THE SHORT LIST
The shortest thing on this site, because the list itself is short. Four situations where the machine is the right call, and the reasons that don't make the cut.
This site spends a lot of words on how expensive these machines are. For balance, here is when they're the right answer.
Four situations, each with a condition attached.
The strongest case, and the only one with no substitute.
Exchanges take transfers, cards and local payment rails. None of them take physical notes. So if you have no usable bank account for any reason — newly arrived, account frozen, or any other circumstance — the machine isn't the expensive option, it's one of the very few doors that is open.
Here the 10% to 20% is buying you the ability to do the thing at all, not a bit of convenience. That's money well spent.
Conditional on that "need" being something you can actually articulate.
The exchange route has two waits built in, identity review and funds clearing, and neither comes with a guarantee. If you have a genuine deadline — an on-chain payment window, something that has to settle today — then immediacy has real value.
But ask yourself honestly whether the deadline is real. "I'd like it today" and "it has to be today" are different sentences. If it's the first, the time saved rarely justifies the gap.
One kind of urgency that doesn't count
If the time pressure is coming from another person — someone on the phone telling you there are consequences if you don't pay now — this section does not apply and the situation is entirely different. Go to the three questions.
On small sums the absolute difference is small too, so the convenience may genuinely be worth it.
Buying a hundred or two, 15% is a few tens. Registering an account, waiting for verification and waiting for a deposit to clear in order to save that is a reasonable thing to decline.
There's a floor to this, though. Small purchases are exactly where fixed costs bite hardest — the network fee is a flat amount, and many operators add a flat charge as well. Below a certain size the machine becomes the worst option rather than an acceptable one.
Document types not accepted, address proof you can't produce, face checks that keep failing. These things happen.
The machine's lower tier has a lower bar and may let you complete a transaction. Valid — with one caveat: a lower bar is not anonymity. Your phone number, document images and transaction history are still retained, and the transfer is still on a public ledger. Covered here.
Because the qualifying situations genuinely are few, and padding it out would make it useless.
Plenty of "who is X for" articles list a dozen scenarios, which reads as thorough and functions as meaningless — everyone finds themselves somewhere on a list that long. Four entries, because beyond those four the machine is either offering something you don't need or something you can get more cheaply.
There's also a hierarchy inside the four. Only the first has no alternative. Numbers two through four are variations on faster or easier, and faster and easier have a price — which happens to be that 10% to 20%. You can work it out and then decide whether it's worth it.
Another version of the same test: imagine explaining the decision to a friend who has no interest in crypto. If the sentence contains "because I don't have a bank account" or "because I needed it today", fine. If the only thing you can say is "because it was right there", you already know.
If you're unsure, the decision tool asks four questions and gives you a blunt answer. If you want the number, the calculator will show you the gap.
Four situations: you hold cash and have no usable bank account, you have a specific reason to need coins on-chain today, the amount is small and it is a one-off, or online identity verification genuinely will not complete for you. In those cases the high fee buys something real — feasibility or immediacy.
Relatively, but only above a certain size. On small sums the absolute cost difference is modest, so the convenience can be worth it. However the network fee is a fixed amount rather than a percentage, and many operators add a flat charge as well, so very small purchases lose a disproportionate share and become the worst option.
It is a poor choice for that. Every transaction pays the full 10% to 20% again, whereas opening an exchange account is a one-off effort after which each purchase costs well under 1%. The more often you buy, the wider the cumulative gap becomes.
Not financial advice. Whether to use a bitcoin ATM is your decision; this page only sets out cost and suitability considerations.