A business derives its cost to pay accounts payable (AJP) with a corporate card versus other payment methods. The business identifies each merchant to whom the business owes AJP who but does not accept the corporate card. A weighting factor is derived for each such merchant from costs of paying with and without the corporate card, as well as from its history of past payments to the merchant. The benefit to the business is derived, using the corresponding weighting factor, for each such merchant in paying the corresponding AJP to the merchant with the corporate card. Where the benefit exceeds a predetermined threshold, information is sent to each such merchant sufficient for the merchant to receive payment of the corresponding AJP with the corporate card.