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How to Claim Refund of Overpayments

Guide to recovering money paid by mistake, duplicate payments, or overpayments where refunds have been refused.

7 min read
Updated 2 February 2026

Step-by-Step Guide

1

Document the overpayment

10 mins

Gather bank statements showing both payments, or evidence of the correct amount versus what you paid.

Tip: Highlight the duplicate or excess payments clearly on statements.

2

Request refund promptly

10 mins

Contact the recipient in writing, explain the error, and request a refund with specific reference numbers.

3

Escalate if refused

15 mins

If they refuse or ignore you, send a formal letter before claim. For bank errors, use the bank complaint process first.

4

File your claim

15 mins

File via Money Claim Online for the overpaid amount. Claim is based on unjust enrichment.

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Recovering Overpayments

If you pay someone more than you owe, or pay by mistake, they must return the excess. Keeping money they know is not theirs is called "unjust enrichment".

Common scenarios: - Overpaid or paid twice - refund denied - Bank error not corrected - Wrong account payment disputes - Accidental subscription charges

Legal principle: Anyone who receives money they are not entitled to must return it. This applies regardless of why the overpayment happened.

Evidence You Need

Essential evidence: - Bank statements showing the payment(s) - Payment confirmations or references - Evidence of correct amount (invoice, contract) - Correspondence requesting refund

Helpful evidence: - Transaction references for tracking - Account details showing where money went - Any acknowledgment from recipient - Your bank's investigation results

Tips: - Report errors to your bank immediately - Get transaction references for all payments - Keep all communications about the refund request

What You Can Claim

Typical claim value: £10 - £10,000

You can claim: - The overpaid or duplicate amount - Interest from date you requested refund - Bank charges caused by the error (if applicable)

Bank recovery: If money went to the wrong account, your bank may be able to recover it directly through the "misdirected payments" process. This is faster than court.

Types of Overpayment

Duplicate payments: You paid the same invoice twice. Evidence: two transactions for identical amounts around the same date.

Wrong amount: You paid more than the invoice/contract amount. Evidence: compare invoice to payment.

Wrong recipient: Money went to wrong account. Your bank can help trace and recover this. You may need to claim against the person who received it.

Refund not processed: You returned goods but refund never came. Evidence: return proof plus bank statement showing no refund.

Frequently Asked Questions

They still owe you. Having spent money you were not entitled to is not a defence. However, enforcement may be harder if they have no funds. The debt remains until paid.

Legal Disclaimer

This guide provides general information about UK small claims court procedures and is for educational purposes only. It does not constitute legal advice. CourtPilot is not a law firm and is not regulated by the Solicitors Regulation Authority. The law may have changed since this guide was last updated. For advice specific to your situation, please consult a qualified solicitor or seek help from Citizens Advice.

Related Guides

Industry-Specific Guidance

We have detailed guides tailored for specific industries facing these types of disputes.

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NOT A LAW FIRM | NOT REGULATED BY THE SRA | NOT PROVIDING LEGAL SERVICES

CourtPilot provides AI-powered information tools to help you understand UK small claims procedures. We are NOT qualified solicitors, NOT regulated by the Solicitors Regulation Authority, and do NOT provide legal advice or reserved legal services. All information is for educational and planning purposes only. You are responsible for your own legal decisions.

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