[MCNetwork]

Actually the main purpose of a lockbox is to facilitate a credit card split cash advance in which the merchant does not wish to change processors to one that the funding company has a split agreement with or if the funding company wants to include AMEX deposits in the split (because AMEX doesn't split with funding companies). The funding company takes his split (i.e. 20%) from the lockbox deposits. It does not "negate" the NSF days. The NSFs are still happening in the business checking account because the merchant is having cash flow problems.

As far as credit card funds being ACH'ed immediately from the lockbox to a merchant's bank account? It happens within 24 (sometimes 48) hours. It's not "immediate." Again, this delay is what creates additional strain on a merchant's cash flow.