How Rent Actually Works in SDA Housing (The RRC, Explained)
June 19, 2026
One of the most common questions we hear from new SDA tenants and their families is simple: “so what will I actually pay?” The answer is more predictable than most people expect, because it’s set by a standard NDIS formula rather than negotiated individually.
The formula
Your Reasonable Rent Contribution (RRC) is generally 25% of your Disability Support Pension (or equivalent base income) plus 100% of any Commonwealth Rent Assistance you receive. This applies whether or not your home is SDA-funded — it’s the standard tenant contribution across the NDIS.
What it does not include
If your home is SDA-funded, the SDA price itself — the amount paid for the dwelling — is covered separately through your NDIS plan, not out of your RRC. Your RRC is about your living costs as a tenant, similar in spirit to how rent works in any share house or rental.
It moves with your pension
Because the formula is tied to your pension and rent assistance, your RRC adjusts automatically as those amounts change — you won’t be caught by a rent increase out of step with a change in your income.
For a full worked example and the SDA/SIL breakdown, see our complete funding guide.