Every Bitcoin ATM transaction prints a receipt, and most people fold it into a pocket and forget about it before they’ve left the gas station parking lot. That receipt is the only document you’ll have showing what you actually paid for your bitcoin, and if you ever sell, spend, or trade that bitcoin, you’ll need it. In the United States, cryptocurrency is treated as property for tax purposes, which means every disposal can create a taxable gain or loss. Without a record of what you paid, that calculation gets made for you, and rarely in your favor.
What to write down at the machine
Before you walk away from a Bitcoin ATM, record six things. Some are on the receipt already; others you should note yourself in a phone app or a notebook.
- The date and time of the transaction.
- The amount of cash you put in.
- The amount of bitcoin you actually received, in BTC, not just dollars.
- The effective rate you paid, meaning the price per bitcoin once fees and spread are included, not the headline market price you saw quoted somewhere else.
- The machine identifier, which appears on the receipt along with the timestamp and the rate applied.
- The wallet address the bitcoin was sent to.
That last item matters more than people expect. If you ever need to prove a specific batch of bitcoin came from a specific machine on a specific date, the wallet address is what ties the receipt to the blockchain record. Keep a photo of the receipt itself, since thermal paper fades within months.
Why the “amount of cash in” isn’t your cost basis
Cost basis is simply what you paid for an asset. At a Bitcoin ATM, that is not the cash you fed into the slot. It’s the cash plus the fee plus the exchange rate spread, because all of that left your pocket to acquire the bitcoin you walked away with. If you put in $200 and received bitcoin worth $170 at the actual market rate, your basis is still $200, not $170, because $200 is what it cost you.
This distinction matters because Bitcoin ATM fees run high. The Federal Reserve Bank of Kansas City reported in 2023 that the median fee for buying bitcoin from a US Bitcoin ATM, self-reported by operators through Coin ATM Radar, is 16 percent of the transaction value, with a median sell fee of 15 percent. On top of that, the same report estimated exchange rate costs add another 5 to 7 percent, meaning total fees of 20 percent are not uncommon. By comparison, the Fed’s research put the total cost of actually operating a Bitcoin ATM at only 3 to 6 percent of revenue. The gap between what it costs to run the machine and what customers are charged is the spread that inflates your basis, and if you don’t record it at the time of purchase, you’ll have no way to reconstruct it later.
There’s also a reason to be skeptical that 16 percent median figure. It’s self-reported by operators, and the Fed noted that operators charging above-average rates commonly disable that reporting altogether. That means the published median is likely biased low, and plenty of machines charge more than 16 percent without it ever showing up in the average. Whatever rate applied to your specific transaction is the one that matters for your records, not the median.
What happens if you don’t keep records
If you sell bitcoin later and can’t document what you paid for it, the assumption made about your basis can work against you. Without proof of basis, a later sale can be assessed using an unfavorable assumed basis, which in practice can mean paying tax as if your original cost was zero or close to it. That turns a modest gain into a much larger one on paper, purely because you didn’t keep a receipt.
This is also unforgiving territory because bitcoin transactions are irreversible once confirmed. There is no chargeback equivalent, no bank that can reverse a transfer if you made a mistake or if you later realize you needed better documentation. Whatever left the machine and landed in your wallet is final, and the only paper trail is what you kept yourself.
Machine reliability is part of the record-keeping problem
Keeping good records assumes the machine and the operator behind it are still around when you need to reference them. That’s not guaranteed. USA Crypto Reports verified 200 Bitcoin ATM listings and found that 41 no longer existed, roughly one in five. Operators also fail outright: Bitcoin Depot filed for Chapter 11 bankruptcy in May 2026, and more than 9,000 of its machines were deactivated. If the operator that ran your machine disappears, you won’t be able to call them for a duplicate receipt or a transaction history. Your own copy is the only one that will still exist.
Before you use a machine, it’s worth checking our verified Bitcoin ATM directory to confirm it’s still active rather than relying on an old listing. And if you show up somewhere and find a machine gone or moved, you can report a machine that has closed or moved so the listing gets corrected for the next person.
The regulatory backdrop, briefly
US Bitcoin ATM operators are classified as money services businesses and are subject to federal anti-money-laundering obligations, with money transmitter licensing handled state by state rather than through a single national system. That patchwork is part of why fee structures, receipt formats, and even machine identifiers vary so much from one operator to the next. It’s also a reason to be deliberate about what you record yourself instead of assuming the operator’s paperwork will be consistent or permanent. If terms like “money services business” or “cost basis” are unfamiliar, the site glossary has plain definitions worth a look before your next transaction.
None of this is tax advice, and nothing here should be read as a substitute for guidance from a qualified tax professional who can look at your specific situation. It’s general information about what records exist and why they’re worth keeping.
Next time you use a Bitcoin ATM, take thirty seconds before you leave the machine to photograph the receipt and jot down the wallet address and the effective rate in whatever app you use to track expenses. That small habit is the difference between having a clean record at tax time and guessing.
