R.I. Gen. Laws § 19-5-22

The capital stock, corporate franchises, and personal property, but not the real estate, of credit unions shall be exempt from taxation; provided, however, that every credit union shall annually pay to the general treasurer forty cents (40¢) on each one hundred dollars ($100) deposited with the credit union in the same manner as in financial institutions, the sums to be ascertained from a report to be made by the credit union to the director, or the director’s designee, on or before the fifteenth day in July of each year, of the total amount of the deposits in the credit union on the last business day in June in that year, and to be paid on or before the first Monday in August.