An approved purchase order can still sit unpaid for weeks while a customer says “procurement is reviewing it.” These delays drain your working capital, and the impact can be especially serious for a medium-sized company. Staff time, materials, and delivery costs have already left your business, making cash flow management harder.
Some approval holds are legitimate. A price mismatch, missing goods receipt, or disputed change order needs a clear decision. However, a vague internal process should never leave you without a named owner, a required action, or a realistic payment date.
You can protect the relationship while asking for enough detail to move the invoice forward. That includes a named owner and payment date when it moves through a public procurement process.
Key Takeaways
- An approved purchase order does not guarantee prompt payment. A legitimate approval hold should identify the blocked step, required evidence, named owner, and decision date.
- Ask specific questions about three-way matching, purchase orders, goods receipts, invoice mismatches, and the undisputed amount instead of accepting that procurement is still reviewing the invoice.
- Document every call and follow-up, including the customer’s confirmation, requested documents, next action, and expected payment date. Keep the contract, invoice, delivery evidence, and approval records together.
- Escalate in measured stages from the buyer to accounts payable, procurement, and finance contacts, while following the contract’s notice requirements and preserving the evidence needed for further recovery action.
- UK payment rights, reporting duties, interest rules, and proposed reforms can depend on the contract, business size, sector, and current law. Check the position before relying on a statutory deadline or remedy.
Tell a real approval requirement from a stall
A genuine approval process has a defined purpose. It may confirm that the goods arrived, check that a manager approved extra work, or verify that the supplier’s bank details are correct.
A stall sounds different. You hear that the invoice is “with procurement,” yet nobody can explain what procurement needs or when it will respond.
What a valid approval hold looks like
Ask the buyer to identify the exact issue in writing. For example, they may need a revised purchase order, a delivery note signed by the site manager, or a credit note against an earlier overcharge.
You should also receive the name of the person who can approve the correction. A clear request gives you something to act on, while a generic status update does not.
If the customer is a large UK business, publicly available payment information can provide useful context. The GOV.UK reporting guidance explains what qualifying companies and LLPs must disclose about payment practices under these reporting requirements.
Published data can indicate a customer’s late payment practices, but it isn’t proof of liability. Payment practices and performance reports can help a medium-sized company assess a customer’s supplier payment performance.
Buyers subject to a public procurement process may have additional procedures to follow. Published information is context only, and doesn’t replace the invoice, contract, or delivery evidence.
When an approval process has drifted
Warning signs include repeated promises to “chase internally,” a buyer who won’t copy in accounts payable, or a request for documents you have already supplied. Another warning sign is when the customer keeps using your goods or services but won’t release the undisputed invoice amount.
This doesn’t prove bad faith. Staff turnover, poorly configured systems, and budget controls can all create genuine confusion. Still, you should move the discussion from general reassurance to documented actions.
A valid hold has an owner, an evidence requirement, and a decision date. If any one is absent, you are dealing with a payment problem rather than a complete approval process.
Why procurement payment delays persist after delivery
Most late invoices do not begin with a single refusal to pay. Across purchase-to-pay processes, unowned handoffs between procurement, operational teams, receiving, and accounts payable create recurring approval bottlenecks.
When no team owns the handover, invoice processing automation can capture, validate, and route an invoice before it reaches an exception queue. Accounts payable automation may then show that it is waiting for a receipt or approval.
Purchase orders and three way matching
Three way matching compares the purchase order, goods receipt, and supplier invoice before payment. Invoice matching software compares those records, helping protect customers from invoice mismatches involving quantity, price, or delivery.
Manual matching slows when a warehouse has not booked the receipt or the purchase order has closed. It can also stall when the invoice uses a different unit price, requiring manual reconciliation. OCR for invoices can create quantity or unit-price errors, leaving the invoice in an exception queue with no alert to you.
Ask if the invoice failed a three way matching check, which document caused the invoice mismatches, and if accounts payable can pay the undisputed portion. Also ask if invoice matching software identified the issue, if the purchase order needs reopening, or if a buyer must approve a price variance.
Change orders, retention, and contract disputes
Construction payment delays often involve variation work completed before the customer raises a revised order. Commercial contract negotiations can explain why work begins before that revised order. Unresolved receiving or variation approvals can cause further construction payment delays.
Retention clauses can create another complication. The contract may hold back part of the price until practical completion or the end of a defects period. Record the retained amount, contract clause, release trigger, and due date with your ordinary application or invoice.
