Skip to main content
King County logo

King County's Mental Illness and Drug Dependency (MIDD) is a countywide 0.1% sales tax generating an about $134 million per two-year biennium, specifically for programs and services for people living with mental illness and chemical dependency. King County’s MIDD is managed and operated by the King County Department of Community and Human Services Behavioral Health and Recovery Division.

Hands holding plant

What's New

Planned RFP Schedule (As of 12/12/17)

MIDD 2 Service Improvement Plan

MIDD 2 Initiative Descriptions

The plans are large files. Some browsers may have trouble displaying them. If this happens, try right-clicking and selecting “Save As”

2005: The Washington State Legislature created an option for counties to support behavioral health services locally by increasing the local sales tax by 0.1 percent to augment state funding for behavioral health services and therapeutic courts. As required by state law (Revised Code of Washington 82.14.460), revenue raised under the MIDD must be used for new and expanded mental health and substance use disorder services, including King County’s therapeutic courts.

2006: The King County Council began exploring of the possibility of utilizing the tax option in response to shrinking state investment in community-based behavioral health services and corresponding escalation in the use of jails and hospitals for people living with behavioral health conditions.

2007: After significant work in partnership with communities and the Executive, the Council authorized the sales tax levy collection to begin in 2008, with a sunset date of January 1, 2017. King County is one of 23 counties (along with one city) in Washington State that have authorized the tax revenue.

2016: King County Council voted unanimously to extend sales tax collection for MIDD through 2025. The nine-year extension of the tax is expected to generate an estimated $134 million per biennium (two-year budget cycle), and is known as MIDD 2. Also, the Service Improvement Plan for MIDD 2 was approved by King County Council, updating policy goals for MIDD 2.

2017: As called for by the Council, the MIDD 2 Implementation Plan and Evaluation Plan were transmitted in August, building upon and updating the Service Improvement Plan.

The plans are large files. Some browsers may have trouble displaying them. If this happens, try right-clicking and selecting “Save As”

King County's MIDD is guided by adopted policy goals (King County Ordinance 18407) and the Service Improvement Plan (Ordinance 18406). The forthcoming Implementation and Evaluation Plans, due to the Council in August 2017, will further detail operations and assessment components for MIDD initiatives. 

As required by the Council annual MIDD reports are provided to the Council. Find MIDD reports

The MIDD Advisory Committee is an advisory body to the County Executive and Council on matters related to King County's MIDD, as described in Ordinance 18452. The MIDD Advisory Committee is a unique partnership of representatives from the health and human services and criminal justice communities, including providers and other stakeholders. MIDD Advisory Committee meetings are open to the public and comments are welcome.

Find a schedule of meetings and meeting notes from past meetings on the MIDD Advisory Committee page.

As adopted by King County Council, MIDD’s five policy goals updated for MIDD 2 are as follows:

  • Divert individuals with behavioral health needs from costly interventions, such as jail, emergency rooms, and hospitals. 
  • Reduce the number, length, and frequency of behavioral health crisis events. 
  • Increase culturally appropriate, trauma-informed behavioral health services. 
  • Improve health and wellness of individuals living with behavioral health conditions. 
  • Explicit linkage with and furthering the work of King County and community initiatives.

In November 2016, as part of biennial budget deliberations, the MIDD 2 Service Improvement Plan (SIP) was approved by the King County Council. Informed by an extensive community input process and 19 months of analysis and deliberative work by the County, stakeholders, and community members, the SIP is the County’s blueprint for MIDD 2. It outlines the fundamental policies, goals, services, and improvements planned for MIDD 2. As called for by the Council in Ordinance 18407, its appendices also include programmatic and funding recommendations and preliminary information about each of the initiatives recommended for funding.

The County has developed two more plans that build upon and update the SIP. The MIDD 2 Implementation Plan, along with the concurrent MIDD 2 Evaluation Plan, provide the specific, detailed working components of MIDD 2. The three documents work together to provide a full picture of MIDD 2 for policymakers, stakeholders, and the public.

In August 2017, the Implementation Plan and Evaluation Plan were transmitted to King County Council. 

MIDD Implementation Plan

MIDD Evaluation Plan

Approved MIDD 2 Service Improvement Plan (SIP)

King County Council Ordinance 18406 Approving the MIDD 2 SIP

King County Council Ordinance 18407 Revising the MIDD Policy Goals and Calling for the MIDD 2 Implementation and Evaluation Plans

August 2017 MIDD Partner Update


planned RFP schedule table, reflecting plans for program development and/or procurement as of December 2017, provides summary information about possible forthcoming requests for proposal and other potential funding opportunities under MIDD 2. 


We Want to Hear From You!

We welcome your thoughts, suggestions, and questions. Feel free to send us an email, and please visit this website in the future for updates and information.
Contact Us

Phone 206-263-9000

TTY Relay: 711

Fax: 206-296-0583