We just got filed as an official LLC in CT and were wondering how we get our Tax ID number(EIN). We would like to open a bank account for the company and assume we need that to open one.
You can do it on-line at IRS.GOV (here's the direct link to the EIN page ). If you don't want to apply on-line (and get the number instantly), you can instead fill and send the form SS-4 (and wait for the number for several weeks to arrive in the mail).
Make sure to read all the information and the instructions on the site to understand how to fill the form correctly.
IANAL and IANAA, but I would suggest that you conitnue with the CT Dept of Treasury or the equivalent. Registering yourself with the Federal Govt may not cover everything that CT requires.
When I formed my LLC in NJ, I registered with the state. That ID was sufficient for my bank accounts and the LLC was reported under my SSN on my federal taxes, no separate federal tax id.