Business Services

Accounts Payable

The Business Services Accounts Payable division is located in Sherman Hall 220. Accounts Payable can be contacted by phone at 309-298-1811; fax 309-298-2811; or email

Accounts Payable processes Direct Pay Authorizations and Travel Vouchers among many other things.  Please allow 3 to 5 business days for payment processing once documents are received in Business Services.  Incomplete or incorrect documentation will cause longer processing times. Guidelines enforced by the Business Office come from State Regulations or policies established by the Board of Trustees and/or WIU administration.

Account Numbers

  • Odd Year (FY17) use appropriated 1-xxxxx
  • Even Year (FY16) use appropriated 2-xxxxx


  • Invoices for items ordered through the Purchasing Office should be mailed to the Purchasing Office, SH227
  • Invoices for items not ordered through the Purchasing Office should be sent to the department placing the order. Please notify vendors to send invoices directly to the department and not Accounts Payable.

Direct Pay Authorizations