R.I. Gen. Laws § 44-23-25 — Settlement of taxes due

The tax administrator, with the approval of the attorney general, may effect a settlement
of the amount of any taxes imposed by chapter 22 of this title as they deem to be
for the best interests of the state, and the payment of amount agreed upon is a full
satisfaction of the taxes; provided, that the settlement and assessment are made only
with the consent of the executor of the will or the trustee under the other instrument,
or, in the case of a transfer by will of real estate, of the persons entitled to the
real estate, or, if the real estate passes to a trustee for those persons, then of
the trustee. The settlement, in accordance with the provisions of this section, of
a tax upon any transfer of property subject to a power of appointment, if the agreement
of settlement provides, precludes the assessment under this chapter or under any act
hereafter passed of any further tax, with respect to the right to transfer, upon or
with respect to the transfer of any property at the time subject to the power, as
a part of the estate of the donee of the power. The agreement is binding upon all
persons taking property subject to the tax, except for fraud or manifest error; and
executors and trustees are expressly authorized to enter into an agreement unless
a contrary intention appears in the instrument defining their powers.