Beginning May 1, interest at 1% per month will be charged against the full year tax owing. In addition to the interest, on June 1, a 3% penalty will be charged against the full year tax owing and on December 1, another 8% penalty will be charged against the full year tax. Although interest continues to accrue as long as the tax remains delinquent, the penalty will not rise above a total of 11% (3% after June 1 and an additional 8% after December 1). (RCW 84.56.020) These interest and penalty amounts apply to both Real and Personal Property, however the full year Personal Property amounts plus interest and/or penalties and collection costs must be paid if the first-half payment is not paid by April 30. You may still pay the first half payment of a Real Property tax plus interest and penalties up through the October 30. Exact amounts due may be obtained by calling the Assessor-Treasurer’s Office at (253) 798-6111.