Payment Notice vs Pay Less Notice: What Subcontractors Need to Know
Understand the difference between a payment notice and a pay less notice in UK construction, with a worked example and subcontractor checklist.
Luke Sanders
IT Developer
Table of contents
Payment notice vs pay less notice is one of the most important distinctions in UK construction cash flow. The words sound similar, both sit inside the payment cycle, and both can affect what gets paid. But they do different jobs.
For subcontractors, the practical risk is simple. If a payment application goes in, and the paperwork that follows is late, unclear, missing, or misunderstood, cash can move from predictable to disputed very quickly. That does not always mean the underlying valuation is wrong. Sometimes the problem is the notice record.
This article is general information, not legal advice. Notice validity depends on the contract, timing, content, service requirements, and facts. If the amount is material or disputed, speak to a construction solicitor or adviser before making formal decisions.
Payment notice vs pay less notice: the plain-English difference
A payment notice tells the receiving party what sum is considered due and how that sum has been calculated. It is part of the mechanism for turning an application or valuation cycle into a stated amount due.
A pay less notice tells the receiving party that the payer intends to pay less than the notified sum. It should state the sum the payer considers due at the date of the notice and the basis on which that sum is calculated.
The key difference is purpose. A payment notice is about identifying the amount considered due. A pay less notice is about reducing what would otherwise be paid against the notified sum.
The statutory framework sits in the Housing Grants, Construction and Regeneration Act 1996. Section 110A covers payment notices. Section 111 covers the payer's obligation to pay the notified sum and the pay less notice mechanism. If the contract does not set a compliant timing rule for the pay less notice, paragraph 10 of Part II of the Scheme for Construction Contracts sets a default period.
For a subcontractor, the commercial point is not to memorise statutory wording. It is to make sure each application cycle has a clear record of the application, due date, payment notice, notified sum, final date for payment, any pay less notice, and the actual amount paid.
Comparison table
What does it do? A payment notice states the sum considered due and the basis of calculation. A pay less notice states an intention to pay less than the notified sum and explains the basis.
When does it appear? A payment notice appears after the due date or at the point required by the contract. A pay less notice appears before the final date for payment, within the contract or statutory timing rules.
Why does it matter? A payment notice helps establish the notified sum for that payment cycle. A pay less notice can change what the payer says will actually be paid.
What should subcontractors check? For a payment notice, check date, amount, basis of calculation, deductions, retention, and whether it matches the application record. For a pay less notice, check date served, amount to be paid, reason for reduction, calculation basis, contract timing, and evidence.
Main risk if ignored. Ignoring a payment notice means the team may not know what has been certified or notified. Ignoring a pay less notice means the team may miss a deadline to challenge, respond, or escalate.
The phrase notified sum matters because it is the amount that should be paid unless a valid pay less notice changes the position. That is why subcontractors should not treat notices as general correspondence. A notice is part of the cash-flow machinery of the contract.
Keep payment notices, pay less notices and applications in one record
BuildQS helps subcontractors track applications, notified sums, deductions, retention and payment status in one workflow, so notice questions do not disappear into email threads and spreadsheets.
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Worked example: one application, two notices
Assume a subcontractor submits Application 7 for £48,000 plus VAT on 1 October. The application includes measured work, an agreed variation, and retention calculated under the subcontract. The contract says the due date is 7 October and the final date for payment is 28 October.
On 12 October, the payer issues a payment notice for £48,000. It agrees the measured work and the variation. In practical terms, the subcontractor's finance forecast now expects the notified sum to be paid by the final date for payment, subject to the contract and any valid pay less notice.
On 23 October, the payer sends a pay less notice saying it intends to pay £39,500. The reason given is that £8,500 of the variation has not been substantiated. The notice includes a calculation showing the revised amount.
The subcontractor now has a commercial question and possibly a legal one. The commercial question is whether the disputed £8,500 is supported by instructions, records, photographs, timesheets, correspondence or valuation backup. The legal question is whether the pay less notice was served correctly, in time, and with the content required by the contract and statute.
BuildQS cannot decide that legal question. What a system can do is keep the facts in one place: when Application 7 was submitted, what amount was applied for, what the payment notice said, when the pay less notice arrived, what deduction was stated, and what documents support the variation.
