《精神健康服务法案》（MHSA）于 2004 年作为第 63 号提案通过，于1年2005月生效，并设立了精神健康服务基金 (MHSF)。 超过一百万美元的个人收入征收 1% 的税，所产生的收入将存入 MHSF。​​ 

MHSA 致力于解决广泛的预防、早期干预和服务需求，并为社区心理健康系统的基础设施、技术和培训提供资金。 MHSA 指定了五个必需组件：​​ 

• 社区服务和支持（CSS）​​ 
• 预防和早期干预（PEI）​​ 
• 创新（INN）​​ 
• 资本设施和技术需求 (CF/TN)​​ 
• 劳动力教育与培训（WET）​​ 

On a monthly basis, the State Controller’s Office (SCO) distributes funds deposited into the MHSF to counties. Counties expend the funds for the required components consistent with a local plan, which is subject to a community planning process that includes stakeholders and is subject to County Board of Supervisors approval. Per Welfare and Institutions Code (W&I) Section 5892(h), counties with population above 200,000 have three years to expend funds distributed for CSS, PEI, and INN components. Counties with less than 200,000 have five years to expend funds distributed for CSS, PEI and INN components. All counties have ten years to expend funds distributed for CF/TN and WET components.​​ 

除地方项目外，MHSA 还批准将高达 5% 的收入用于州政府管理。 其中包括各种国家实体履行的行政职能。​​