If the customer disputes the scope of work, ask it to identify the disputed line items rather than treating the whole balance as disputed.
That distinction matters. An unresolved variation may justify a review, but it should not automatically block payment for completed and accepted work. Separating the two can prevent construction payment delays when a disputed variation affects only part of the balance.
Ask for facts, then document every follow-up
Your first message should be polite, brief, and hard to misread. Refer to the invoice number, purchase order, due date, and amount. Ask the customer to confirm its accounts payable automation status. Then request a reply by a reasonable date, usually within two business days.
Avoid an open-ended request to “please advise.” Give the customer questions it can answer.
Questions that expose the real blocker
Include the following questions in your email or call recap:
- Has accounts payable received and logged invoice INV-1048, and did invoice processing automation route it for review? If OCR for invoices misread a field, which value was captured?
- Did three way matching fail, and which field or document does invoice matching software identify as the exception?
- Who owns the next approval, and when will they complete it?
- What document or correction do you need from us to complete three way matching?
- Can you identify the precise invoice mismatches, such as a quantity, price, or receipt difference, and confirm the undisputed amount and scheduled payment date?
If the buyer says procurement is waiting for a department head, ask for the department name and the approval deadline. You are requesting a payment update, not asking the customer to disclose confidential internal matters.
Keep a record that survives staff changes
After every call, send a short recap email. State what the customer confirmed, attach any document requested, and set out the next agreed date. This prevents approval bottlenecks from restarting when a new contact takes over.
A simple chase record can look like this:
| Date and time | Person or team | Confirmed fact | Next action |
|---|---|---|---|
| 4 August | Buyer | Goods receipt missing | Site manager to confirm delivery by 6 August |
| 6 August | Accounts payable | Invoice on hold for receipt | Buyer copied into payment query |
| 8 August | Procurement lead | Receipt uploaded | Payment run expected on 12 August |
Keep copies of the contract, purchase order, invoice, delivery evidence, acceptance emails, and all chasers in one file. Preserve the original invoice beside data captured through OCR for invoices, and retain the accounts payable automation workflow history so the record survives staff changes. Strong documentation turns a vague procurement explanation into a record you can escalate.
Escalate without damaging the commercial relationship
Escalation works best when each step has a clear purpose. Start with the people closest to the purchase, then move to those who can release payment or resolve an internal disagreement.
Set dates in each message. A request for a response “as soon as possible” can sit unanswered because it creates no decision point.
Use a measured escalation sequence
You can usually follow this order:
- Ask the buyer or contract manager to confirm delivery, acceptance, and the outstanding approval.
- Copy in accounts payable and ask whether the accounts payable automation workflow shows the hold code, owner, and next payment-run date.
- Escalate to the procurement lead, finance controller, or senior contract contact when the deadline passes without a clear answer.
- Send a formal overdue notice that follows your contract’s notice requirements and reflects the agreed payment terms. State the contractual due date, amount, and documents already supplied.
Keep your tone factual. This helps protect supplier relationships while making clear that the invoice is overdue and the approval issue remains unresolved. Ask the customer to pay any undisputed amount while it investigates the balance under review.
If normal escalation fails, B2B debt recovery can add structure without forcing you to abandon a commercial relationship. Construction payment delays may require a document-heavy review of variations, retention, and acceptance evidence. For UK debt recovery, preserve the evidence before handing the matter over. A debt recovery agency needs the contract, invoices, purchase orders, delivery proof, correspondence, and a reliable debtor contact.
Debt Recovery Hub can help you identify a specialist recovery agency based on the debt’s value, age, documents, location, and complexity. Your contract and the relevant jurisdiction determine available payment rights and remedies, so obtain legal advice before making legal claims or taking formal action.
Use UK payment rules without overclaiming
Contract terms remain the starting point for most commercial invoices. Those payment terms set the payment date, notice process, dispute route, interest provisions, retention clauses, and rules for variations.
However, statutory rules and reporting requirements may apply alongside the contract. You should check the current position before relying on a payment deadline, interest calculation, or proposed reform.
Reporting duties can reveal payment practices and performance
In the UK, qualifying large companies and LLPs must report their payment data twice during each financial year. For these reporting requirements, a business generally falls within the size test if it meets at least two of these thresholds: 250 employees, GBP36 million annual turnover, and a GBP18 million balance-sheet total. Group rules and exclusions can affect the result.
