What makes a JCT Pay Less Notice legally valid? Under Section 111 of the Construction Act and JCT subcontract conditions, to pay less than the notified sum, a payer generally must meet the applicable timing and service requirements, and state the sum considered due alongside its basis of calculation. The explanation must be sufficiently clear to be understood in its commercial context.
Few commercial events cause more acute disruption to a subcontractor’s cash flow than an unexpected valuation deduction. Unclear contra-charges, off-site material exclusions, or unagreed set-offs can severely impair your operating margin for the month.
Understanding how statutory notice mechanisms intersect with unamended and bespoke JCT subcontract terms ensures you assess deductions objectively, enforce payment obligations, and avoid needless revenue loss.
1. Timing, Service, and Basis: The Pillars of Validity
The Timing and Service Requirement
A Pay Less Notice is ineffective if it is served late or via an unauthorised method, regardless of how accurately the deduction is calculated. Under standard unamended JCT DBSub/C conditions, the payer must serve the Pay Less Notice no later than 5 days before the Final Date for Payment. Some bespoke amendments may shorten this period to 3 days, 2 days, or even 1 day before the payment deadline. Furthermore, the notice must be served strictly in accordance with the contract’s specified service methods and notice addresses.
The Basis of Calculation
In addition to being on time and properly served, the notice must state the sum the payer considers due and the basis for that figure. The explanation must be clear enough to understand in context, including the payment application and any documents the notice refers to.
The notice does not automatically fail because it lacks a line-by-line calculation or copies of every supporting document. A bare figure with no understandable explanation may be challenged, but whether a particular notice is effective ultimately depends on its wording, the contract terms, and the surrounding payment documents.
If no effective Pay Less Notice is served in time, the relevant notified sum may need to be paid for that payment cycle, subject to the applicable contract and statutory payment regime. Do not assume that this finally determines the true value of the work; a later true-value dispute may still be possible.
2. Contextualising Deductions: An Illustrative Example
Consider an illustrative scenario where a subcontractor applies for £65,000 net, and the main contractor issues a notice stating the sum payable is £46,500 due to an £18,500 deduction.
- Defective Basis: A notice that simply states “£18,500 contra-charge” with zero explanation or reference to any underlying communication provides no understandable basis and may be open to legal challenge.
- Sufficient Explanation: A notice that references specific site inspection sheets, refers back to an identified breakdown sheet, or identifies quantified remediation costs can be effective, even if the subcontractor disputes the underlying commercial merits.
Any example amount, such as an £18,500 deduction, is hypothetical unless supported by a real, documented case. Actual payment rights and notice outcomes depend on the contract, the payment documents, and the underlying facts.
3. Recording Instructions and Site Variations
Many Pay Less Notice deductions arise from disputed site variations where works were undertaken on verbal instructions without contemporaneous records.
Some JCT subcontract forms contain a procedure for confirming directions given other than in writing. Where that procedure applies, the subcontractor may need to confirm the direction within the stated period, and the contractor may have a corresponding period to dissent. Check the exact form, edition and amendments before relying on it.
A Confirmation of Verbal Instruction (CVI) can help record or confirm an instruction or variation. Its contractual effect depends on the applicable contract terms, who issued the instruction, and whether the contract’s procedures for recording and serving it were followed. A generated document is not automatically legally binding. Check the exact subcontract before relying on verbal directions.
Respond to Payment Notices and Deductions Formally
The toolkit includes these templates and review resources:
- Payee’s Notice in Default template, Section 110B, for applicable situations where the payer has failed to give a required payment notice.
- Payment dispute response template for Section 111 matters, for responding formally to a payer’s notice of intention to pay less.
- Pay Less Notice review checklist, to help audit the notice date, amount stated, calculation basis, and relevant contract terms.
- Suspension notice template, Section 112, for use only where statutory conditions are met and applicable contract requirements have been checked.
A Section 110B notice is distinct from an ordinary payment application. Check the required notice, timing, and content before relying on either. A Section 111 response template is a practical response resource, not a separate statutory notice procedure.
These are general templates and checklists. They do not decide whether a sum is due, whether a notice is valid, or whether suspension is available in a particular dispute. Check your executed subcontract and service rules before use.
Toolkit: £37. Includes a £37 credit voucher toward the first month of the Commercial Retainer on Trade Contracts Simplified. The voucher is valid for 30 days from purchase, with one redemption per customer.
Frequently Asked Questions About JCT Pay Less Notices
What must a JCT Pay Less Notice explain to be valid?
Under Section 111 of the Construction Act, a Pay Less Notice must state the sum the payer considers due and the basis for that figure. The explanation must be clear enough to understand in context, including referenced contract documents and payment applications. A bare figure with no understandable explanation may be challenged.
Does a defective Pay Less Notice mean the full application sum is payable?
If no effective Pay Less Notice is served in time, the relevant notified sum may need to be paid for that payment cycle, subject to the applicable contract and statutory payment regime. However, do not assume this finally settles the true value of work, as a subsequent true-value dispute may still be opened.
How should site instructions and variations be confirmed under JCT subcontracts?
Some JCT subcontract forms contain a procedure for confirming directions given other than in writing. Where that procedure applies, the subcontractor may need to confirm the direction within the stated period, and the contractor may have a corresponding period to dissent. Check the exact form, edition and amendments before relying on it.