EIN

If you received a 1099, or 1099-K, with your social security number on it, but it is income that came from your trade or business, you should contact the company and make sure they correct it so that it uses your business tax id, or EIN, in the future.

If you started a PayPal or other type of merchant account in the past and it migrated over to your business, its generally best to start a new one and transition to it.