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If you owe less than $5, interest will accrue. A statement will be mailed once the amount due is $5 or more. You will also receive a statement if you have not filed your quarterly report. If your account is overdue and you owe $5 or more, you will get a monthly statement indicating all interest and penalty charges that you owe. Third month - an additional 10 percent of total tax due or $10, whichever is greater.Second month - an additional 5 percent of total tax due or $10, whichever is greater.First month - 5 percent of the total tax due or $10, whichever is greater.A late payment penalty fee is also charged for overdue taxes (RCW 50.12.220 (4) WAC 192-310-030 (5)): If your tax payment is late, you will be charged interest at a rate of one percent of total taxes due per month.
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