Final Sourcing Regulations

The Office of the Treasurer & Tax Collector has promulgated final Sourcing Regulations reflecting feedback received from the business community following a public hearing and multiple rounds of updates and public comment periods. These final regulations implement the sourcing rules required under Proposition M (2024) for determining how businesses allocate gross receipts to San Francisco.

View Final Regulations       

Summary of the Regulatory Process: 

  • March 21, 2025 – The Office of the Treasurer & Tax Collector released initial proposed regulations for public comment with a deadline of April 18, 2025 for public comment.
  • April 8, 2025 – A public hearing was held to gather verbal input on the initial proposed regulations. 
  • July 3, 2025Updated proposed regulations were issued, incorporating business community feedback with a deadline of August 29, 2025 for public comment.
  • October 3, 2025 - A second set of updated proposed regulations were issued, incorporating business community feedback, with a deadline of October 17, 2025 for public comment. 
  • October 24, 2024 – Final regulations promulgated, reflecting input from stakeholders across all comment periods.