Field guide · No. 08 · Marketplace · Email · Job offers

Overpayment and fake-cheque scams

The tell: Someone pays you too much by cheque or transfer and asks you to send the difference back.

Thanks, I'll take it. I'm out of the country so my assistant will send a cheque. She accidentally made it out for $2,400 instead of $1,800. Please deposit it and send the $600 difference back to my shipping agent by Zelle today.

Check this example

How it works

  1. A buyer, employer or “client” sends you a cheque, money order or transfer for more than the agreed amount.
  2. They ask you to send the extra back, or to forward it to someone else for shipping, equipment or a fee.
  3. Your bank shows the money in your account within a day or two, so it looks real.
  4. Days or weeks later the cheque is found to be fake and the bank reverses it. The money you sent onward was real, and it’s your debt.

The tells

  • The amount is more than you asked for, and the sender wants the difference back quickly.
  • A third party is involved: an “agent”, “assistant” or “vendor”.
  • Pressure to deposit and send money the same day.
  • Payment back by wire, Zelle, crypto or gift cards.

What to do

  • Don’t send anything back until your bank confirms the cheque has fully cleared. Funds being “available” is not the same thing.
  • Ask for the exact agreed amount, by a method you can verify.
  • If you’ve already sent money onward, tell your bank straight away and report it to your national fraud agency.
  • If you were told to buy equipment with a cheque, see Fake recruiters.

Where to report it

Anywhere in the world
  • Your bank or card provider. First, if money or card details are involved. Use the number on your card.
  • The platform where it happened. Use its “Report” button: the marketplace, the messaging app, the social network.
  • Your local police. If you’ve lost money, and for a reference number your bank may ask for.
  • Your national fraud or consumer-protection agency. Search for it by country; use a government address (.gov or the equivalent).
United States

Links last checked 2026-10-12.

United Kingdom
  • Forward suspicious emails to report@phishing.gov.uk — Handled by the National Cyber Security Centre.
  • Forward suspicious texts to 7726 — Free. Your mobile provider receives the report.
  • Report Fraud (England and Wales) — If you’ve lost money or been hacked. Phone 0300 123 2040.

Links last checked 2026-10-12.

Canada

Links last checked 2026-10-12.

Australia
  • Scamwatch — Run by the national consumer regulator.

Links last checked 2026-10-12.