Antonyms of adj tax-free

1 sense of tax-free

Sense 1
tax-exempt, tax-free, untaxed -- ((of goods or funds) not taxed; "tax-exempt bonds"; "an untaxed expense account")

INDIRECT (VIA nontaxable) -> taxable, nonexempt -- ((of goods or funds) subject to taxation; "taxable income"; "nonexempt property")

Similarity of adj tax-free

1 sense of tax-free

Sense 1
tax-exempt, tax-free, untaxed -- ((of goods or funds) not taxed; "tax-exempt bonds"; "an untaxed expense account")
       => nontaxable (vs. taxable), exempt -- ((of goods or funds) not subject to taxation; "the funds of nonprofit organizations are nontaxable"; "income exempt from taxation")