NDIS certification audit cost calculator

Why do certification audit costs vary so much?

Auditors sell days. A certification audit has two stages — Stage 1, an off-site review of your policies, procedures, participant documents and registers, and Stage 2, on-site visits where the auditor observes practice and interviews you, your workers and your participants. Anything that adds auditor days adds cost:

• Dwellings and sites — the biggest driver for SIL. Each home the auditor visits at Stage 2 adds site time (and often travel). A provider with four houses across two towns pays materially more than one shared home in a capital city.
• Participants — sampling grows with the participant group: more files reviewed, more interviews arranged.
• Workers — more staff means more screening records, training evidence and interviews to sample.
• Registration groups and modules — SIL is certification-level (Core Module + the SIL Practice Standards); adding higher-risk groups (like behaviour support) widens scope.
• Your readiness — the hidden multiplier. Gaps found at Stage 1 mean rework, repeat reviews and sometimes re-quoted days. Providers with clean, complete documents move through in fewer billable hours.

What if you only need verification?

Verification is the lighter pathway for lower-risk supports — a desktop review of qualifications, insurance and basic policies, typically well under $3,000. SIL does not qualify: it is always certification. The verification option in the calculator is there for providers comparing pathways across registration groups, or adding lower-risk groups alongside SIL. If you're not sure which pathway your services trigger, the free quiz maps your supports to registration groups and audit type in about two minutes.

What does a realistic total registration budget look like?

Think of registration as three buckets:

1. The audit fee — the calculator's range above, paid to the approved quality auditor across Stage 1 and Stage 2.
2. Preparation — getting the documents and evidence audit-ready. This is the bucket you control: consultants run $3,000–$10,000+, static template kits around $297 plus weeks of your own tailoring, and the SILReady pack $595 for documents personalised to your service (the comparison table in the calculator shows the trade-offs, and our software comparison goes deeper).
3. Incidentals — worker screening checks for your team (roughly $100–$140 per worker in most states — see the state guides for NSW, VIC, QLD and WA), insurance certificates, and your own time for the self-assessment and interviews.

For a single-home SIL provider, a defensible all-in budget is usually $8,000–$15,000; multi-home providers should plan from $12,000 upwards. Payment is also staged in practice — auditors typically invoice across the engagement, so the cash flow spreads over the months the deadline timeline already forces.

How do you keep the quote down?

• Get multiple quotes early. Fees for the same scope genuinely differ between auditors, and calendars are tightening ahead of 1 October 2026 — late bookings have no negotiating room.
• Be specific about scope. Quote requests that state your dwellings, participant numbers, staff count and registration groups get accurate quotes; vagueness gets padding.
• Arrive at Stage 1 complete. The cheapest audit is the one with no rework loop. The audit checklist lists what the auditor expects, document by document.
• Ask how travel is priced. For regional and multi-site providers, travel can be the difference between quotes — some auditors bundle it, some bill it.