Mission
Vendor Account Status System (VASS)
GSA Per Diem Rates
IRS Tax Forms

Mission

The Accounts Payable (AP) Department supports the missions or ORNL, and the Business and Information Services Directorate by providing accounts payable services. These services include the authorization of payments to vendors and other third parties for purchases made through the formal procurement system or those approved for payment by an authorized ORNL representative. The AP Department provides cost data to SAP in compliance with applicable company policies, procedures, and federal laws.

Vendor Account Status System (VASS)

The AP Department implemented the VASS automated system to assist vendors and other AP customers with questions concerning payment activity. Information on the system is available 24 hours a day and can be accessed by calling 865-241-4151 or using the VASS system. The system provided instructions, options and the purchase order number is required to access payment information.

IRS Tax Forms

As a withholding agent for the United States Income Tax, UT-Battelle is required to withhold United States Income Tax from certain payments unless an exemption applies to the payment.  Additionally, Internal Revenue Service requires us to annually report such withholdings and exemptions.  Please complete the applicable form using the links below.  Payment may be withheld pending receipt of the form.

     Domestic Vendor

• W-9 Form Request for Taxpayer Identification Number and Certification

  If your company is an LLC, please be sure to check the appropriate tax classification on the form. Additionally, if your company is an LLC with the tax classification of "corporation", submit a copy of your IRS Determination letter with the completed W-9 form. If we do not receive a copy of the letter, your company will be classified as an LLC and receive a 1099 form from us at the end of the year.

  E-mail completed W-9 Form to aptax@ornl.gov or fax to 865-241-5507