Construction Payment Notice Template: Draft With AI, Check the Deadlines

Yes, AI can draft the wording of a payment notice from facts you supply, but it must not set the dates. A quantity surveyor should read the contract's payment clause, list the due date, final date for payment and notice deadlines, count them in a spreadsheet, and have a construction solicitor check the template once.

The caution is earned. Under the Construction Act, the statute the examples below follow, a payer who misses the pay less deadline can owe the sum in its own payment notice in full, and a payer who misses the payment notice deadline gives the payee the chance to name the figure with a default notice. The statute's payment sections and its default scheme were checked against the official text on 1 November 2026. This is practical guidance, not legal advice, and the contract in front of you can change every number below. If your contracts sit under a different payment law, or none, the method still holds: quote the clause, count the dates in a sheet and have a solicitor confirm the rules once.

Follow me on Instagram@sagnikteaches

The four dates every payment notice hangs on

Four dates sit behind a payment cycle, and mixing them up is the commonest way to get a notice wrong.

Connect on LinkedInSagnik Bhattacharya

• Payment due date: the date the contract says a payment falls due, usually tied to an application or valuation date.
• Payment notice deadline: the Act requires the contract to provide for a notice, from the payer (or a person the contract names, such as the contract administrator) or from the payee, no later than five days after the due date. It must state the sum considered due and the basis on which it was calculated.
• Pay less notice deadline: the last day to say you intend to pay less than the notified sum. It must fall no later than the agreed "prescribed period" before the final date for payment.
• Final date for payment: the date by which the notified sum, or the lower sum in a valid pay less notice, must be paid. The parties are free to agree how long it runs after the due date.

The contract comes first. Where a contract has no compliant payment terms of its own, a default scheme fills the gap, and that scheme is a useful yardstick for the shape of the cycle. Here it is with an illustrative due date of Wednesday 12 May:

Subscribe on YouTube@sagnikteaches

Most written contracts set their own numbers, such as a due date seven days after the valuation date and a final date fourteen days later, so treat the table as a reference for gaps rather than your diary. Read the payment clause and any schedule of amendments, because contract particulars often override the printed clause.

The statute also has a counting rule. A period that runs "after" a date begins the day after it, and Christmas Day, Good Friday and bank holidays are excluded when the period would include them. Weekends count. A contract can define "day" differently, for instance as a working day, so until a solicitor tells you which rule governs, diary the earlier date.

Read the payment clause with AI, quoting first

Extracting the clause is a task AI does well, provided it must quote the words it relied on. Paste the payment clause, the definitions clause, the notices clause and any amendments schedule, and ask for a table. Never ask an assistant what the statute or the contract says from memory: paste the text.

Extract the payment timetable from the contract text below into a table with columns:
Event | Trigger | Number of days | Calendar or working days | Clause | Exact quote

Events to find: payment due date, payer's payment notice, pay less notice, final date for payment, any payee application or notice.
Rules:
- Copy the quote word for word. Do not paraphrase.
- If an amendments schedule or contract particulars change a number, list both numbers and flag it.
- Use the definitions clause to decide whether "day" means calendar or working days. Quote that clause too.
- Do NOT calculate any dates.
- Then list the notices clause details: who serves whom, at what address or email, by what method, and when service is treated as received.

TEXT:
[paste]

Illustrative output for an imaginary contract:

Two faults turn up often in output like this, and you should look for both. The assistant reads "days" as working days when the definitions clause says calendar days, or it quotes the printed clause and misses the amendments schedule that changed the number. Check every row against the page itself, with a highlighter. If your firm is shopping for a tool to do this at scale, what builders should test in contract review software lists the checks to run.

Count the dates in a spreadsheet, not in the chat

Language models are unreliable at date arithmetic, especially across holidays, and a notice deadline is the worst place to find out. Ask the assistant for the formula, never for the answer. This illustrative contract applies the clause table above: interim application on Thursday 18 March 2027, due date seven calendar days later, payer's notice five days after the due date, final date fourteen days after the due date, pay less notice five days before the final date. Easter falls inside the period, so the two counting rules diverge:

The same notice has a deadline two days apart depending on the rule, which is exactly why the earlier date goes in the diary. A payer's QS would serve by Tuesday 30 March. A payee's QS watching for a late notice would not assume the later date has arrived until a solicitor confirms. The spreadsheet formula that implements the second count is short. In WORKDAY.INTL, the weekend argument is a seven-character string that starts on Monday, where 1 marks a non-working day and 0 a working day. The string 0000000 makes every day count, so only the holidays you list are skipped. For a contract that counts working days, use 0000011 instead.

