Medium riskBank & Payment Scams

Accidental Transfer Scam

In this scam, money arrives in your account 'by mistake' and the sender urgently asks you to return it; the original funds were stolen or are later reversed, so any money you send back comes from your own balance.

Quick verdict

Risk level
Medium risk
Scam type
Money mule / reversed-payment trick
Main red flag
Unexpected money arrives and a stranger urgently asks you to send it back.
What to do first
Do not send it back yourself. Report it to your bank and let them handle the return.

What this scam usually looks like

In this scam, money arrives in your account 'by mistake' and the sender urgently asks you to return it; the original funds were stolen or are later reversed, so any money you send back comes from your own balance.

Example message pattern

Example pattern — not a real report
Example pattern: 'Sorry, I sent money to your account by mistake! Please transfer it back to this account quickly, I really need it.' The original transfer is later reversed as fraud.

This is a fictional, anonymised example used to illustrate the pattern. It is not a verified real message, and any names are used only to show how the scam typically reads.

Red flags to watch for

  • Unexpected money in your account from someone you do not know
  • Urgent pressure to send it back immediately
  • A request to return it to a different account than it came from
  • Refusal to let your bank handle the correction
  • An emotional or rushed story to push you

What to do

  • Do not move or send the money yourself
  • Contact your bank, report the unexpected funds, and let them reverse it properly
  • Keep records of the transfer and messages
  • Be cautious of anyone pressuring you to act fast

If you already clicked or replied

  • If you already sent money back, contact your bank immediately
  • Expect the original deposit to be reversed, leaving you short
  • Keep all evidence for your bank and authorities
  • Report the sender's details and the request

What not to do

  • Do not send 'mistaken' money back on your own
  • Do not return funds to a different account
  • Do not let urgency override checking with your bank

Similar scams

High risk Bank & Payment

Overpayment Scam

A buyer, employer, or 'client' sends you a payment or cheque for more than they owe, then asks you to send the extra back. The original payment is fake or is later reversed, leaving you out of pocket for the refund you sent.
High risk Job

Money Mule Job Scam

This scam hires you as a 'payment processor', 'financial agent', or 'transfer assistant' to receive money into your account and forward it on, making you a money mule who launders the proceeds of fraud.
High risk Bank & Payment

Fake E-Transfer Scam

This scam sends a fake e-transfer notification linking to a phishing page that imitates your bank's login to steal your online banking details.

Frequently asked questions

Why can't I just send the money back?
The original funds may be stolen or will be reversed by the bank. If you send money back yourself, the reversal leaves you out of pocket from your own balance.
How should I handle unexpected money?
Do not spend or transfer it. Report it to your bank and let them reverse the payment through the proper process.
Could this make me a money mule?
Yes. Returning funds from fraud, even unknowingly, can implicate your account. Letting your bank handle it protects you.
I already returned the money. What now?
Contact your bank immediately, keep all evidence, and report it. Expect the original deposit to be reversed.

Last reviewed: June 2026

Disclaimer: This page provides educational information only to help you recognise common scam patterns. It is not legal, financial, cybersecurity, or law enforcement advice, and it does not confirm whether any specific message, company, or person is genuine or fraudulent. When in doubt, contact the official organisation directly and report concerns to your local authorities.