter 17 of title 44. Each group self-insurer shall pay assessments for the workers’ compensation administrative fund pursuant to chapter 37 of this title on the same basis as is practicable as an insurer.