tax-deductible
Meaning
Able to be subtracted from income or profits before the amount of tax to be paid is calculated.
Structure
Usage
Mortgage interest is often a tax-deductible expense for homeowners.
The company encourages charitable donations by making them tax-deductible.
Keep receipts for all tax-deductible business costs incurred during the trip.
Etymology
The term is a modern compound adjective forged from established English words to meet the needs of financial and legal language. Its first element, "tax," originates from the Latin concept of assessment or charge. The core, "deduct," stems from the Latin deducere, literally "to lead down," which evolved to mean "to take away" in a mathematical or financial sense. The suffix "-ible," indicating capability, is attached to this verb root. Thus, the literal morphemic logic of "capable of being taken away from tax" directly and transparently conveys its precise modern meaning: describing an expense that is legally permitted to be subtracted from gross income before tax assessment.
Analysis
- tax: From Latin taxare ("to appraise, handle, censure"), via Anglo-French taxer and Middle English. In this compound, it functions as a noun modifier meaning "related to a compulsory financial charge." - deduct: From Latin deducere ("to lead down, bring away"), via its past participle stem deduct-. In this compound, it functions as a verb root meaning "to take away, subtract." - ible: From Latin -ibilis, a suffix forming adjectives meaning "capable of, fit for, worthy of."