Last updated on August 13, 2025
DoIT Numbers (D Numbers) were discontinued in July 2025 as part of UW–Madison’s transition to Workday. Use DoIT Billing Customer IDs for your DoIT billing needs. Each Billing Customer ID is linked to a Workday Foundation Data Model (FDM) for your unit’s billing.
Find your DoIT billing information
Billing customer ID number lookup
You can find more comprehensive billing system details on our DoIT service billing information page, including an overview of the Billing Customer ID system, DoIT’s rate sheet and explanations of terminology.
Need help?
Email billing@doit.wisc.edu with questions about:
- Finding your Billing Customer ID
- Updating your funding information
- Setting up new services