HGCRA Payment Notices Explained: What Every QS Must Know

Miss a single deadline under the HGCRA payment notices regime and the consequences are absolute: a payer who fails to serve a valid pay less notice in time must pay the full sum stated in the payment notice, whatever the true value of the work. A payee who fails to track its own notice rights can lose leverage it never knew it had. There is no discretion built into the statute for a notice served a day late.

The Housing Grants, Construction and Regeneration Act 1996, as amended by the Local Democracy, Economic Development and Construction Act 2009 (in force from October 2011), sets out the framework that governs payment on almost every UK construction contract of more than 45 days' duration. It exists to keep cash moving down the supply chain on a "pay now, argue later" basis, so that valuation disputes are resolved separately from the obligation to pay on time.

This guide walks through what the Act actually requires: who must issue a payment notice and what it must contain, when a pay less notice has to land to be effective, how the statutory deadlines are calculated, what happens when notices are missed (including "smash and grab" adjudications), the right to suspend performance for non-payment, and how all of this connects to the adjudication process that enforces it.

Whether you're a QS administering interim valuations, a commercial manager defending a final account, or a subcontractor chasing a payment that never arrived, the notice provisions in this Act are not a technicality to skim past. They are usually the single biggest lever in any payment dispute.

What the HGCRA Requires and Why It Exists

The Housing Grants, Construction and Regeneration Act 1996 (commonly the "Construction Act") introduced a statutory payment framework for construction contracts across England, Wales, Scotland and Northern Ireland. Sections 109 to 113 apply to any "construction contract" as defined in the Act, whatever label the parties give it, and override any contract term that tries to contract out of them.

The original 1996 Act had loopholes: payers could withhold payment by simply not certifying anything, and "pay when certified" or "pay when paid" clauses left subcontractors exposed to cash flow further up the chain. The Local Democracy, Economic Development and Construction Act 2009 amended the regime, with the changes coming into force in October 2011. The amended Act introduced the payment notice as a standalone requirement (not just a certificate), allowed the payee to issue a default payment notice if the payer failed to, and tightened the rules on pay less notices.

The policy behind all of this is often summarised as "pay now, argue later." Cash must keep moving on the timetable the Act sets, even where one party genuinely disputes the value of the work. Disagreements about the true value of a payment are resolved afterwards - typically through adjudication - rather than being used as a reason to delay payment altogether.

For a QS, this means payment administration is not just a valuation exercise. It is a compliance exercise with hard statutory deadlines that sit alongside, and sometimes override, whatever the contract's payment clause says.

The Payment Notice: Who Issues It and What It Must Say

Section 110A: the payer's payment notice

Under section 110A, either the payer or a "specified person" (often the contract administrator, architect or employer's agent) must give a payment notice not later than five days after the payment due date, unless the contract sets its own period. The notice must state the sum the payer considers to be, or to have been, due at the payment due date, and the basis on which that sum is calculated.

The payee's default payment notice

If the payer or specified person fails to give a payment notice on time, the payee can serve its own default payment notice, stating the sum it considers due and its basis of calculation - typically drawn from its original application for payment. Once served, this default notice carries the same weight as the payer's: unless a valid pay less notice follows, the sum in it becomes payable.

The Pay Less Notice: The Payer's Last Chance to Reduce Payment

Section 111 is the sharpest edge of the Act. Once a payment notice (or default payment notice) has been given, the sum stated in it becomes the "notified sum" - and the payer must pay that notified sum in full by the final date for payment unless it serves an effective pay less notice.

A pay less notice must specify the sum the payer considers due at the date the notice is given, and the basis on which that sum is calculated. Crucially, it must be served no later than the prescribed period before the final date for payment - a period the contract can set, but which defaults to seven days under the Scheme for Construction Contracts if the contract is silent or non-compliant.

There is no cure for a late or defective pay less notice. Case law (including ISG Construction v Seevic College and Grove Developments v S&T (UK)) has confirmed that a payer who misses the deadline, or whose notice fails to state a sum and its basis clearly, loses the right to pay less for that payment cycle - even if the true value of the work is genuinely lower. The remedy is to pay the notified sum first, then pursue a separate "true value" adjudication to recover the difference.

"Smash and Grab" Adjudications: What Happens When Notices Are Missed

When a payer misses both the payment notice and the pay less notice deadlines, the payee is entitled to be paid the full sum it applied for - regardless of the actual value of work carried out. Enforcing that entitlement usually means referring the non-payment to adjudication, a process nicknamed a "smash and grab" because it turns on notice compliance rather than the underlying valuation.

• The adjudicator in a smash and grab claim decides only whether a valid notice was served in time and for the right sum - not whether the work was actually worth that much.
• Payers who lose a smash and grab adjudication must pay the notified sum, but can start a fresh "true value" adjudication afterwards to establish what the work was genuinely worth and recover any overpayment.
• Courts have repeatedly enforced smash and grab decisions through summary judgment, treating strict compliance with notice deadlines as a matter of statutory principle, not a technicality to be excused.

For QSs, this makes notice administration as commercially important as valuation accuracy. A perfectly justified deduction is worthless if the pay less notice that should have carried it was served a day late, addressed to the wrong recipient, or missing the required basis of calculation.

The Payment Cycle in Practice

The statutory deadlines only make sense when mapped against the payment cycle as a whole. The due date starts the clock; the final date for payment ends it. Everything in between - the payment notice, any default payment notice, and the pay less notice - has to happen inside that window, calculated from whichever dates the contract specifies, or the Scheme's default periods if it doesn't.

