"Give the customer their money back" can mean at least three different things in payments, and which one actually happens changes who initiates it, how fast it moves, and whether a fee comes back with it.
A refund is the merchant's own choice
A refund is initiated by the merchant, voluntarily, after a transaction has already settled — you're choosing to return the money, and it typically takes several business days to reach the customer through the same rails the original payment used.
A reversal usually means "before it settled"
A reversal, sometimes called a void, cancels a transaction before it's fully settled — often same-day — which is why it's usually faster and can avoid a processing fee a full refund might not recover.
A chargeback is neither — it's the bank stepping in
Unlike the first two, a chargeback isn't something the merchant does at all — it's the customer's bank forcibly reversing the payment on the customer's behalf, outside of the merchant's control, and it comes with its own dispute process entirely.
Key takeaways
- A refund is merchant-initiated, after settlement, and takes the longest to land.
- A reversal or void cancels a transaction before it settles, usually faster and sometimes fee-free.
- A chargeback is bank-initiated, not something the merchant chooses to do.
- Knowing which one applies changes how quickly you should expect money to move.