You withhold retention from a subcontractor’s progress payment. Cash flow’s tight, the job’s behind, and that money just sits in your general account for a few weeks while you sort out other bills. It feels harmless. Under the QBCC’s retention trust account rules, it’s not harmless at all, it’s a breach that can carry fines, demerit points and, in the worst cases, jail time.
Retention trusts are one of the less talked-about parts of the Building Industry Fairness (Security of Payment) Act, overshadowed by project trusts and MFR reporting. But for head contractors on eligible contracts, getting this wrong is one of the fastest ways to end up in front of the QBCC. Here’s what the rules actually require, where contractors slip up, and how to fix it before it becomes a compliance problem.
What a QBCC Retention Trust Account Actually Is
A retention trust account is a dedicated bank account that holds cash retention money withheld from a subcontractor under a construction contract. It sits alongside, but separate from, the project trust account framework under the Building Industry Fairness Act. If you’re a head contractor on a contract that requires a project trust, and you withhold cash retention from a subcontractor rather than accepting a bank guarantee, that retention money must go into its own retention trust account, not your everyday business account.
The account has to be separate from all your other business accounts, notified to the QBCC within the required timeframe, and used only for that purpose. Retention trust accounts don’t apply to every contract; a minimum contract price threshold set by regulation determines whether the obligation kicks in, so it’s worth checking your specific contract value against the current threshold before assuming you’re exempt.
The Five-Day Deposit Rule
This is where most breaches happen. Once you withhold a cash retention amount from a payment, you’re required to deposit it into the retention trust account within five business days. Not five days after you get around to it, not five days after the job’s cash flow settles down, five business days from the withholding.
It’s easy to see how this slips. You process a progress claim, calculate the retention, and the money effectively just stays where it landed, in your operating account, while you deal with the ten other things competing for your attention that week. No one’s trying to rip off a subbie. But the QBCC doesn’t assess intent when it audits a trust account, it assesses the ledger. If the deposit is late, or never happens, that’s a compliance failure on paper regardless of what you meant to do.
- Open the retention trust account before you need it, not after the first retention is withheld.
- Notify the QBCC of the account details within the required timeframe.
- Deposit every withheld amount within five business days, every time, without exception.
- Keep clean records of every deposit, withdrawal and any interest earned.
- Nominate a trained person to administer the account, and notify the QBCC if that person changes.
Release, Reporting and the Annual Audit
Depositing retention correctly is only half the job. Releasing it correctly matters just as much. Retention money has to be released to the contracted party in accordance with the terms of the contract, not held back informally because a defects list isn’t finished or a final invoice is disputed. Failing to release a retention amount without a reasonable excuse is one of the more heavily penalised breaches under the framework, carrying penalties that can include up to 200 penalty units or a year’s imprisonment in serious cases.
On top of the day-to-day discipline, retention trust accounts require an annual account review report, prepared by an independent auditor, submitted to the QBCC. That auditor is obliged to flag any non-compliance they find, which means a sloppy year of late deposits or mixed funds doesn’t just risk a QBCC audit, it gets actively reported to the regulator through your own compliance paperwork.
“The contractors who get caught out on retention trusts are almost never the ones trying to dodge the rules. They’re the ones running the account like a spreadsheet instead of a proper trust, and by the time the annual audit lands, twelve months of small timing errors have turned into one big finding.”
Karen Zhang — QBCC Express Founder
If any of this sounds like how your retention money currently gets handled, informally, out of the operating account, tracked in a spreadsheet rather than a dedicated trust, it’s worth getting it looked at before an audit finds it for you. QBCC Express runs a Strategy Session specifically for contractors who need to get their trust account, MFR and reporting obligations properly compliant, not just technically ticking a box.
Where This Connects to Your Broader Licence Risk
Retention trust breaches don’t exist in isolation. A QBCC finding on your trust account handling can feed into demerit points, and repeated or serious non-compliance can affect your standing when your licence comes up for renewal or review. For company licensees in particular, poor trust account discipline is exactly the kind of thing that surfaces during a broader QBCC compliance check, alongside your MFR position and reporting history. Treating the retention trust account as a minor admin task rather than a core licence obligation is how a small timing issue turns into a much bigger problem down the track.
The fix isn’t complicated, it’s discipline: a genuinely separate account, a five-day deposit habit that doesn’t bend under cash flow pressure, and records tidy enough that your annual audit is a formality rather than an ordeal.
Retention trust rules are unforgiving on the timeline and generous on nothing. If you’re not confident your current setup would survive a QBCC review, don’t wait for the annual audit to find out. Book a Strategy Session with QBCC Express and get your trust account obligations sorted properly.
Frequently Asked Questions
What is a QBCC retention trust account?
It’s a dedicated bank account, separate from all other business accounts, that head contractors must use to hold cash retention withheld from a subcontractor under a project trust contract. It’s a distinct requirement from the general project trust account framework under the Building Industry Fairness Act.
How long do I have to deposit withheld retention money?
Five business days from the date the retention amount is withheld. Missing this window, even without any intent to misuse the funds, is treated as a compliance breach.
Do all contracts require a retention trust account?
No. The obligation applies to contracts that require a project trust and where cash retention is withheld above a minimum contract price set by regulation. Check your specific contract value against the current threshold rather than assuming it doesn’t apply to you.
What happens if I don’t release retention money on time?
Failing to release a retention amount to the contracted party in accordance with the contract, without a reasonable excuse, is a serious breach that can carry penalties up to 200 penalty units or a year’s imprisonment.
Does a retention trust account need to be audited?
Yes. An annual account review report, prepared by an independent auditor, must be submitted to the QBCC. The auditor is required to report any non-compliance identified during the review.
