A subcontractor goes quiet on site. Resourcing thins out. Queries about valuation timing start arriving more often than usual. Long before a project runs into real trouble, its cash flow is already telling the story. Interest rates, material cost inflation and tightening lender conditions get discussed as economic headlines, but on a live project they show up somewhere much more specific: whether money is actually moving through the supply chain on time. Our Senior Quantity Surveyor, Laura Pankhurst, explains how here’s where we consistently see the pressure land, and what tends to get missed.
Payment terms absorb the pressure instead of addressing it
When margins tighten, payment terms are often the first thing to move. Extended payment periods, delayed certification, and slower turnaround on valuations all push the cash flow problem further down the supply chain rather than solving it. A main contractor under pressure from their own client can end up passing that same pressure onto subcontractors, who have far less capacity to absorb it.
The result is a chain where everyone is technically owed money on time, but nobody is actually being paid on time. That gap between contractual entitlement and cash in hand is where real financial strain builds and can be a breaking point for smaller subcontractors. A project doesn’t have to make a loss to create a cash flow problem. A small margin combined with slow payment and rising costs can still place a significant pressure on working capital.
Retention is held long after the risk it covers has passed
Retention exists to cover defects risk. In practice, it’s often held well beyond practical completion, sometimes into the following financial year, with no active tracking of when it’s actually due for release. For subcontractors operating on tight margins, that retained cash can be the difference between healthy cash flow and an actual liquidity problem, particularly across multiple concurrent projects.
Tracking retention release dates as rigorously as payment applications is a simple discipline that gets overlooked more often than it should.
Fixed price contracts don’t always reflect fixed price risk
Material cost volatility over recent years has exposed how many fixed price contracts were agreed without proper fluctuation or index-linked mechanisms. When costs move significantly after a price is fixed, someone absorbs the difference, and it’s usually whoever has the least contractual protection and the least ability to renegotiate, further down the supply chain. It’s worth checking, before signing, whether a fixed price genuinely reflects fixed price risk or is simply a number agreed under conditions that have since moved on.
Warning signs get noticed too late
Subcontractor insolvency rarely happens without signals beforehand: slower response to instructions, requests for early payment, reduced resourcing on site, or repeated queries about valuation timing. These signals are often visible well before a formal insolvency notice, but they tend to get treated as individual issues rather than read together as a pattern.
Individually, these look like routine site issues. Read together over a few weeks, they’re usually the clearest early warning a project gets, well before any formal insolvency notice arrives.
The underlying issue
Economic pressure on a project rarely announces itself as a single dramatic event. It shows up gradually, in payment timing, retention practice, and contract terms that were fair when signed but haven’t kept pace with changing conditions. Managing it well means keeping cash flow under regular review across the life of a project, catching those signals early, before they compound into something harder to fix. If a subcontractor does enter administration, the consequences can extend well beyond the unpaid account: unfinished work, materials on site, plant, warranties, programme delays and the cost of finding a replacement subcontractor can all become issues.
Get in touch
If any of this sounds familiar on a project you’re involved with, our team can help you get ahead of it. Get in touch with ST1 Consulting to talk through your cash flow position before it becomes a bigger problem.