Your perspective is valuable, but the Bureau has a different one. You complete the combined disclosure, which you have to provide before the customer pays for the transfer. Then you ADD an annotation (it could be as simple as a PAID stamp) to show that he's paid for the transfer, making it a true receipt.
And the regulation says that the in-house customer who is paying from is account with you pays at the time he gives you the OK to charge his account, regardless of the time at which you pull the funds.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8