A medium-sized company shouldn’t assume the large-company reporting duty applies to it without checking the current size tests and group rules.
Published reports for the relevant financial year can show payment practices and performance, including average payment times, proportions paid late, standard payment terms, and dispute information. The supplier payment performance data won’t prove that your invoice is due, but it can help you judge whether a long delay is unusual or part of a wider pattern.
Failure to comply with the reporting requirements can carry criminal consequences and fines for companies and, in some cases, responsible directors. That statutory reporting duty is separate from your own invoice claim.
Interest, payment caps, and changing rules
The Late Payment of Commercial Debts (Interest) Act 1998 may give you a right to statutory interest and fixed compensation in qualifying business-to-business cases. The government’s late-payment consultation outlines the existing framework, including statutory interest rules.
The government has also published a Commercial Payments Bill overview that describes 60-day payment caps, mandatory interest, and stronger reporting measures. Check the current reporting requirements before relying on those measures. Also confirm whether the provisions have commenced and how they apply to your contract before citing them in correspondence.
Payment rights differ by jurisdiction and contract. Public-sector contracts shaped by a public procurement process, construction contracts, international sales, and negotiated terms can each change the position.
Reduce approval bottlenecks before invoices fall due
If you buy goods or services as well as supply them, your purchase-to-pay processes can stop invoices aging without explanation. The strongest controls identify exceptions early and keep suppliers from reaching debt recovery.
Used well, accounts payable automation routes invoices to the right person and records approval timestamps. Meanwhile, invoice processing automation can flag missing purchase orders, while OCR for invoices captures data for validation. These tools cannot fix an approval chain with unclear ownership.
Give every invoice a visible owner
Create an approval map that names the buyer, budget holder, goods-receipt contact, and accounts payable owner. A further use of accounts payable automation is assigning visible ownership to each stage. Set an internal response target for exceptions, such as two business days, then alert a manager when that target passes.
Your invoice matching software should show why three way matching failed, including invoice mismatches in quantity, price, or receipt records. Good accounts payable automation makes each exception visible to the right reviewer. A supplier should not need three calls to learn that a receiving team has not confirmed delivery.
Also, separate legitimate disputes from routine processing failures. A commercial dispute needs evidence and a decision. A missing internal click needs a prompt correction.
Treat supplier concerns as early warnings
Use accounts payable automation to flag expected approval or cash-flow issues early. Tell suppliers before an invoice becomes overdue. Early notice helps a medium-sized company manage payroll or stock. It gives both sides time to resolve missing paperwork or agree a revised payment plan while facts are fresh.
The Small Business Commissioner’s 2025 payment-time update reported that 15% of invoices from large businesses were paid late, down from 25% in 2018. Better supplier payment performance in aggregate does not help a supplier facing one unpaid invoice that funds payroll or stock.
Pay agreed amounts promptly and isolate genuine disputes. Used responsibly, supply chain finance may support working capital, but it should not replace paying valid invoices on time. Reverse factoring is one possible structure within it.
Frequently Asked Questions
What should I ask when a customer says procurement is reviewing the invoice?
Ask the customer to identify the exact blocker, the document or correction required, the person responsible for the next approval, and the expected payment date. Also request confirmation that accounts payable has logged the invoice and whether the undisputed amount can be paid.
How can three-way matching cause a procurement payment delay?
Three-way matching compares the purchase order, goods receipt, and invoice, so a missing receipt or difference in quantity, price, or delivery can place the invoice on hold. Ask which document or field caused the exception and what action will release the invoice.
What if the customer disputes only part of the invoice?
Ask the customer to identify the specific disputed line items rather than treating the entire balance as disputed. The undisputed amount should generally be considered separately, subject to the contract and applicable payment terms.
When should I escalate an unpaid procurement invoice?
Escalate when the agreed response date passes without a named owner, required action, or realistic payment date. Copy in accounts payable, then the procurement lead or finance contact, and send a formal overdue notice that follows the contract’s notice requirements if the delay continues.
Final thought
Procurement payment delays become manageable when you stop accepting a vague status as an answer. Ask for the blocked step, the evidence needed, the named owner, and the decision date.
A named owner and decision date make approval bottlenecks manageable. Clear records support a firm escalation while leaving room for a customer to correct a genuine process failure. A documented approval path gives you a better route to payment than repeated informal chasers.
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