How Does the Construction Act Affect Invoice Finance?
The Housing Grants, Construction and Regeneration Act 1996 (Construction Act) gives subcontractors the right to stage payments, payment notices, and adjudication. Specialist construction factoring providers understand these mechanisms and advance against certified applications for payment, not just standard invoices. Pay-when-paid clauses are banned except on insolvency.
Why This Matters
The Housing Grants, Construction and Regeneration Act 1996 (as amended in 2011) fundamentally changed how UK construction businesses get paid, and that directly affects how they finance receivables. Unlike a standard invoice finance arrangement where funds release against invoices with fixed terms, construction firms work with payment applications, retention clauses, and interim certificates.
This creates complexity: a Birmingham groundworks contractor might have £180,000 certified on an application but only receive £171,000 (5 percent held as retention), and payment depends on the main contractor issuing a payment notice within five days. Specialist construction factoring providers advance against these certified applications, not final invoices, because cash flow gaps on 60-90 day certified payments can cripple a subcontractor paying weekly wages.
The Act also banned conditional payment clauses (pay-when-paid), meaning funders can rely on the statutory payment timeline. Specialist construction funders assess certified applications, retention release schedules, and adjudication risk when setting advance rates.
Many generalist invoice financiers decline construction receivables or advance less against them, so for a small subcontractor, choosing a funder unfamiliar with the Construction Act can mean rejection or a much lower advance than a specialist would offer against certified sums.
Key Points
- The Construction Act entitles subcontractors to stage payments (typically monthly valuations) and requires main contractors to issue payment notices within five days of the application, with final payment due 14-21 days later depending on contract terms.
- Pay-when-paid clauses are prohibited except in cases of insolvency upstream, so funders can advance against certified sums knowing the debtor's own payment status is legally irrelevant to the subcontractor's entitlement.
- Retention (usually 3-5 percent held until practical completion, then half released, with the remainder after the defects period) creates a secondary receivable that specialist funders will advance against once the retention bond or certificate is issued.
- Payment notices and pay-less notices under Section 110A mean disputes must follow statutory adjudication (28-day binding decision), so construction factoring providers assess adjudication history and contractual compliance when underwriting.
- Certified payment applications (architect's certificates, engineer's valuations, QS assessments) replace standard invoices as the funding trigger, requiring the funder to verify certification authenticity and cross-reference contract payment schedules.
- Advance rates on construction receivables are set against certified amounts (excluding retention) and are usually higher with construction specialists than with generalist invoice finance providers, some of which decline construction work outright.
- The 2011 amendments extended Act protections to construction contracts that are not wholly in writing (oral agreements now covered, after section 107 was repealed), making adjudication and payment terms even more critical for funder due diligence. Contracts for work of under 45 days still carry no statutory right to stage payments (section 109).
Illustrative Example
Hypothetical: a Leeds-based electrical subcontractor with £900,000 annual turnover submits a monthly payment application for £65,000 to a main contractor working on a hospital refurbishment. The architect certifies £62,000 after £3,000 is held as retention (just under 5 percent), and the contract specifies payment 21 days after certification. The subcontractor has a weekly wage bill of £8,500 and needs cash within five days.
The subcontractor factors the certified application through a specialist construction funder, which advances 85 percent of the certified £62,000 (£52,700) within 48 hours of certification, holding £9,300 in reserve. On day 21, the main contractor pays the £62,000 gross, the funder releases the reserve minus fees (discount charge of 0.6 percent per week on £62,000 for three weeks totals roughly £1,116, plus a £300 service fee), and the subcontractor nets the balance.
At practical completion six months later, the £3,000 retention is released and the funder advances 80 percent (£2,400) immediately, with the remainder following once cleared. These figures are illustrative, not a real client case or any provider's actual terms.
Common Pitfalls
- Assuming a standard invoice finance provider will accept construction receivables. Many generalist funders restrict or decline construction sector applications because of the stage payment, retention and adjudication risks involved.
- Failing to provide payment notices or complying with contract notice requirements. If the subcontractor doesn't issue a valid payment application or the main contractor issues a compliant pay-less notice, the certified sum becomes disputed and the funder will freeze advances until adjudication resolves the matter.
- Ignoring retention release schedules when calculating true advance percentages. A funder advertising '85 percent advances' means 85 percent of certified amounts excluding retention, so on a £100,000 gross application with 5 percent retention, you receive 85 percent of £95,000 (£80,750), not £85,000.
- Using invoice finance against pay-when-paid contracts signed before November 2011 or valid insolvency carve-outs. Although the Act bans conditional payment, historical contracts or upstream insolvency can still create non-payment risk that funders won't cover.
What to Do Next
- Identify whether your debtors are construction contracts within the Act's scope (building, civil engineering, M&E installation). Contracts with a residential occupier fall outside Part II, and work of under 45 days has no statutory right to stage payments, which affects funder appetite.
- Request quotes from specialist construction invoice finance providers and compare advance rates on certified applications, retention funding terms, and their experience with adjudication.
- Audit your payment application and notice processes with a quantity surveyor or construction solicitor to ensure compliance with Section 110 and 110A requirements, because non-compliant applications give funders grounds to reduce or refuse advances.
- Clarify retention release triggers in your contracts and ask potential funders what percentage they'll advance against retention once certified for release, and whether they fund against retention bonds or only cash release.
Related Questions
Can I factor a payment application before the architect or engineer certifies it?
No. Invoice finance providers require a certified application (certificate, interim valuation, or payment notice) as proof the sum is due. Uncertified draft applications carry too much variation risk. Some funders will pre-approve an application subject to certification, allowing same-day release once the certificate arrives, but no advance occurs without third-party verification of the amount due.
What happens if the main contractor disputes the certified amount and issues a pay-less notice?
A valid pay-less notice (issued within the timeframe specified in the contract, typically five days before payment is due) reduces the sum immediately payable. The funder will freeze or reduce the advance to match the undisputed portion. You must then pursue adjudication under Section 108 to recover the disputed balance. If you win adjudication, the funder releases the additional amount once the debtor pays the adjudicator's decision.
Do construction invoice finance providers charge CIS tax as a debtor risk?
No. CIS (Construction Industry Scheme tax deductions) is withheld by the main contractor and paid directly to HMRC, reducing the net payment to you. Funders advance against the gross certified amount but reconcile to the net payment after CIS deduction. You remain liable for the reserve difference if the debtor deducts CIS at 30 percent (unregistered subcontractors) instead of the expected 20 percent. Ensure your CIS registration is current to avoid funding shortfalls.
Founder & Managing Director, Muswell Rose, founder and PSC of Best Business Loans Ltd
Adam is the founder and managing director of Muswell Rose and a founder of Best Business Loans Ltd, the company behind Market Invoice. He spent over three years as managing director of Penny, a UK invoice finance business, and his career runs through insurance, mortgages, commercial finance and fintech lending. He writes the Market Invoice library.
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