A counter invoice is an invoice issued by a customer in response to receipt of a seller’s invoice. It “counters” or confirms the original invoice, providing both parties with a record of their agreement and outlining the details of the transaction. The counter invoice includes information such as price, quantity, shipping fees, payment terms, and other important details. By issuing a counter invoice, buyers are able to make sure that what they paid for matches what was shipped by the seller. Counter invoices also provide crucial protection for sellers, ensuring that customers cannot easily dispute payments or return goods without just cause. In short, counter invoices are vital for any business transaction between buyers and sellers.