Billing Forms

For any billing questions, please contact Characterization Facility Administration (

Tax Forms

  • UMN signed W-9 Tax Form for your institutions accounting department
  • UMN partially completed MN ST3 Form which provides some sales tax exemption for qualified users (your accounting department must have declared this status to the government).
Analytical services are not subject to sales tax; however, unless the ST3 form is provided there is sales tax for self, hands-on instrument usage (hourly charges). With the ST3, exemption is provided to academics, some government agencies, and companies that provide payments directly to the Minnesota Department of Revenue via the pay forward method. 


For more information about industrial rates, view our Industrial Users webpage and register to work with CharFac.