Learn about forming and registering your business online, and how to complete other types of business filings. Register your business (opens in a new tab).Legal advise and agreements for purchasing a business or selling a business. Get our free, updated 2022 checklist for business buyers. Fill out the contact form or call us at (215) 545-4830 to schedule your consultation. Identify the parties involved in the transaction. 2. Here are the basic steps for this transaction: 1) Properly form an LLC. 2) Get an EIN number from the IRS.