plural of deduction

That which is deducted; that which is subtracted or removed / A sum that can be removed from tax calculations; something that is written off

plural of deductible

Eligible to be deducted.

(US, insurance) An amount of expenses that must be paid out of pocket before an insurer will pay further expenses.

The quality of being deductive.

To take one thing from another; remove from; make smaller or less by some amount.

In a deductive manner; using deduction

plural of deductibility

The ability to be deducted, such as from one's taxes