PDFRCW 11.104B.300
Receipts normally apportioned—Minerals, water, and other natural resources.
(1) To the extent a fiduciary accounts for a receipt from an interest in minerals, water, or other natural resources pursuant to this section, the fiduciary shall allocate the receipt:
(a) If received as nominal delay rental or nominal annual rent on a lease, a receipt must be allocated to income;
(b) If received from a production payment, a receipt must be allocated to income if and to the extent that the agreement creating the production payment provides a factor for interest or its equivalent. The balance must be allocated to principal;
(c) If an amount received as a royalty, shut-in-well payment, take-or-pay payment, bonus, or delay rental is more than nominal, 90 percent must be allocated to principal and the balance to income; or
(d) If an amount is received from a working interest or any other interest not provided for in (a), (b), or (c) of this subsection, 90 percent of the net amount received must be allocated to principal and the balance to income.
(2) An amount received on account of an interest in water that is renewable must be allocated to income. If the water is not renewable, 90 percent of the amount must be allocated to principal and the balance to income.
(3) This chapter applies whether or not a decedent or donor was extracting minerals, water, or other natural resources before the interest became subject to the trust.
(4) If a fiduciary owns or holds an interest in minerals, water, or other natural resources on January 1, 2022, the fiduciary may allocate receipts from the interest as provided in this chapter or in the manner used by the fiduciary before January 1, 2022. If the fiduciary acquires an interest in minerals, water, or other natural resources after January 1, 2022, the fiduciary shall allocate receipts from the interest as provided in this chapter.