1. (1) Determination of ratio for assessed value strata. For each personal property assessed value stratum, excluding properties identified in WAC 458-53-070 (4)(a), an average assessed value, and an average market value shall be determined from the results of selected audit studies. The average assessed value for each stratum divided by the average market value determines the ratio for each assessed value stratum.
2. (2) Determination of indicated market value. The actual total assessed value of the county for each stratum divided by the ratio for each assessed value stratum, as determined by using the calculation set forth in subsection (1) of this section, determines the indicated market value of each stratum for the county.
3. (3) Additional categories. The actual county total assessed values of properties identified in WAC 458-53-070 (4)(a) are added as a separate category to the total county assessed value. A ratio determined for these properties is applied against the total assessed value for the category to determine the indicated total market value for the category.
4. (4) Determination of county indicated ratio. The sum of the actual total county assessed values is divided by the sum of the indicated market values to determine the county indicated personal property ratio.

5. (5) Example. The following illustration, using simulated values and ratios, indicates the ratio computation procedures for personal property.

   STEP 1 - STRATUM AVERAGE VALUE AND RATIO COMPUTATIONS

   		(1)	(2)	(3)	(4)
   Stratum	NumberofSamples	AverageAssessedValueofSamples	AverageMarketValueofSamples	StratumRatio (Col. 2 ÷ Col. 3)
   $ 0 - 74,999		25		$ 17,000		$ 22,000		.773
   75,000 - 249,999		15		124,000		235,000		.528
   Over - 250,000		10		850,000		960,000		.885

   STEP 2 - APPLICATION OF STRATUM RATIOS TO ACTUAL COUNTY ASSESSED VALUES

   		(1)	(2)	(3)
   Stratum	Actual CountyPersonal PropertyAssessed Values	Ratio	County MarketValue Relatedto Actual AssessedValue(Col. 1 ÷ Col. 2)
   $ 0 - 74,999		$21,500,000		.773	$ 27,813,713
   75,000 - 249,999		23,000,000		.528	43,560,606
   Over - 250,000		50,000,000		.885	56,497,175
   WAC 458-53-070 (4)(a)
   Properties		0			0
   Totals		$94,500,000		÷ $127,871,499 = 73.9
   County Indicated
   Personal Property Ratio			73.9	%

[Statutory Authority: RCW 84.08.010, 84.08.070, and 84.48.075. WSR 16-11-031, § 458-53-160, filed 5/10/16, effective 6/10/16; WSR 96-05-002, § 458-53-160, filed 2/8/96, effective 3/10/96; WSR 94-05-064, § 458-53-160, filed 2/11/94, effective 3/14/94. Statutory Authority: RCW 84.48.075. WSR 87-12-029 (Order PT 87-5), § 458-53-160, filed 5/29/87; WSR 86-21-004 (Order PT 86-6), § 458-53-160, filed 10/2/86; WSR 84-14-039 (Order PT 84-2), § 458-53-160, filed 6/29/84; WSR 79-11-029 (Order PT 79-3), § 458-53-160, filed 10/11/79. Formerly WAC 458-52-100.]