The summary of payments to nonprofit vendors report previously on this page has been replaced by reports on the Summary of Payments to Vendors pages: http://co.sfgov.org/vpi/reports.aspx .
To get information on nonprofit vendors once you have opened this new web page, click on the reports button and select the checkbox for Nonprofits Only. You have a choice of several citywide reports at various levels of detail.
Or you can search for specific vendors with the search option; the result pages will show you whether the vendor is a nonprofit vendor or not.
Vendors are classified as nonprofit through the business tax registration process.