Payment of taxes under protest may be made by taxpayer's agent; but protest must be made by or for each taxpayer. A protest may be in the form of a rubber stamp and must set forth all the grounds for the protest, and when it is claimed that the taxes are imposed unconstitutionally the protest is sufficient if it describes the act claimed to be unconstitutional and states that the taxes are collected pursuant to such unconstitutional act. Description of the property used by the treasurer in billing a taxpayer is sufficient for purposes of the protest. County treasurers may not withhold distribution of taxes paid under protest or which are paid under protest and refund of such taxes when in order may be made only pursuant to RCW 84.68.020 or 84.68.110 when applicable.
County treasurers may not withhold distribution to taxing districts of taxes paid under protest, and refund of such taxes, when necessary, may be made only pursuant to RCW 84.68.020 or 84.68.110 when applicable.