rat·a·ble 
(rātə-bəl)
(rātə-bəl)adj.
1. Capable of being rated, estimated, or appraised: ratable income.
2. Proportional.
3. Liable to assessment; taxable.
n.
1. Income from taxes on a property: netted the city over $30 million in new ratables.
2. A property or building, especially one used for commercial purposes, that provides tax income for local government: constructed a total of $10 million in new ratables.
rat′a·bili·ty, rata·ble·ness n.
rata·bly adv.