Can a main contractor deduct Liquidated Damages from your subcontract valuation? A contractor cannot reduce an interim payment to deduct delay damages without serving an effective Pay Less Notice under Section 111 of the Construction Act. To sustain a deduction, the contractor must establish its contractual entitlement under the subcontract, including proving the relevant delay and satisfying any applicable notice and extension-of-time mechanisms.
Opening a monthly payment certificate to discover thousands of pounds withheld under a generic deduction labelled “Contra-Charge: Main Contract LADs Allocation” can severely impact subcontract cash flow.
When commercial schemes run behind programme, main contractors often face liquidated damages under the head contract. When this occurs, commercial teams may look down the supply chain to recover those costs from trade subcontractors through bespoke set-off clauses and contra-charges.
Has a Contractor Deducted Delay Damages From Your Valuation?
If a contractor attempts to deduct delay costs without serving an effective Pay Less Notice on time, the deduction may not reduce the notified sum for that payment cycle. Use my structured commercial templates to review and challenge potentially unsupported delay deductions.
- Section 111 Payment Notice Response Template (.docx)
- Section 110B Payee Notice in Default Template (.docx)
- 10-Point Pay Less Notice Validity Checklist (.pdf)
- Section 112 7-Day Notice of Intention to Suspend Template (.docx)
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1. Technical Authority: How Delay Damages Operate in JCT Subcontracts
It is essential to distinguish between the main contract and the subcontract terms:
- Subcontracts vs Main Contracts: In some standard unamended JCT subcontracts, the contractor may have a claim for direct loss and/or damage caused by the subcontractor’s failure to complete on time. Check the relevant delay and damages clause in the exact form and edition. This represents unliquidated damages, meaning the contractor must substantiate the actual losses incurred. Pre-fixed Liquidated and Ascertained Damages (LADs) are standard in the JCT Main Contract, not standard unamended subcontracts.
- Modern Penalty Rules: Where liquidated damages are inserted into a subcontract, they are a contractually agreed measure of delay-related loss. Their enforceability depends on the wording, the commercial context, and applicable penalty principles established by the Supreme Court in Cavendish Square Holding BV v Makdessi.
- Section 111 Pay Less Requirement: Regardless of whether damages are liquidated or unliquidated, a contractor cannot reduce an interim payment without serving an operative Pay Less Notice specifying the sum considered due and the basis on which that sum is calculated. If the required notice was not effectively served, the deduction may not reduce the notified sum for that payment cycle.
To protect against delay claims, you must serve formal notices whenever site progress is affected. Review the operational rules in my guide on how to draft a JCT notice of delay.
2. Commercial Practicalities: Evaluating Upstream Delay Claims
On live projects, delays rarely stem from a single trade. Overruns frequently cascade: delayed structural works hold up framing, which delays weather-tightness, pushing back internal first-fix trades.
When overall completion slips, main contractors may face liquidated damages from the employer under the main contract. Some commercial teams attempt to divide that penalty and pass shares down across several subcontract packages via contra-charges.
The contractor must establish its contractual entitlement to the deduction, including the relevant delay and any applicable extension-of-time or notice provisions. A blanket set-off may be challengeable, depending on the subcontract terms, the payment notices, and the facts of the programme.
3. Commercial Risk Factors and Loss Aversion
Watch out for these high-risk bespoke clauses in tender schedules that can cause severe revenue loss:
- Uncapped Delay Liability: In commercial negotiations, a subcontractor may seek a negotiated cap on delay liability (e.g. 5% to 10% of the subcontract sum). Without a cap, delay claims can escalate significantly.
- Flow-Down of Main Contract LADs: Be cautious of clauses stating the subcontractor is liable for “all liquidated damages levied against the Contractor under the Main Contract.” Such drafting seeks to pass down financial liability over which the trade package has limited direct control.
- Expanded Cross-Contract Set-Off: Unamended JCT terms limit deductions to claims arising under that specific subcontract package. Some bespoke amendments allow contractors to set off alleged delay costs against separate projects or packages. Learn how to identify these in my guide on JCT subcontract set-off traps and contra-charges.
Identify Bespoke Set-Off and LAD Amendments Before Signing
Avoid signing a subcontract that leaves your trade business exposed to open-ended delay deductions. Use my automated diagnostic tool to inspect draft subcontract schedules for amended delay terms and set-off risks in under 2 minutes.
Audit Your Draft Subcontract in Under 2 Mins →4. Operational Steps to Review a Delay Deduction
If a main contractor deducts delay damages from an interim valuation, consider the following commercial and contractual steps:
- Check the Pay Less Notice Timing: Under Section 111, the contractor must serve an operative Pay Less Notice not later than the prescribed period (typically 5 days before the final date for payment under unamended JCT forms). If served late or lacking an adequate basis of calculation, the deduction may not reduce the notified sum for that cycle. Check the notice against my invalid Pay Less Notice checklist.
- Request Substantiation and Programme Evidence: Request the contractor’s contractual entitlement and programme records demonstrating that your package caused the delay, rather than concurrent delays or upstream disruptions.
- Review Contemporaneous Records: Check whether delay events were notified under the applicable delay-notice clause in the signed subcontract and ensure any verbal directions affecting sequence were confirmed in writing under the applicable subcontract procedure.
Frequently Asked Questions: JCT Subcontract Delay Damages
Can a main contractor deduct delay damages without a Pay Less Notice?
Under Section 111 of the Construction Act 1996, a payer cannot reduce the notified sum payable on an interim valuation without serving an effective Pay Less Notice on time specifying the sum considered due and the basis on which that sum is calculated.
Do standard unamended JCT subcontracts contain Liquidated Damages?
Some standard unamended JCT subcontracts provide for recovery of direct loss and/or damage rather than a fixed liquidated-damages rate. However, bespoke schedules of amendments may seek to insert fixed rates or pass down main contract LADs.
How are liquidated damages assessed under UK law?
Liquidated damages are a contractually agreed measure of delay-related loss. Their enforceability depends on the wording, the commercial context, and applicable penalty principles established by the Supreme Court in Cavendish Square Holding BV v Makdessi.