Unless you are a government employee or a corporation or working entity licensed by the government there is great debate on the legality of taxes on ones living person, time and skills.
An excellent book pretty thorough on the subject is Cracking the Code / The Fascinating Truth about Taxation in America written by Peter Eric Henderson.
Here also is an outstanding and interesting video on the subject as well . . .
"America: Freedom to Fascism is a 2006 film by Aaron Russo, which alleges among a variety of claims that income tax is illegal. The documentary covers many subjects, including: the Internal Revenue Service (IRS), the income tax, Federal Reserve System, national ID cards (REAL ID Act), human-implanted RFID tags (Spychips), Diebold electronic voting machines, globalization, Big Brother, taser weapons abuse, and the alleged use of terrorism by government as a means to diminish the citizens' rights.
The Film Determined to find the law that requires American citizens to pay income tax, producer Aaron Russo set out on a journey to find the evidence. This film which is neither left, nor right-wing is a startling examination of government. It exposes the systematic erosion of civil liberties in America since 1913 when the Federal Reserve system was fraudulently created."
Peace to those who love the Lord Jesus Christ