Middle-market businesses lose an average of almost $300,000 annually to invoice fraud, according to a recent survey by software company Medius and researcher Censuswide. Invoice fraud can be challenging to spot — and even more difficult to recover from — but your company can take steps to prevent it from happening. Common types The most common type of invoice fraud is fraudulent billing. In billing schemes, a real or fake vendor sends an invoice for goods or services that the business never received (and may not have ordered in the first place). Overbilling schemes are similar. Your company may have received goods it ordered, but the vendor’s invoice is higher than agreed upon. Duplicate billing is where a fraud perpetrator sends you the same invoice more than...