The Trip Cost Calculator below is designed to help agencies and drivers select the most cost effective available option for state employee business transportation as outlined in the State Employee Business Transportation Policy. Drivers input the number of days or hours and miles for upcoming travel. The calculator displays the associated cost and from there you can choose the form of transportation which is most economical.

Car Rental 

At this time the State of Illinois has not entered into a contract for rental car services. Until the time a contract is in place, when rental car services are required, you must follow your agency's procurement requirements. In most cases, this will mean contacting three (3) vendors and selecting the most economical service based on prices, mileage included, etc.   More detailed information can be obtained by contacting your Agency Procurement Officer.


Section 3000.300 (a) states that all travel shall be by the most economical mode of transportation available considering travel time, costs and work requirements.  Please keep in mind that the following stipulations are still in place when renting a car to be used for official State of Illinois business travel:


  • Only compact or mid-size classes of automobiles can be rented without authorization.
  • Employees must adhere to the refueling policy of the rental company and cannot utilize a fuel pre-payment option.
  • The Collison Damage Waiver or any other type of insurance offered must be declined.  
  • Additional options offered such as GPS, may be accepted for the employee's convenience but will not be reimbursed.


For your convenience, below is a list of the toll free numbers and internet addresses for the primary car rental companies although any company, with the lowest rate, can be utilized.


CompanyToll Free NumberWebsite
Enterprise Rent-a-Car(800)
National Car Rental(877)


Payment methods include personal debit or credit card. Employees will be charged taxes which are reimbursable.


ZipCar Link 


* If a vehicle is used for less than 12 hours, enter the number of hours.
If a vehicle is used 12 hours or more, enter the numbers in days.

** Trip Cost Calculator is based on daily rental rates. The trip cost calculator is for use as a guide to help drivers determine cost effective travel alternatives for individual trips in keeping with state regulations.

Familiarize yourself with your agency’s internal requirements relating to the use of reimbursement and other transportation alternatives as well.

In cases where a state pool vehicle is not available, the next most cost efficient option is recommended.

Enter the duration of the trip in hours or days and the estimated round trip miles, then click on the Calculate button to perform the calculation.

Contact your Agency Vehicle or Travel Coordinator if you require further information or contact Central Management Services, Division of Vehicles for further assistance.