I agree with nick. Its bad business for the merchant and lender community. But we just funded a merchant last week for $25k. The ISO funded the merchant several times and his balance was $150k. Our office spoke with the funder and they agreed to wanting to keep the merchant on the books. They gave us the go forward on the 2nd.

Although it is a strict policy of ours not to stack. additionally every month we have performing merchants that stack on us and we decline them for renewal.

In short stacking is bad business you'll hurt your merchants and the funders you stack on.