That record matters because memory is weak when several applications are running at once. If Application 8 is drafted before Application 7 is fully resolved, the team needs to know whether the £8,500 is still being pursued, parked for later agreement, or accepted as a reduction.
Common problems subcontractors see
The first problem is treating a valuation email as if it definitely answers the notice question. An email saying we value this at £39,500 may be important evidence, but the team still needs to check whether it is actually a payment notice or pay less notice under the contract.
The second problem is missing the notice date. A pay less notice is not just about the amount. Timing can be decisive. The final date for payment should be visible to the commercial and finance teams, not buried in the subcontract PDF.
The third problem is unclear deductions. A deduction labelled contra charge, defects, discount, retention, or variation not agreed should be broken down. If the reason is vague, the subcontractor may struggle to decide whether to challenge, provide more evidence, or update the next application.
The fourth problem is disconnected records. The application is in a spreadsheet, the payment notice is in one inbox, the pay less notice is in another, and the retention calculation is somewhere else. That makes it hard to answer a basic question: what are we actually expecting to be paid this month?
The fifth problem is rolling disputes into the next cycle without a note. If a deducted item is still disputed, the next application should make that clear. Otherwise, a live issue can quietly disappear from the commercial record.
Practical checklist before you respond
Start with dates. Record the application date, due date, payment notice date, final date for payment, pay less notice date, and actual payment date. If you do not know the dates, do not guess. Pull the contract, application, emails, and notices together first.
Then check the amounts. Compare the applied amount, payment notice amount, pay less amount, certified or notified amount, retention, VAT, CIS where relevant, and any contra charges or deductions. Separate valuation differences from timing questions.
Next, check the calculation basis. A notice that states only a final figure may not give your team enough commercial detail to respond. You need to know which line items moved and why.
Then gather evidence. For measured work, pull the valuation backup. For variations, pull instructions, agreed rates, daywork sheets, photos, delivery records and correspondence. For retention, check the percentage, cap, practical completion position and release terms.
Finally, decide ownership. One person should own the response deadline. That might be the QS, commercial manager, director or finance lead, but it should not be everyone and no one. If a formal response or adjudication route is being considered, speak to a construction solicitor or adviser.
How BuildQS helps keep the notice record clear
BuildQS is built around the payment application workflow that notices sit on top of. It helps you keep the application, valuation basis, status, deductions and payment outcome together instead of spreading them across disconnected files.
With payment applications, each application can move from draft to submitted, approved and paid. That status trail helps distinguish what has been prepared internally from what has gone to the client and what has been certified or paid.
Notified sums and pay less notices can be tracked against the relevant application. That is useful because a deduction only makes sense in context: which application did it relate to, what amount did it reduce, and did it affect the next application?
Retention and deductions are also easier to monitor when they sit alongside the application they affect. If a pay less notice includes a retention adjustment, contra charge or omitted variation, the commercial effect should be visible without rebuilding a spreadsheet.
BuildQS does not replace legal review and does not decide whether a notice is valid. Its job is simpler: give your team a clearer record so you can see what happened, when it happened, and what amount is still at risk. For more background, read our guides to the notified sum, late payments in construction, and BuildQS payment application statuses.
Frequently asked questions
Is a pay less notice the same as a payment notice?
No. A payment notice states the sum considered due and the basis of calculation. A pay less notice states an intention to pay less than the notified sum. They are related, but they are not interchangeable.
What happens if no payment notice is issued?
The answer depends on the contract, the application, and the statutory payment framework. In some circumstances, the subcontractor's application can become central to the notified sum position. If money is material or disputed, get contract-specific advice before relying on a general summary.
Can I ignore a pay less notice if I think it is wrong?
Ignoring it is risky. First record the date received, amount, stated reasons and calculation. Then check it against the contract and your evidence. If the deduction is significant or you think the notice is late or invalid, speak to a construction solicitor or adviser promptly.
What should I keep for each payment cycle?
Keep the application, valuation backup, payment notice, pay less notice, emails, variation instructions, site records, photos where relevant, retention calculation, final date for payment, payment remittance and notes on any disputed balance. The goal is to make the payment history understandable without relying on memory.
