USA Comp Consultant working across state lines?

[CompCons]

Hi all,

I am a computer consultant and am planning to form an S-Corp. I currently reside in Florida, but work with a company based in NYC. I never travel to the office in NYC and do all my work remotely in Florida.

I am wondering if I can just create my company in FL, or if I have to register as a foreign company in NY as well, and pay NY taxes on top of FL taxes? Is there any particular case law to support this that you are aware of?

Thanks in advance!