Psychologist FCA vs OT FCA: Which is Right for Your NDIS Needs?

A Functional Capacity Assessment (FCA) is one of the most valuable tools for demonstrating how a disability impacts day-to-day life and what supports may be required under the NDIS. But families, participants and support coordinators often ask: Should we request a psychologist FCA or an occupational therapy (OT) FCA?

Both professions complete FCAs, but each brings a different focus and expertise. Understanding the distinction helps ensure participants receive the most accurate and relevant evidence to support their NDIS plan.

When to Choose a Psychologist-Completed Functional Capacity Assessment

Psychosocial disabilities

A psychologist FCA is often the most appropriate choice for conditions such as schizophrenia, bipolar disorder, PTSD, severe depression or borderline personality disorder. Psychologists are trained to link symptoms such as thought disturbance, emotional dysregulation or trauma responses to real-world functional impacts.

Neurodevelopmental conditions

For Autism Spectrum Disorder, ADHD or Intellectual Disability, psychologists assess not only observable behaviour but also the underlying cognitive skills, executive functioning, communication and adaptive behaviour. They may use standardised psychometric tools (e.g. WAIS, WISC, Vineland-3, SRS-2, BRIEF-A) to provide a comprehensive developmental profile.

Complex presentations

If a participant presents with both psychosocial and developmental conditions, a psychologist FCA can provide an integrated assessment framework that considers all relevant domains of functioning.

Diagnostic insight

Psychologists may reference DSM-5-TR criteria and provide clinical observations where appropriate. This can help link psychological factors to functional impact, supporting the overall credibility of the FCA.

How to Decide

Primary area of impact:

• Cognitive, emotional, behavioural or psychosocial → Psychologist FCA

• Physical, sensory or environmental access → OT FCA

Type of evidence needed:

• Standardised psychometric testing, diagnostic reasoning, behavioural risk assessment → Psychologist FCA

• Home modifications, task analyses, equipment prescription → OT FCA

Complex or dual needs:

Many participants benefit from both types of assessments. A psychologist FCA provides a broad clinical overview, while an OT FCA offers detailed insight into environmental and functional tasks. Together, they can give the NDIA a comprehensive understanding of a participant’s support needs. Final Thoughts on Psychologist FCA's

Choosing between a psychologist FCA and an OT FCA depends on the participant’s individual profile and the type of evidence needed for the NDIS. In some cases, both assessments provide complementary perspectives.

• A psychologist FCA is best suited when key concerns involve mental health, cognitive functioning, behaviour or neurodevelopmental conditions.

• An OT FCA is best suited when the primary challenges relate to physical, sensory, environmental or equipment-related needs.

A well-matched FCA helps ensure NDIS funding decisions are informed by clear, relevant evidence—supporting participants to access the services and supports that enhance independence, inclusion and quality of life.

Note: Health professionals provide evidence and recommendations, but the NDIA makes final decisions about access and funding in accordance with NDIS legislation and guidelines.