Ratable /(rāt"ȧ*b'l)/

Rat·a·ble

Ratable

a.
  1. Capable of being rated, or set at a certain value.
    Twenty orae were ratable to [at] two marks of silver.
    — Camden.
  2. Liable to, or subjected by law to, taxation; as, ratable estate.
  3. Made at a proportionate rate; as, ratable payments.

ratable

n.
  1. a structure which may be rated, or set at a certain value, for the purpose of taxation, usually based on the value; as, with the deterioration of the center cities, the loss of ratables worsened the situation by removing valuable sources of tax revenue.