In practice, most standard forms shorten or restructure these default periods. JCT contracts typically set a payment notice deadline of five days after the due date and a pay less notice deadline of five days before the final date for payment. NEC4 works through certifying the amount due and a separate notice to change that amount. Whatever form is used, the QS's job is to diary every deadline against the specific contract wording - not the Scheme defaults - because the defaults only apply where the contract is silent or fails to comply with the Act.

The Right to Suspend Performance for Non-Payment

Section 112 gives a payee a further remedy where a sum due under the contract is not paid in full by the final date for payment, and no effective pay less notice has been served: the right to suspend performance of its obligations under the contract until payment is made.

To exercise this right, the payee must give the payer at least seven days' written notice of its intention to suspend, stating the ground or grounds for suspension. If payment still isn't made, suspension can begin once that notice period expires. The suspension can extend to all or part of the works, and the payee is entitled to a reasonable extension of time and to recover the reasonable costs and expenses reasonably incurred as a result of the suspension.

Suspension is a serious step and rarely a first response - it stops the works, creates programme consequences for everyone, and can strain the relationship irreparably. But as a statutory right sitting alongside adjudication, it gives an unpaid party genuine commercial leverage that doesn't depend on first winning a dispute.

How Payment Notices Connect to Adjudication

Payment notices and adjudication are two halves of the same enforcement mechanism. The notice provisions establish what is owed and by when; adjudication is the fast-track route to enforce that entitlement, or to challenge it, within a statutory 28-day timetable.

A smash and grab adjudication enforces a notified sum where notices were missed. A true value adjudication, usually brought afterwards by the party that overpaid, reopens the valuation itself. Either way, the same statutory right to adjudicate "at any time" under section 108 of the Act underpins both routes - which is why any QS working with payment notices needs a working grasp of the adjudication process alongside it.

If you haven't already, it's worth reading our companion guide, Construction Adjudication Explained: Your Rights and the Process, which walks through how to start an adjudication, appoint an adjudicator, and get a decision enforced within 28 days.

Practical Tips for QSs Managing Payment Notices

• Build a payment notice diary for every live contract, calculated from the actual contract clause - not the Scheme defaults - and set reminders several days before each deadline, not on the day.
• Never rely on a certificate alone to double as a payment notice unless the contract expressly says it can - the two serve different statutory functions.
• Draft every pay less notice to state both the sum considered due and the basis of calculation in full; a notice that gives a number without the reasoning behind it risks being held invalid.
• If a payment notice deadline is missed, prepare a default payment notice immediately - don't wait for the payer to notice the omission.
• Keep a clear record of when and how each notice was served (method, time, recipient) - notice disputes are frequently decided on service technicalities as much as content.
• Treat suspension and adjudication as escalation tools, not first resorts, but know the deadlines for both well before you need them.

Frequently Asked Questions

What is a payment notice under the HGCRA?

A payment notice is the statutory notice required under section 110A of the Housing Grants, Construction and Regeneration Act 1996, stating the sum the payer (or specified person) considers due on a construction contract and the basis on which it was calculated. It must normally be given within five days of the payment due date unless the contract sets a different period.

What is a pay less notice and when must it be served?

A pay less notice, under section 111, is served when a payer intends to pay less than the sum stated in a payment notice or default payment notice. It must be served no later than the deadline set by the contract, or by default no later than seven days before the final date for payment, and must state the lower sum and the basis of its calculation.

What happens if a pay less notice is served late?

If a pay less notice is served late, or is invalid because it doesn't state a sum and its basis of calculation, the payer loses the right to pay less for that payment cycle. It must pay the full notified sum by the final date for payment, and can only recover any overpayment later through a separate true value adjudication.

What is a "smash and grab" adjudication?

A smash and grab adjudication is a claim to enforce payment of a notified sum where the payer has failed to serve a valid payment notice or pay less notice in time. The adjudicator decides only whether the notices were valid and timely, not the actual value of the work carried out.

Can a contract change the statutory payment notice deadlines?

Yes. Contracts can set their own periods for payment notices and pay less notices, and most standard forms (JCT, NEC4) do. The Scheme for Construction Contracts' default periods - five days for a payment notice, seven days before the final date for payment for a pay less notice - only apply where the contract is silent or fails to comply with the Act.

Can a payee suspend work for non-payment under the HGCRA?

Yes. Section 112 allows a payee to suspend performance where a sum due is not paid in full by the final date for payment and no valid pay less notice has been served, provided at least seven days' written notice of the intention to suspend is given first. The payee can recover reasonable costs incurred as a result.

Does the HGCRA apply to all construction contracts?

It applies to most construction contracts as defined in the Act, across England, Wales, Scotland and Northern Ireland, provided the contract's duration exceeds 45 days. Certain contracts, such as those with residential occupiers, are excluded.

Final Thoughts

The HGCRA payment notices regime rewards discipline over debate. The statute cares less about who is right on valuation and more about who complied with the notice deadlines - and it enforces that priority ruthlessly through smash-and-grab adjudication. For a QS or commercial manager, the practical takeaway is simple: treat every payment notice and pay less notice deadline as immovable, document compliance meticulously, and never assume a certificate, email, or verbal agreement satisfies a requirement the Act sets out in writing.

Get the notices right, and the underlying valuation dispute can be argued on its merits, on its own timetable, through adjudication or otherwise. Get them wrong, and the statute will decide the outcome for you.

Want the full picture? Want to go deeper on enforcing payment rights?

Read our companion guides: Construction Adjudication Explained: Your Rights and the Process, and Construction Valuation Guide: How QSs Assess Interim Payments, for the full picture of how payment and dispute resolution work together on UK construction contracts.