Holidays on sheet "Holidays", A2:A30 (Christmas Day, Good Friday, bank holidays)
Due date:                 =B2+7
Payment notice by:        =WORKDAY.INTL(C2, 5, "0000000", Holidays!$A$2:$A$30)
Final date for payment:   =WORKDAY.INTL(C2, 14, "0000000", Holidays!$A$2:$A$30)
Plain calendar check:     =C2+5   and   =C2+14
Pay less notice (calendar): =E2-5

Ask the assistant to write and explain the formulas, then confirm three dates by hand with a printed calendar before the sheet goes live. Colour any row amber seven days out and red three days out, and put the deadline in the team calendar, not only in the sheet.

Then test the sheet on history. Take the last three payment cycles on a live job, enter their application dates and compare the sheet's deadlines with the dates notices were actually served. An illustrative check on a fit-out: applications 4, 5 and 6 give sheet deadlines of 12 January, 9 February and 9 March for the payer's notice, and the job file shows notices served on 11 January, 9 February and 10 March. The third was a day late on the sheet's reading. Either the sheet is wrong (a missing holiday, the wrong trigger date) or the notice was, and both are worth knowing before the next cycle rather than in the middle of a dispute.

What each notice must say, with figures filled in

Under the Act, a payer's payment notice must specify the sum the payer considers due at the due date and the basis on which that sum is calculated. A pay less notice must specify the sum the payer considers due on the date the notice is served and its basis. Either sum may be zero. A payee's own notice states the sum the payee considers due and the basis. Beyond that statutory core, a useful notice also names the contract, the application it answers, the key dates and the person authorised to sign.

PAYMENT NOTICE
Contract: [contract title and reference]
From: [payer's company] (or [contract administrator] for the payer)
To: [payee's company], by [method and address under the notices clause]
Date of notice: [date]
Application no. [n] dated [date]. Payment due date: [date]. Final date for payment: [date].

This is a payment notice under clause [x] of the contract.

Sum considered due at the payment due date: $[amount]
Basis of calculation:
  Gross valuation to date            $[ ]
  Less retention at [ ]%             $[ ]
  Net valuation                      $[ ]
  Less previous payments             $[ ]
  Sum considered due                 $[ ]
Valuation reference and attachments: [list]

Signed: [name, role, authority]

PAY LESS NOTICE
Contract: [contract title and reference]
Refers to the payment notice dated [date] for application no. [n].
Date of notice: [date]. Final date for payment: [date].
Given not later than [prescribed period] before the final date for payment, as clause [y] requires.

Sum considered due on the date of this notice: $[amount]
Basis of calculation:
  Sum in the payment notice          $[ ]
  Less [item, with reference]        $[ ]
  Sum considered due                 $[ ]

Signed: [name, role, authority]

Illustrative figures for interim payment 7 on a mid-sized fit-out. Gross valuation $186,400; retention at 5% is $9,320, leaving a net valuation of $177,080; previous payments total $141,200; the sum considered due is $35,880. If the payer then finds a defective screed, a pay less notice can deduct the remedial cost, say $4,650 against a quote reference, giving a sum considered due of $31,230. Both calculations must be reproducible from the attachments. A reader should be able to follow each line without phoning anyone, because a notice with a figure and no visible basis is exactly the one that gets challenged.

Drafting with AI: facts in, wording out

Give the assistant a fact sheet and a fixed layout, and forbid it from adding anything else. The dates come from your spreadsheet, not from the assistant.

Draft a payment notice using ONLY the fact sheet below and the layout I give you.
- Do not add reasons, conditions, clause numbers or dates that are not in the fact sheet.
- If a field is missing, write [MISSING].
- After the notice, list every figure you used and recompute each subtotal so I can check it.

FACT SHEET
Contract: [title, reference]   Payer: [company]   Payee: [company]
Application no.: 7   Application date: [date]
Payment due date: [from the sheet]   Final date for payment: [from the sheet]
Gross valuation: 186400   Retention rate: 5%   Previous payments: 141200
Service: email to [address in notices clause]
Signatory: [name, role]

LAYOUT: [paste the template above]

Expect to fix three things. The assistant may add a hedge you never gave it ("subject to review of defects"), compute retention on the net figure instead of the gross, or write "we" where the layout needs the payer's company name. Delete the hedge, because a notice that qualifies its own sum invites argument; ask your solicitor how far such wording is safe. Rebuild the arithmetic on a calculator rather than trusting the recomputation table. A before and after shows the standard to aim for:

For the payee side, the tutorial on checking a payment application before you send it covers the document that comes first, and pay applications and schedules of values covers the layout underneath it. Retention appears as a line in the basis of calculation, and tracking retainage covers keeping that figure straight across a job.

