Cost of a community mental health service: a retrospective study on a psychosocial care center for alcohol and drug users in São Paulo.

The federal budget allocation covered 62.1% of the CAPS-ad costs and the remaining 37.9% end up funded by the municipal government. The cost of the intensive package of care was 18 times greater than the non-intensive package. Developing criteria for using services and different packages of care based on patients' needs, and optimizing human resources according to specific actions, may improve people's mental health and avoid wasted resources.