If homebrew and home winemaking is legal in your state you need to consult your state regulation. Homebrew and home winemaking are not legal in every state. Bizarre. But, many states follow the federal rule, there are clear guidelines, limitations and restrictions. And State and Local Laws may be far more restrictive than the Federal Law. The bottom line is you need to know how the law for each craft applies to you at the state level.
Here is a link to the Federal statute on homebrew, and the page also allows you to quickly access State regulations...
http://www.homebrewersassociation.org/pages/government-affairs/statutes/united-states
For federal regulation on wine....
You can do a search for Alcohol and Tobacco Tax and Trade Bureau, Title 27, Vol. 1, Part 24.75 if you'd like. But here's the basics of it as far as wine goes...but again check your State regulations.
Title 27, Vol. 1, Part 24.75
(a. ) General: Any adult may, without payment of tax, produce wine for personal or family use, and not for sale.
(b. ) Quantity: aggregate amount... (1) 200 gallons per calendar year for a household in which 2 or more adults reside, or (2) 100 gallons per calendar year if only 1 adult resides in the household.
(e. ) Limitation: This exemption should not in any manner be construed as authorizing the production of wine in violation of state or local laws, and does not apply to partnerships, corporations, or associations.
(f. ) Removal: Wine produced under this section may be removed from the premises where made, for personal or family use including organized affairs, exhibitions and competitions, such as home winemakers contests, tastings or judgings, but may not under any circumstances be sold or offered for sale.