Commutation of Tax Law and Legal Definition

Commutation of tax means an abatement of a tax. It is the payment of a designated sum for the privilege of exemption from taxation, or the selection in advance of a specific sum in lieu of an ad valorem tax. The right to commute is an incident of the right to exempt, and the denial of power to exempt prevents the existence of the power to commute. [Hogg v. Mackay, 23 Ore. 339 (Or. 1893)].