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Alert: Marketplace “buyer” overpayment scams

4 min readReviewed October 2026 · Internet Safety Australia Editorial Team

In short

  1. A “buyer” who overpays and asks you to refund the difference is always a scam.
  2. Screenshots and emails of “payments” can be faked — only your own banking app is proof.
  3. PayID doesn’t require the seller to “upgrade” anything. That email is fake.

If you sell on Facebook Marketplace, Gumtree or similar, you’ll meet this scam within your first few listings. The “buyer” is keen, pays fast — too fast — and something about the payment goes sideways. Every variation below ends the same way: you send real money or real goods against a fake payment.

The current variations

  • Overpayment: “I’ve sent $500 instead of $50 by mistake — please refund $450.” The original payment was fake; your refund is real.
  • Fake PayID email: an email styled like PayID/your bank claims the buyer paid, but you must “upgrade to a business account” by paying a refundable fee. PayID has no such thing.
  • Fake payment screenshot: a screenshot of a “pending transfer”. Pending in their photo editor.
  • Courier pickup: “My agent will collect; I’ve added their fee to your payment — please pay the courier.” Same con, extra character.
  • The deposit hold: for rentals and big items, a fake receipt for a deposit you’re asked to partially “release”.

The only proof of payment

Cleared funds showing in your own banking app. Not screenshots, not emails, not SMS “confirmations”, not “pending”. If it’s not in your account as available balance, you have not been paid.

Sell safely

  • Never refund “overpayments” — tell the buyer to cancel their payment instead
  • Never pay a fee to receive money (PayID, PayPal and bank transfers don’t work that way for sellers)
  • Meet locally where you can; cash or instant transfer you watch arrive in your own app
  • Be suspicious of buyers who won’t inspect the item or negotiate at all
  • Report scam buyers to the platform and to Scamwatch

Common questions

Where to report this

Report to Scamwatch

All types of scams — phishing, investment, romance, shopping, impersonation. Reports help track and disrupt scam activity.

Go to Scamwatch (leaves our site — official service)

Official sources for this guide

Reviewed October 2026 by Internet Safety Australia Editorial Team. Internet Safety Australia is independent and not a government website.