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.” This page is intended to provide you with key financial information on revenues and expenditures. You will also find annual audits from the Controller's Office.

The table below shows Measure K revenues and expenditures since its 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
Total $694,532,669 $506,185,092

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.

The table below shows expenditures by category.

Category FY 2013-14 FY 2014-15 FY 2015-16 FY 2016-17 FY 2017-18  FY 2018-19 FY 2019-20 FY 20-21
Public Safety $228,119 $1,285,944 $4,511,842 $8,030,731 $13,526,145 $33,653,264 $14,645,131  $3,779,509
Health and Mental Health $11,357,884 $13,588,188 $2,071,031 $5,878,153 $11,538,359 $5,600,113 $5,965,617  $7,063,202
Youth and Education $2,034,153 $4,657,981 $7,707,190 $9,848,136 $16,666,482 $17,105,593 $12,878,528 $13,919,562
Housing and Homelessness $2,105,830 $1,656,064 $5,329,043 $17,124,988 $19,331,031 $24,283,097 $21,349,860 $20,178,158
Parks and Environment $281,331 $2,924,610 $2,307,862 $2,992,735 $2,321,755 $3,868,171 $9,058,079 $5,849,702
Older Adults and Veterans Services   $228,074 $2,137,474 $2,814,243 $2,742,400 $2,905,249 $3,233,278 $2,537,641
Community Services $7,386,592 $12,055,345 $20,017,342 $10,455,720 $20,043,590 $12,462,300 $8,206,941 $13,459,040
District Specific/Discretionary/Loans       $1,055,009 $2,247,098 $2,722,469 $7,069,937 $3,182,168
Totals $24,113,909 $36,396,204 $44,081,784 $58,199,715 $88,416,871 $102,600,256 $82,407,371  $69,968,983

Note: Initiatives funded by Measure K are placed in a category (Public Safety, Parks and Environment, for example) for ease of tracking and to help determine community impact. District Specific/Discretionary refers to expenditures recommended by a member of the Board of Supervisors (and approved by the full Board) to meet unanticipated or unmet community needs.