The use of the digital tax receipt (CFDI), caused large changes in billing due to the different implements that are incorporated into this new type of billing to be able to have better control over them, as well as greater security, the tax authorities decided to implement an invoice method known as a payment supplement in which the payments received are credited , this investigation is intended to show the method by which the payment of a CFDI is credited when the payment is not made in a single exhibition because the tax authorities require us to issue a CFDI with the total of the purchase or service and then make another CFDI for each payment that is made.