*Loan,banking and credit>>>income tax

Why do I have to pay income taxes if there is no law documented to say I HAVE to?

In canada, we had legislation that allowed the government to collect income tax untill the war debt was paid. They got used to handling all that money and giving a little back, with election promises, that now it has grown into an institution of it's own. There will never be discontinuence of that law, bet on it.

First of all, your premise is incorrect, there are such laws.

Second, they have guns, and Waco, Ruby Ridge, and the entire Civil War suggests they're willing to use them on you.
There have been many arguments that question the legality of the Federal Income Tax, all have been shot down by the likes of the Supreme Court. We thank Cecil Adams of The Straight Dope for the cite, below, which I hope will set things straight.
http://www.straightdope.com/classics/a5_...
As other responders have correctly noted, there ARE laws, and these are explicitly authorized by the 16th Amendment to the Constitution.