State & fed tax id

If I am just starting out, do I need a State tax & Federal tax ID?  I live in NY.  

Thanks!!

[Metalman]

Every state has different rules and laws regarding Tax ID #s.
The big factor for me was that I was making art and work for resale so I was in business.  If I wanted to buy properly and not pay tax on items and materials that I was reselling, I needed the tax id #.  To some degree, this depends on the level of your activity and who you wish to buy from.

[azurefire]

As a sole proprietor you generally need a federal tax id number only if you have employees.  Otherwise your SSN is your tax id.

If you do much selling, you'll probably need a sales tax license.  You should check with your state tax office, and perhaps local ones.  It's different in every state.