R.I. Gen. Laws § 18-6-1: Compensation and expenses of trustee.

Every trustee under any trust instrument, whether previously or subsequently made, shall be entitled to reasonable expenses and costs incurred in the execution of the trust, and also reasonable compensation for services rendered as trustee, which expenses, costs, and compensation may be charged annually or from time to time and may be equitably apportioned between principal and income in a manner that the trustee shall determine.