Construction cash flow can involve applications for payment, certification, retentions, variations and disputes. Standard invoice discounting should not be assumed to accept all of these. A specialist construction-finance product may have different rules from an ordinary trade-receivables facility.
Establish what is actually payable
Identify whether the balance is an issued invoice for an accepted debt, an application awaiting assessment, an uncertified variation or a retention. Those are different collection risks. Ask the provider to state which categories it will fund and which documents it needs.
Retentions and deductions
Do not include the full contract value in the expected funding calculation. Retentions, contractual deductions and disputed items can reduce what is eligible or collectible. Keep the ledger aligned with the contract position and report adjustments promptly.
Mobilisation costs
Labour, materials and subcontractor payments may be due before the first eligible receivable exists. Mark that pre-invoice period in the forecast. If invoice finance begins too late to cover it, investigate a separately agreed structure or commercial payment changes rather than assuming future availability fills today's gap.
Main-contractor exposure
A large project may concentrate the ledger with one contractor. Ask how the funder assesses that exposure and any connected entities. Evaluate the effect of delayed certification and payment independently, since either can push cash receipts further into the future.
Prepare contract-specific information
- The signed contract and relevant payment provisions.
- A schedule separating certified debts, applications, variations and retentions.
- Evidence supporting invoices and completion stages.
- Recent payment and dispute history with the contractor.
- A weekly project cash forecast, including tax and payroll.
Compare specialist products carefully
Some providers publish construction-finance services alongside ordinary invoice finance. Ask exactly what is funded, who assesses applications, who collects payment and what recourse remains. Do not assume the product name overrides exclusions in the agreement.
Check the cash forecast before accepting more work
Run a project forecast with one payment cycle delayed and a realistic disputed balance. Check whether the proposed funding still covers wages and suppliers. If a profitable contract creates an unfinanceable mobilisation gap, renegotiated deposits or stage terms may be necessary before taking it on.
This guide identifies commercial preparation points. Contract interpretation and disputed payment rights require advice on the actual documents.
Sources and verification
Published material checked on 24 October 2026. Provider terms can change; confirm them before applying. Examples and comparison methods are our own illustrations.
