🛖 Understanding MTA, SDA, and SIL Under the NDIS (and What We Need to Process Claims)

MTA, SDA, and SIL are accommodation-related supports under the NDIS. They are commonly misunderstood and can be higher-risk for incorrect claiming if key details are missing. When invoices don’t include enough context, it can delay processing while we request confirmation.

MTA is generally used when a participant needs temporary accommodation for a limited period due to disability-related circumstances (for example, while waiting for longer-term housing arrangements). It is not intended to replace ordinary housing responsibilities.

To help us process MTA-related invoices, we may request:

• Confirmation there is an agreement in place

• The dates/period being billed

• A clear description of why MTA is required (disability-related context)

• A summary of what was provided

SDA relates to specialist housing designed for participants with extreme functional impairment or very high support needs. SDA is different to everyday rent and living costs.

To help us process SDA-related invoices, we may request:

• Confirmation that the invoice relates to SDA supports (not general rent/living costs)

• The period being billed

• What the charges are for and why the provider is billing them

SIL generally relates to supports provided to help a participant live as independently as possible, often in shared living arrangements. SIL claims often involve staffing ratios and schedules.

To help us process SIL-related invoices, we may request:

• A service agreement

• Dates and a summary of supports delivered

• Ratio justification where relevant (e.g., 1:1, 1:2, 1:3)

• Participant/nominee confirmation that services occurred as billed

To help invoices process faster, include:

• Invoice number, dates, and clear line-item descriptions

• Supporting notes where the support type could be unclear

• Prompt replies to any confirmation requests

If we need more information, we’ll contact the provider and (where relevant) the participant/nominee and Support Coordinator to confirm details.