Payer's QS and payee's QS: who diaries what

The same cycle looks different from each side, and both sides should work from the same date table, because each side's deadline is the other's cue to act.

If you are the payer's quantity surveyor:

• On receipt of an application, enter its date in the sheet and read off the due date, the payment notice deadline and the final date for payment. Check them against the contract summary.
• Start the valuation straight away and ask the site for evidence on any contested item, because evidence takes longer to arrive than the sum takes to calculate.
• Draft the notice from the fact sheet two days before its deadline, run the second-reader check, and serve it with room to spare.
• If you intend to pay less, decide before the pay less deadline, give the basis line by line, and book the payment run for before the final date.

If you are the payee's quantity surveyor:

• Send the application early enough that the due date lands where you expect, and keep proof of when it was received.
• Diary the payer's notice deadline. If it passes with nothing served, tell your solicitor and ask whether your application already counts as your notice or whether a default notice of your own is the right step.
• When a notice arrives, compare its sum and basis with your application line by line, and list every disagreement the same day.
• Diary the pay less deadline and the final date for payment, so you know when the figure is fixed.
• If a notified sum is not paid by the final date, the right to suspend needs a formal seven-day notice first, so take advice before anything is switched off.

A record of service you can show later

A notice only counts if you can prove it reached the right place in time. The Act lets the parties agree how notices are served, and where they have not, any effective means will do, with pre-paid post to the addressee's last known principal business address, or to a company's registered or principal office, treated as effective service. Your contract's notices clause governs, so find it first.

Keep a service log with one row per notice. Illustrative entry:

Serve at least a clear working day early, so a bounced email or a closed office is a nuisance rather than a missed deadline. Save the sent message as a PDF with its time stamp and attachments. If the contract demands post or hand delivery, do that as well, and photograph a hand delivery with the date visible. AI can fill in the log entry and draft a two-line covering email from your fields, but it must never add recipients or change the address. An illustrative covering email:

Subject: Payment notice, application 7, [project]

Hello [first name],

Please find attached the payment notice for application 7, served under clause 12.2 of the contract. A copy is following by post to the address in the contract particulars.

Please confirm receipt by reply.

[your name]

A second-reader prompt to run before anything is served

Once the notice, the date table and the service log exist, a second pass catches the slips a tired person misses. Paste all three and ask for a pass or fail on each line:

Check this notice against the date table and the notices clause. Return pass or fail with a one-line reason for each:
1. The notice type matches the clause (payment notice or pay less notice).
2. The sum is stated as a figure, and the basis is shown line by line.
3. Every line of arithmetic is correct (recompute them).
4. The date of the notice is earlier than the deadline in the date table.
5. It is addressed to the person and address in the notices clause.
6. Every attachment it mentions is listed.
7. No wording qualifies or hedges the sum.
8. A named person with authority signs it.
Do not give legal advice. Flag anything you are unsure of.

Illustrative result: items 1, 2, 4, 6 and 8 pass; item 3 fails because retention was computed on the net valuation; item 5 is unsure because the clause names a contract administrator and the notice is addressed to a director. Two real catches in one pass, both fixed in minutes before service.

A realistic slip, again as an illustration: the fact sheet carried the valuation date in the due date field, so the draft showed a due date seven days earlier than the contract allows. The notice read well, and a tired reviewer would have signed it. The date table exposed it, because the due date came before the application date, which cannot happen. Build that logic into the sheet as a cell that turns red whenever the due date is not later than the application date.

When a notice is late, wrong or missing

The Act has remedies for both sides. If the payer's payment notice is not given in time, the payee may give its own notice at any time afterwards, and the final date for payment of the sum in that notice is postponed by the number of days between the payer's deadline and the day the payee gives its notice. There is an important exception: where the contract lets the payee state the sum and its basis before the payer's deadline, as many interim applications do, that application already counts as the payee's notice, so there is no postponement and no second notice to serve. Where the payer does not pay a notified sum by the final date, the payee can suspend performance after giving at least seven days' notice that states the grounds, and the right ends once payment is made in full. Those are statutory points for your solicitor to apply to your contract, not a script to follow alone.

If you are the party that missed a deadline, take these steps in the first hour:

1. Stop. Do not back-date or reissue a notice under the old date.
2. Write down what happened and when, with times, while memories are fresh.
3. Tell your commercial lead and a solicitor the same day.
4. Gather the emails, the service log and the date table, and ask an assistant to build a dated chronology from them for the solicitor: facts only, no opinions.

