Wash. Admin. Code § 458-17-101
(2) Which ships and vessels are subject to property taxation? A ship or vessel is subject to the state property tax if the ship or vessel is:
(b) Primarily engaged in commerce and has or is required to have a valid marine document as a vessel of the United States. (See RCW 84.36.080.)
Accordingly, such a ship or vessel is subject to assessment by the department of revenue for that portion of the property tax levied by the state for state purposes.
(3) Which ships and vessels are exempt from property taxation? The following are exempt from all property taxes, including the state levy:
(4) What is the annual derelict vessel removal fee? Except as otherwise provided in (a) of this subsection, an annual derelict vessel removal fee is imposed upon all persons required by RCW 84.40.065 to list any ship or vessel with the department of revenue for state property tax purposes.
(5) What happens if the property taxes and derelict vessel removal fees are delinquent or not paid?
(6) What are a ship or vessel owner's obligations? Under RCW 84.40.065, every individual, corporation, partnership, trust, and estate must list with the department any ship or vessel subject to that person's ownership, possession, or control that is subject to property taxation under RCW 84.36.080. The requirements, penalties, and liens provided in chapters 84.40 and 84.60 RCW for all other personal property apply to ships and vessels listed with the department.
The listed owner of a ship or vessel as of January 1st of the assessment year is responsible for payment of the property tax for that vessel in the following year.
Delinquent taxes and fees, along with all penalties and interest, will be collected by the department according to the procedures set forth in chapter 82.32 RCW for the filing and execution of tax warrants, including the imposition of warrant interest. In the event a warrant is issued by the department for the collection of taxes, derelict vessel removal fees, or both, the department will add a penalty of five percent of the amount of the delinquent tax and fee, but not less than ten dollars.
The department will also withhold the decals required under RCW 88.02.570(10) for failure to pay the state property tax or derelict vessel removal fee.
A ship or vessel is subject to property taxation even if it is temporarily not within the limits of the state on January 1st of the year in which the vessel is to be assessed. If ownership of a taxable ship or vessel is transferred after January 1st, the listed owner as of January 1st remains liable for payment of the full amount of tax payable in the following year. The full year's property tax may be abated only if the ship or vessel is damaged or destroyed and qualifies for a reduction in value under RCW 84.70.010.
For example, Seller A sells a taxable charter boat to Buyer B on August 14, 2013. Because Seller A was the listed owner as of January 1, 2013, Seller A is responsible for the entire year's property tax for the 2013 assessment year. That tax is due by April 30, 2014. Buyer B will be the listed owner for 2014 and responsible for the property tax for assessment year 2014, which is due by April 30, 2015.
(7) What happens if my ship or vessel is out of the state or being repaired during part of the year? A qualifying ship or vessel, referred to as an "apportionable vessel," may have its assessed value reduced in certain circumstances. A reduction in assessed value will reduce the amount of tax due.
(a) What is an "apportionable vessel"? Under RCW 84.40.036, an "apportionable vessel" is a ship or vessel that is:
(b) How is value apportioned? An apportionable vessel has its value apportioned as provided in this subsection.
(i) The value is apportioned based on the number of days or fractions of days that the vessel was within the limits of the state during the calendar year preceding the calendar year in which the vessel is assessed. No value is apportioned to this state unless the vessel is within the limits of the state for more than one hundred twenty days. Days during which a ship or vessel leaves the limits of the state only while navigating the high seas to travel between points in this state are considered as days within this state. A ship or vessel that does not qualify as an apportionable vessel under subsection (5)(a) of this rule may not have its value apportioned, regardless of the number of days the ship or vessel is within or outside the limits of the state.
(ii) Time during which an apportionable vessel is in the state exclusively for one or more of the following purposes is not considered as time within the limits of the state, if the length of time is reasonable to such purpose:
(C) Serving as a tug for a vessel under (b)(ii)(A) or (B) of this subsection.
A "reasonable length of time" includes a reasonable length of travel time to enter and leave the limits of the state exclusively for one of the purposes listed in (b)(ii)(A) through (C) of this subsection. A ship or vessel engaging in any activity or use not described in (b)(ii)(A) through (C) of this subsection, or merely being moored, is not considered to be within the state exclusively for the purposes described in this subsection.
(c) Examples. The following examples illustrate the application of the apportionment rules. These examples should be used only as a general guide. The tax results of other situations must be determined after a review of all facts and circumstances.
[Statutory Authority: RCW 84.08.010, 84.08.070, 84.36.865, 84.36.080, 84.40.065, and 84.56.440. WSR 15-09-023, § 458-17-101, filed 4/7/15, effective 5/8/15. Statutory Authority: RCW 84.08.005, 84.08.070, and 82.01.060(2). WSR 03-16-028, § 458-17-101, filed 7/29/03, effective 8/29/03.]