nbflint wrote: At what point does a donation become "non-refundable?"
I know what CHQ said to us, and I'd say you'd better call your stake and CHQ BEFORE you proceed with any ideas. Yes, true mistakes are true mistakes, but there is also the potential for fraud...giving an amount now, generating the "paper trail" with canceled checks, bank statements and donation slips, receipts, year-end or monthly donation summaries, and then asking for a refund later, which doesn't generate any trail- ESPECIALLY if a well-meaning clerk "hid" it.
Fraud hopefully is very rare within the church, but must be guarded for vigilantly by every unit throughout the church, and you don't want to seem a part of any of it by changing things...
We must always be above reproach, to "avoid the very appearance of evil." Every unit must work to ensure the integrity of the donation system, from the moment the envelope is sealed by the giver, so that the tax documents we all need to report to government agencies remain without question, as they are now. If we lose the perceived integrity of these documents in the eyes of the outside world, we will all suffer. That's why CHQ has these policies.
Call you stake. Let them send it up the ladder...