tax-deductible

[taks-di-duhk-tuh-buh l] /ˈtæks dɪˌdʌk tə bəl/
adjective
1.
noting an item the value or cost of which is deductible from the gross amount on which a tax is calculated.
British Dictionary definitions for tax-deductible

tax-deductible

adjective
1.
(of an expense, loss, etc) legally deductible from income or wealth before tax assessment