I am new (contractor) to this company and received a notice from the owner saying that an old 940 filing was delinquent. It is from 2016. The owner claims that the IRS also has the entity mis-represented as a "general partnership" even though it is a disregarded entity...LLC. I cannot find the old SS-4 form used to apply for the EIN. How can I determine the true nature of the company in the eyes of the IRS? Also, I know there is a federal form I should fill out to act on behalf of the company in discussions/ correspondence with the IRS, I cannot remember the form or its number...any help is greatly appreciated.
