RCW 82A.04.620: Application of federal Internal Revenue Code.

(1) To the extent possible without being inconsistent with this chapter, all of the provisions of subtitle F (procedure and administration) of the internal revenue code relating to the following subjects apply to the taxes imposed under this chapter:

(a) Timing and amount of tax prepayments under RCW 82A.04.510;

(b) Liability of transferees; and

(c) Time and manner of making returns, extensions of time for filing returns, verification of returns, and the time when a return is deemed to be filed by the department.

(2) The department by rule may provide modifications and exceptions to the provisions listed in subsection (1) of this section, if reasonably necessary to facilitate the prompt, efficient, and equitable collection of tax under this chapter.