Overall property tax assessments increased by 1.4 percent this year, compared with countywide assessments in 2012.ĭespite the increase in taxes, the county's total assessed value for the 2013 tax year, at $36.4 billion, was down from the year-earlier countywide valuation of $37.5 billion, marking the third consecutive year of declining overall values. Last year's top 50 taxpayers were assessed 7.7 percent of countywide tax bills, which totaled $494.8 million. This year's total tax levy for the top 50 taxpayers is 8.8 percent of the tax bills totaling $501.8 million for all of Spokane County. The top 50 taxpayers also are paying a larger share of the total countywide property tax bill this year than last, a comparison with last year's list shows. 31, says Spokane County Assessor Vicki Horton. The second half of property tax payments were due Oct. The total valuation of properties owned by the top 50 taxpayers was $3.2 billion this year, up 10.5 percent from $2.9 billion in 2012. In all, the bills levied on the top 50 property taxpayers in Spokane County for 2013 totaled $44.2 million, up from $38.1 million in 2012. The collective share of the 50 largest property taxpayers in Spokane County, led by perennial top payer Avista Corp., grew by 16 percent this year to reach nearly 9 percent of the total property taxes levied in the county, according records obtained through the Spokane County Treasurer's Office.