On the payee side, chasing the cash after a valid notice is a different job, covered in chasing late payments with AI reminders.

Keeping the contract and its figures private

A contract, a valuation and a payment notice contain commercial terms, rates and names. None of the prompts above needs the whole contract: the clause extraction needs four or five clauses, and the drafting prompt needs a fact sheet with placeholders such as [payer] and [payee]. Put the real names and addresses in at the end, in your own document rather than in the chat. Check the plan as well. On personal ChatGPT and Claude plans, chats may be used for model training until you switch that off in privacy settings, whereas the business plans leave business content out of training by default. If the contract or a client's terms restrict sharing documents with third parties, read that clause before pasting anything, and ask your solicitor if it is unclear.

Payment notice questions a quantity surveyor gets asked

Is a payment notice the same as an invoice or application?

No. An application or invoice asks for payment, while a payment notice states the sum the payer considers due and how it was calculated. Whether an application or invoice can double as a notice depends on the contract's wording, so check the clause before relying on one document to do both jobs.

Do weekends count when I work out the five days?

Under the statute's own counting rule the period starts the day after the trigger date, weekends count, and Christmas Day, Good Friday and bank holidays are skipped. Your contract may define a day differently, for example as a working day. Until your solicitor confirms which rule applies to your contract, diary the earlier date.

Can AI tell me whether the Construction Act applies to my contract?

No. AI can read your payment clause and summarise it, but whether a statutory regime applies depends on the type of contract, the type of work and who the parties are, and some contracts are excluded. That is a question for a construction solicitor, who can usually answer it quickly from the contract itself.

What if I serve a notice a day late?

Do not back-date it or quietly rewrite it. If the payer's payment notice is late, the payee may be able to serve its own notice and its figure can become the sum due. A late pay less notice can leave the notified sum payable in full. Tell your commercial lead and a solicitor the same day.

Further reads

• Construction Final Account: Variations, Deductions and Sign-Off With AI — Variations, deductions and sign-off at the end of a job
• Can ChatGPT Draft a Subcontractor Agreement? Clauses to Check — Subcontract clauses to check before payment disputes start
• Construction Cash Flow Forecast: Build One in a Spreadsheet With AI — Forecast cash around the final dates for payment
• Chasing Unpaid Invoices With AI: Polite Reminders for Trades — Polite reminders for unpaid invoices in the trades
• AI Automation for Construction Companies: Daily Logs to Invoices — Six paperwork steps from dictated daily log to progress invoice, one tool each, with a ten-person firm's costs, sums and who signs what.
• AI Tools for Contracting Businesses: Subcontracts and Change Orders — A small contractor's routine for AI on subcontracts and change orders: a clause comparison, a date tracker, a priced draft and what a lawyer still reviews.
• Builder Invoice Template: Stage Payment Requests Written With AI — How to turn a contract's payment schedule into stage payment requests and a four-step polite reminder sequence with AI, keeping the figures and tax lines yours.
• Fence Contract Template: Draft With AI, Add Permit and Boundary Clauses — Drafting prompts for the permit, boundary, utility, weather and payment clauses of a fence contract, with the mistakes to fix and a lawyer-ready pack.
• How to Use AI in a Construction Company: Estimator, PM and Office — What estimators, project managers and office staff should each hand to AI, who reviews the output, and where figures and contract wording go wrong.
• Paving Contract Template: Payment, Base and Weather Clauses With AI — Payment-stage, base-condition, weather and warranty clauses for a paving job, plus prompts that give a lawyer a usable first draft.
• AI in Construction Projects: Weekly Early-Warning Flags for Cost and Delay — Paste weekly progress notes, thresholds and last week's flags into an AI assistant, then check each flag before it reaches the risk register.
• Can AI Check an Interim Valuation? A Quantity Surveyor's Test — A quantity surveyor's clause-by-clause test of AI on a contractor's interim application: what it catches, what it misses, and who values.
• Party Wall Notice Template: AI Draft Checked Against the 1996 Act — AI can draft a party wall notice in minutes. Here is the clause-by-clause check a surveyor runs before anything is served.
• How Can AI Help Quantity Surveyors? BoQ Checks, Takeoffs and Cost Reports — Where AI saves a quantity surveyor time on BoQ checks, takeoffs and cost reports, and the checks that must stay manual.
• AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.

Sources: the payment sections of the Construction Act (sections 110 to 116) and the payment provisions of its default scheme, read on the national legislation site on 1 November 2026; Microsoft Support documentation for WORKDAY.INTL; OpenAI business data page; Anthropic privacy centre.