adjective (a)

• (of goods or funds) subject to taxation(adj.all)

  Example:
  Taxable income.
  

  Synonym:
  nonexempt
  Antonym:
  exempt, nontaxable
  

  source: wordnet30
• Capable of being taxed; liable by law to the assessment of taxes; as, taxable estate; taxable commodities.(adjective)

  source: webster1913