Can I Factor Progress Payments or Stage Invoices?
Yes, specialist construction factoring providers advance against certified applications for payment and stage invoices. Standard providers often can't handle this, they want invoices for completed, delivered work only. If you're in construction, use a specialist.
Why This Matters
In UK construction, engineering and other project work, most income arrives through progress payments and stage invoices, while the work spans months and cash is needed long before final completion. A typical M&E contractor might invoice £500,000 across six stages on a hospital fit-out, with each certified payment due 30-60 days after valuation.
Without cashflow support, paying subbies and materials upfront while waiting for the main contractor to settle creates a dangerous funding gap. Standard invoice finance providers often refuse these invoices because the underlying work is incomplete and there's no proof of delivery or final sign-off.
Specialist construction factoring providers understand RICS valuations, JCT contracts, payment certificates and retention structures. They'll advance 80-90% against certified applications for payment (AfPs) or architect's certificates, releasing funds within 24-48 hours of certificate approval.
For project-based businesses, the difference between a specialist and a mainstream provider is often the difference between taking on growth contracts or turning them down due to cashflow constraints.
Key Points
- Standard invoice finance providers typically refuse progress invoices because they're not backed by completed, delivered goods or services, creating verification and risk issues they can't underwrite
- Specialist construction factoring providers advance 80-90% against certified applications for payment (valuations under JCT, NEC or bespoke contracts), treating the certificate itself as proof of work done
- Retention clauses (typically 3-5% held back until practical completion) are handled differently: most funders exclude retention amounts from advance calculations, releasing them only when the client pays
- Eligible sectors include construction, civil engineering, M&E installation, fit-out, groundworks, highways, utilities and renewable energy projects where staged invoicing is contractually embedded
- Certificate providers matter: funders prefer RICS-accredited quantity surveyors, architects or named certifiers in the contract over informal email approvals from project managers
- Advance rates can drop to 70-75% on longer-stage projects (over six months per stage) or where the end client has weak credit, because exposure risk compounds over time
- Payment timelines still apply: if your certified invoice is due in 60 days and the client pays late, you're still paying factoring fees during that delay, so client payment discipline affects total cost
Illustrative example
Hypothetical: a Birmingham-based electrical contractor wins a £2.4m contract to wire a new distribution warehouse for a national logistics operator, invoicing monthly over 12 months. Each stage invoice averages £200,000 based on QS certification, with 5% retention held until final completion. Payment terms are 45 days from certified valuation.
Using a specialist construction factoring facility, they draw 85% (£170,000) within two days of each certificate approval. The 5% retention (£10,000 per stage, £120,000 total) remains unfunded until the client releases it at practical completion. This gives them £170,000 upfront each month to pay subbies and materials, instead of waiting 45+ days.
Over 12 months, they maintain smooth cashflow despite the extended project timeline, paying around 2.5-3.5% in total factoring fees on the advanced amounts.
Common Pitfalls
- Assuming any invoice finance provider can handle progress payments: most High Street bank facilities and general factoring platforms explicitly exclude stage invoices or work-in-progress billing in their terms
- Failing to negotiate retention finance: some specialists will advance a percentage of retention against a bond or guarantee, but you must ask upfront as it's not standard
- Ignoring contract wording: funders need clear, measurable milestones and named certification processes in your contract; vague "work completed to client satisfaction" clauses make funding impossible
- Underestimating fee impact on long stages: if a £300,000 stage invoice is certified but the client takes 90 days to pay instead of 45, you're paying factoring fees (typically 0.5-1% per month) for an extra 45 days, eroding margin
- Not separating retention accounting: commingling retention amounts with working capital needs leads to cashflow surprises when the final 3-5% doesn't arrive for 6-12 months post-completion
What to Do Next
- Check your contract terms: confirm you have formal stage payment clauses, named certifiers (QS, architect, engineer) and defined milestones, not just "interim invoicing at our discretion"
- Approach specialist providers: contact providers with a construction finance offer (Bibby Financial Services, for example, says it funds applications for payment) and specifically mention construction/progress payment factoring requirements
- Prepare certificate samples: have copies of previous payment certificates, QS valuations or architect's instructions ready to show funders how your certification process works and who signs off
- Model the cost: calculate total factoring fees over a typical project lifecycle, including delayed payment scenarios, to ensure margin remains viable after financing costs
Related Questions
What's the difference between factoring progress payments and retentions?
Progress payments are staged invoices for work completed to date, certified and due within normal terms (30-60 days). Retentions are amounts (typically 3-5%) withheld by the client until final completion or defects liability ends, often 6-12 months later. Most funders advance against progress payments but exclude retentions unless you arrange separate retention finance with a bond or guarantee.
Do I need a minimum contract size to factor progress payments?
Most construction factoring specialists set minimums around £100,000-£250,000 annual turnover or £25,000-£50,000 per individual stage invoice. Smaller jobs or micro-stages often aren't economical due to due diligence and administration costs. If your typical stage is under £20,000, standard overdraft or business loans may be more cost-effective than factoring.
Can I factor applications for payment before the client certifies them?
Usually not. Most funders want a formal, signed certificate or valuation from the named certifier (QS, architect, engineer) before advancing funds, because your own application is unverified. A few construction specialists go further: Bibby Financial Services, for example, says it supports certified and uncertified payments. Ask each provider how it treats applications that have not yet been certified.
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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