Invalid Pay Less Notice Checklist: Reviewing Contractor Deductions Under JCT
When a main contractor issues an interim deduction or Pay Less Notice, do not assume the assessment is contractually conclusive. Under Section 111 of the Housing Grants, Construction and Regeneration Act 1996 and standard JCT subcontract conditions, a notice must satisfy specific statutory and contractual criteria to take effect.
| Potential Vulnerability | Contractual & Statutory Principle | Commercial Status |
|---|---|---|
| 1. Out-of-Time Service | Served fewer days before the Final Date for Payment than required under the subcontract’s reckoning and notice provisions. | Vulnerable to Invalidation (Time-Barred) |
| 2. Defective Basis of Calculation | Fails to provide sufficient information, read in its commercial context, to identify the basis for the sum under Section 111(4). | Vulnerable to Challenge |
| 3. Cross-Project Withholding | Withholds sums relating to a separate project without an express contractual right or established legal entitlement. | Potentially Unauthorised Deduction |
JCT Pay Less Notice Rebuttal & Payment Drafting Pack (£37.00)
When an interim deduction lacks contractual substantiation, prepare a structured written response that sets out your commercial position, requests the basis of deduction, and reserves your rights under the subcontract.
- Commercial Rebuttal Letter Template (.docx): Structured wording to record your position on late notices or unevidenced deductions while reserving contractual rights.
- Payee Notice in Default Guide (.docx): Procedural guidance on Section 110B steps where a payer payment notice was omitted.
- Payment Validity Checklist (.docx & .pdf): Step-by-step checklist reviewing notice timing, calculation requirements, and service provisions.
- Notice of Intention to Suspend Template (.docx): Standard draft notice under Section 112, addressing the statutory minimum 7-day period.
Ground 1: Service Out of Time (Contractual Deadlines)
Under unamended JCT Subcontract Conditions (such as DBSub/C and SBCSub/C Section 4), the standard period for serving a Pay Less Notice is not later than 5 days before the Final Date for Payment, unless the Sub-Contract Particulars or a bespoke Schedule of Amendments state a different period.
To establish whether a notice has been served within the permitted period:
- Identify the contractually defined Final Date for Payment in the executed subcontract (such as 14, 21, or 28 days from the Due Date).
- Calculate the final deadline strictly in accordance with your executed subcontract’s specific reckoning of periods and service provisions, rather than relying on informal calendar estimates.
- Check the notices clause in the applicable contract edition (such as Clause 1.8 in DBSub/C 2016 or Clause 1.7 in DBSub/C 2024), together with any agreed electronic communication protocols. Where a subcontract requires formal service by hand or recorded delivery, sending an email may not constitute compliant contractual service.
If a Pay Less Notice is served after the contractual deadline, the payer has generally lost the right to rely on that notice for that payment cycle. In that scenario, the amount previously notified as due remains payable.
Ground 2: Inadequate Basis of Calculation
Under Section 111(4) of the Housing Grants, Construction and Regeneration Act 1996, a Pay Less Notice must specify two elements:
- The sum that the payer considers to be due on the date the notice is served; and
- The basis on which that sum is calculated.
As confirmed by the Court of Appeal in RBH Building Contractors Ltd v James [2026] EWCA Civ 511, following the established principles in Grove Developments Ltd v S&T (UK) Ltd [2018], a Pay Less Notice must be assessed objectively in its commercial context. The legal requirement is that the notice must provide sufficient information, read in that commercial context, to identify the basis for the sum.
While the law does not automatically require exhaustive forensic proof or every supporting document to accompany the notice, an arbitrary figure that fails to identify an intelligible basis or calculation under Section 111(4) remains open to challenge.
Ground 3: Cross-Project Set-Off Deductions
Main contractors occasionally attempt to deduct sums from one subcontract to balance an alleged loss or contra-charge on a separate project. Under English law, each subcontract is an independent commercial agreement.
Unless the executed subcontract contains an express, unambiguous cross-contract set-off clause—or another specific legal ground applies—withholding sums across separate contracts can be legally and commercially contentious. Always inspect the Schedule of Amendments to verify whether the contractor has introduced bespoke wording permitting cross-contract set-off before accepting the deduction.
Procedural Remedies and Contractual Steps
1. Evaluating Section 110B Payee Notices
Where a main contractor fails to issue the initial Payment Notice within 5 days of the Due Date, and the contract does not provide for the interim payment application to operate as a payee notice, the payee may issue a notice in default under Section 110B of the Act. Whether an interim application becomes the notified sum depends on the exact subcontract terms, the timing of the application, and whether the required default procedure was properly followed.
2. The Right to Suspend Work (Section 112)
If a notified sum is properly due and remains unpaid after the Final Date for Payment, Section 112 of the Act provides a statutory right to suspend performance of subcontract obligations. However, this right requires strict procedural compliance:
- You must provide at least 7 days’ formal written notice of the intention to suspend.
- The notice must state clearly the ground on which performance will be suspended.
- Suspending work without serving the statutory notice, or before the 7-day period has expired, may place the subcontractor in breach of contract.
3. Dispute Resolution and Adjudication
Where a Pay Less Notice is invalid or served out of time and the notified sum remains unpaid, the subcontractor may refer the dispute to statutory adjudication. Under the principle established in Grove Developments Ltd v S&T (UK) Ltd, a paying party that fails to serve a valid payment notice or Pay Less Notice must pay the notified sum before it is entitled to pursue a true-value adjudication.
Structure Your Formal Response
Do not let an unsubstantiated deduction pass without recording your position. Use structured drafting templates to state your calculation, request the factual basis of deduction, and preserve your commercial standing.
Check Future Payment Terms Before Signing
Many payment disputes stem from bespoke amendments introduced before work begins on site. Main contractors frequently modify standard JCT conditions by:
- Shortening the Pay Less Notice window from 5 days to 24 or 48 hours before payment.
- Extending the Final Date for Payment to 45 or 60 days.
- Introducing broad cross-contract set-off rights across separate developments.
Run your draft subcontract schedule through my automated scanner to help flag amended payment terms and notification hurdles in under 2 minutes.
Audit Subcontract Payment Terms →Frequently Asked Questions: JCT Pay Less Notices
What must a valid Pay Less Notice contain under Section 111?
Under Section 111(4) of the Housing Grants, Construction and Regeneration Act 1996, a Pay Less Notice must specify the sum considered to be due at the date the notice is served and the basis on which that sum is calculated, assessed in its commercial context.
What is the deadline for serving a JCT Pay Less Notice?
Under unamended standard JCT subcontract conditions, the default period is not later than 5 days before the Final Date for Payment. However, this timescale is frequently altered by bespoke amendments or Sub-Contract Particulars, and must be calculated using the contract’s specific reckoning and service provisions.
Can a paying party adjudicate true value before paying the notified sum?
Under the principle established in Grove Developments Ltd v S&T (UK) Ltd, a paying party that fails to serve a valid payment notice or Pay Less Notice must pay the notified sum before it is entitled to pursue an adjudication on the true value of the works.