Interested in doing business with Hillsborough County Procurement Services? Visit the Bonfire EProcurement platform to register as a vendor, view bid opportunities, or login to your account to submit and track bids.You will also need to submit a completed W9 form. From including everything necessary on your invoice to signing up for direct deposit to get paid, these tips will make the payment process go smoother. All information regarding business registration, purchasing a business, etc. Is available on the Division of Taxation's website here. With this system, vendors will obtain a secure online account to create a vendor profile, update company information, and receive notification of bids. GENERAL PROVISIONS. Purpose. These procedures are publicized in accordance with District policy, applicable State statutory and administrative laws. Do I need a county business tax receipt if I have a business in the City of Tampa?