Government late payment powers: contract and retention impacts for engineers
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
Government plans to ban retention withholding in construction, cap payment terms from large firms to small suppliers at 60 days, and mandate late-payment interest at 8% above the Bank of England base rate written into contracts. The Small Business Commissioner would gain powers to investigate suspected poor payers, adjudicate disputes outside court, and levy “significant” fines in the tens of millions, plus force large companies to publish explanations for poor performance. Construction bodies, including the National Federation of Builders, are pushing for alternative performance mechanisms such as accessible surety bonds or insurance during the consultation on the retention ban’s implementation.
Technical Brief
- Commissioner gains proactive powers to investigate suspected poor payers or misreported payment statistics without a supplier complaint.
- Adjudication powers allow payment disputes to be resolved administratively, reducing reliance on court-based enforcement mechanisms.
- Large late-paying companies can be compelled to publish explanations and corrective actions, creating board-level governance exposure.
Our Take
For construction members of the National Federation of Builders, late‑payment interest fixed at 8% above the Bank of England base rate materially alters cash‑flow modelling on long-duration works, as delayed receivables now carry a defined financial upside that QS and commercial teams can factor into claims strategies.
Compared with other Standard/Guideline-tagged items in our coverage, this UK late-payment framework is unusual in explicitly backing small suppliers rather than setting neutral process rules, which is likely to strengthen subcontractors’ leverage in negotiating payment schedules and dispute resolution clauses with large clients.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.


