Embodiments of the present invention provide apparatuses and methods that help validate and process payment instruments for different products, such as but not limited to credit card payments, mortgage payments, or any other type of payment. The payment amount from a payment instrument may be determined from a multiple locations on the payment instrument. In addition, a payment amount may be determined from a remittance document that accompanies the payment instrument, such as a remittance coupon that is mailed along with a check. The amount in the remittance courtesy box, the minimum amount due, the last payment made, and the full balance remaining may all be captured and used to validate the amount on the payment instrument. Moreover, one or more confidence scores for the amounts on the payment instrument and remittance document may be used to validate the payment amount.