CT.gov Home das For Agencies and Municipalities State Vehicles State Fuel Card Program Current: Fees/Payment State Fuel Card Program Overview Eligibility How To What's Next Fees/Payment Order Pay Options Documents/Forms Related Resources FAQs Contact Fees/Payment See Fuel Card Contract Exhibit B The agency's accounting unit/business unit is responsible for processing payments to WEX, Inc. WEX Cards. The full amount of the Fuel Card invoice must be paid by the due date.