Fake Unpaid Invoice Scams on WhatsApp
Scammers send invoices and overdue-payment demands over WhatsApp for goods never ordered, using informal pressure to extract payment from businesses.
Part of: Fake Unpaid Invoice Scams
Last reviewed: 1 June 2026
Fake unpaid invoice scams have moved onto WhatsApp, where a message and an attached invoice can chase payment for goods or services a business never ordered. The informal channel makes the demand feel like routine supplier contact while removing the formal cues that would normally prompt verification.
Because some businesses do receive invoices and reminders via messaging, the channel itself raises little alarm. The scammer uses the immediacy of chat to apply pressure, encouraging a quick payment before staff check whether the order was ever placed.
How this scam works on WhatsApp
The target receives a WhatsApp message with an attached invoice or a payment reminder for supplies, advertising, a listing, or similar. The sender may reference a supposed prior order or claim delivery has already occurred.
They press for prompt payment, warning of late charges or disruption, and provide bank or payment details directly in the chat. The supposed order is vague and cannot be matched to any genuine record, and the attached invoice is easily fabricated.
If the business pays, the money funds the fraudster for something never ordered. Follow-up messages may chase further invented invoices, repeating the cycle.
Common red flags
- An invoice or payment reminder sent via WhatsApp for an unrecognised order
- An attached invoice that cannot be matched to a purchase order
- Claims that an order was placed or delivered, with no record
- Payment details provided directly in the chat
- Pressure to pay quickly to avoid charges or disruption
- Vague descriptions of the supposed goods or services
How to protect yourself
- Match any invoice to a purchase order and delivery before paying
- Treat chat-attached invoices as easy to fabricate
- Verify with the colleague supposedly responsible for the order
- Do not send payment to bank details provided only in chat
- Keep invoice approval within an audited, central process
- Confirm unfamiliar suppliers through independent records
How to report it
- Report the number using WhatsApp's in-app reporting tools
- File a report with your national consumer protection or fraud body
- Notify your bank if a payment was made
Frequently asked questions
A supplier sent an overdue invoice on WhatsApp. Should we just pay it?
Not without checking. A chat-attached invoice is easy to fabricate. Match it to a genuine purchase order and delivery, confirm with the colleague who would have ordered it, and verify the supplier independently before paying.