Measure K is a countywide half-cent sales tax extension passed by local voters in November 2016 to support essential County services and to maintain or replace critical facilities. It is also known as the “San Mateo County Critical Services Measure.”

It is important that the funds generated by Measure K address community priorities. Transparency is a critical part of keeping this process community-driven.

This page provides key financial information on revenues and expenditures. 

Revenues and Expenditures Since Inception 

Fiscal Year Measure K Revenues Measure K Expenditures
2012-13 $4,397,205 --
2013-14 $75,577,548 $24,113,909
2014-15 $80,598,111 $36,396,204
2015-16 $79,888,971 $44,081,784
2016-17 $83,033,888 $58,199,714
2017-18 $89,602,981 $88,416,871
2018-19 $98,604,386 $102,600,256
2019-20 $94,078,776 $82,407,371
2020-21 $88,750,803 $69,968,983
2021-22 $109,823,249 $77,178,441
Total $804,355,918 $583,363,533

Note: a half-cent sales tax adds 10 cents to a taxable purchase of $20. The additional tax on a $100 taxable purchase is 50 cents.

Prescription drugs and most groceries are exempt from sales tax.

Expenditures by Category Since FY 2012-13 

Category* Total
Public Safety $83,916,838
Health and Mental Health $70,501,355
Youth and Education $99,911,897
Parks and Environment $39,021,917
Housing and Homelessness $130,749,608
Older Adults and Veterans Services $19,169,633
Community Services $117,090,892
District Discretionary $23,001,393
Total $583,363,533

*To promote transparency, all programs and services funded by Measure K are placed in one of the above categories.

Financial Audits

Each year, the San Mateo County Controller's Office provides the Measure K Oversight Committee with a Report on Measure K Sales and Use Tax Revenues:

Fiscal Year July 1, 2021 to June 30, 2022

Fiscal Year July 1, 2020 to June 30, 2021

Fiscal Year July 1, 2019 to June 30, 2020

Fiscal Year July 1, 2018 to June 30, 2019

Fiscal Year July 1, 2017 to June 30, 2018

Fiscal Year July 1, 2016 to June 30, 2017

Fiscal Year July 1, 2015 to June 30, 2016

Fiscal Year July 1, 2014 to June 30, 2015

Fiscal Year June 26, 2013 to June 30, 2014