This research report concerns key demand and supply trends affecting Australia’s psychological services workforce delivering treatments under Better Access, which we call psychological services. A key motivator for the research was to analyse the extent to which the main professional groups capable of providing these services could contribute immediately to reducing unmet demand. The underlying rationale was that a lack of appreciation about the psychological services workforce as a whole, beyond those eligible under Better Access, could be impeding consideration of the full gamut of potential workforce solutions.