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. 

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.

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, 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

Financial Statement with Carryover Funds

Each year, Measure K sales tax funds are budgeted -- that is planned to be spent -- on specific projects, programs and services. But each year a share of Measure K funds are either not allocated or are obligated -- but not spent -- from one year to the next. These are called carryover funds.

Measure K Financial Statement with Carryover Funds