You must obtain a copy of a "Clearance Certificate" from the person or entity selling the business. When a vendor sells his/her business, he/she must obtain a Clearance Certificate from the ministry to confirm that all taxes collectable or payable by that person have been paid.
No. You may not transfer the Vendor Permit to yourself from anyone as it is registered under their legal name. You must contact your local Ontario Ministry of Revenue Tax Office to obtain your own Vendor Permit.