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  3. A Customer Has Not Paid My Invoice

Legal4U problem guide

A Customer Has Not Paid My Invoice

A practical evidence and enquiry-preparation guide for businesses dealing with an unpaid or disputed customer invoice.

England and WalesGeneral informationProfessional review pending

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Short answer

Start by confirming the correct debtor, the agreed payment terms and whether the customer disputes the debt. Keep the contract, invoice, delivery evidence and correspondence together before a legal professional assesses recovery options, procedure and cost.

Quick checklist

Start with these

Confirm the customer legal name and address
Record the agreed price and due date
Separate non-payment from any dispute or counterclaim
Put the contract, invoice and delivery evidence in date order
List demands, replies and settlement proposals
Define the legal work you want priced

Best order

How to organise the first pack

  1. Write a one-page chronology from order to the latest response.
  2. Add the agreement, terms, purchase order and any variations.
  3. Add the invoice, statement and evidence that goods or services were supplied.
  4. Add complaints, chasers, formal demands and settlement proposals in date order.
  5. Finish with the amount sought, the outcome wanted and any urgent date.

Identify The Correct Customer And Payment Terms

Check the legal name of the person, sole trader, partnership or company that ordered the work. Record the agreed price, payment date and any term about interest, disputes or late payment.

  • customer legal name and address
  • quote, order or signed agreement
  • invoice date and payment terms
  • company or trading-name details

Separate An Unpaid Debt From A Disputed Debt

State whether the customer accepts the invoice but has not paid, or disputes the work, goods, amount or timing. Include any counterclaim, credit note or proposed payment plan because these facts can change the work a professional needs to scope.

  • reason given for non-payment
  • complaints about quality or delay
  • part-payments or admissions
  • set-off or counterclaim raised

Build A Short Evidence Pack

Put the key documents in date order and add a one-page chronology. A focused pack helps a professional see what was agreed, what was supplied, when payment fell due and what happened next.

  • contract, terms or purchase order
  • invoice and account statement
  • delivery, completion or acceptance evidence
  • chasing and complaint correspondence

Record Pre-Action Steps Without Assuming The Route

Keep copies of demands, responses and settlement proposals. The appropriate pre-action steps and any court route depend on the parties and facts, so a professional should confirm what is required before proceedings are started.

  • formal demand or letter before claim
  • delivery or receipt evidence
  • customer response
  • settlement or instalment proposals

Define The Legal Help And Cost Question

Explain whether you need an initial merits review, a letter, negotiation, claim preparation or representation. Ask what is included, excluded and likely to require additional work before agreeing a fee.

  • amount claimed and any disputed amount
  • work required now
  • known deadline or hearing date
  • documents available for review

By matter type

Useful papers for common enquiries

Accepted but unpaid

Include any admission, promised payment date, part-payment and proposed instalment plan.

Quality or delivery dispute

Include the complaint, response, specification, completion evidence and any remedial work offered.

Wrong debtor or trading name

Include the order details, invoice addressee, company information and evidence showing who contracted.

Claim already started

Include the claim form, response pack, orders, hearing notice and every current deadline.

Avoid delays

What not to send first

  • A large unsorted email export without a short chronology.
  • Original documents where a clear copy is sufficient for initial triage.
  • Statements that the debt is undisputed when correspondence shows a complaint or counterclaim.
  • Starting or responding to proceedings on the assumption that an online enquiry pauses a deadline.

General information only for England and Wales. Scotland and Northern Ireland need separate content checks.

Content governance

Editorial and source information

Author
Legal4U Editorial Team
Professional review status
Pending. Commercial litigation solicitor, barrister or regulated business-law specialist review required before publication as legal guidance.
Jurisdiction
England and Wales
Date published
18 July 2026
Regulatory status
Legal4U is a legal enquiry intake and professional matching platform, not a law firm.
Sources
  • Make a court claim for money GOV.UK. Checked 8 September 2026.
  • Practice direction on pre-action conduct and protocols Ministry of Justice. Checked 8 September 2026.
Editorial policy
Legal4U guides are written to help users prepare structured enquiries. The professional-review status and reviewer details are shown separately on each guide.
Correction process
Corrections or update requests can be sent through the Legal4U contact page for editorial review.
Information and advice
This page is general information only and is not legal advice. Legal advice is provided only by an authorised professional or firm after they accept instructions.

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If your matter is urgent, include hearing dates, court deadlines, orders and any documents you already have when you submit your enquiry.

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On this page

Identify The Correct Customer And Payment Terms Separate An Unpaid Debt From A Disputed Debt Build A Short Evidence Pack Record Pre-Action Steps Without Assuming The Route Define The Legal Help And Cost Question

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  • Legal advice starts only after a professional accepts instructions.
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