“Cancel” and “revoke” are the same question asked two ways: after signing the assignment form, can you take it back? The honest answer depends on how far along the claim is.
Before the certificates are created
An assignment is an agreement, not a lock. If the installer has not yet created your STCs, you can ask to withdraw. In practice this means unwinding the discount:
- The installer priced your system on the basis that they would receive the certificates. If you withdraw, they will usually ask you to pay the value of the discount.
- You could then claim the STCs yourself, as owner, through the REC Registry. This requires registering as a person, identity checks and lodging within 12 months of installation.
- Put your request in writing, naming the system address and the date, and keep proof.
After the certificates are created
Once an agent has created the STCs in the registry and transferred or sold them, the assignment has done its work. There is nothing for you to revoke, and the discount stays where it is. If the certificates are later rejected or invalidated, who bears the cost is set by your contract, not by the form. See who is responsible for a failed claim.
What about cooling-off?
If you bought after an unsolicited visit or call, Australian Consumer Law gives you a cooling-off period, generally 10 business days from signing, to end the agreement. That ends the whole purchase, not just the form, and the right applies to the sale type, not to STCs. If you went looking for the installer yourself, there may be no cooling-off at all, so check your contract and your state fair trading office.
What this means for you
Think of the form as part of the deal. If you want out, decide early, write to the installer and expect to repay the discount unless you are within a cooling-off window. If you are being pressured to sign more paperwork than you understand, read the signing guide first.
For wider context see the homeowners guide. Installers who want fewer disputes can tighten their process with the assignment form resource and our pricing page, which shows exactly what rate the claim is based on.
Keep the paper trail
Whatever you decide, keep the signed form, the contract, the quote and every message about the discount in one place. If a dispute does arise, the dates on those documents decide most questions, including whether you were inside a cooling-off window and whether the installer had already created your certificates. Ask the installer to confirm in writing whether STCs have been created yet before you decide anything.