The short version: a one-tap buy doesn't hide a fee in your statement. It builds its cost into the price it quotes you. Pay by card and a platform fee and possibly a bank fee sit on top of that. Place your own spot order and the fee is published, but you do the price-reading yourself.
How much more the one-tap route costs, nobody official has put a fixed number on, and I'm not going to invent one. What you can do is measure it yourself in about a minute. That's most of what this piece is for.
Where a "zero-fee" convert keeps its cost
Take Binance Convert as the worked example. Its FAQ says: "Binance Convert pricing does not include traditional trading fees when converting cryptocurrencies." A little further down it adds that "the quoted prices for simple conversions may vary from time to time and from the price available on other markets (including Binance Spot). When you preview a conversion, the quoted amount of assets shown is the actual amount you will receive in your account, and no additional fees apply." (Binance Convert FAQ, marked updated 2026-04-20, checked 2026-09-24.)
Read those together. There really is no separate fee. What you receive is decided entirely by the quote, and the quote is allowed to differ from what the spot market shows at that moment. The same page says it once more: "There are no additional fees beyond the quoted price." And then, plainly: "it is common to see a different price for the same token on Binance Convert and other markets or platforms."
So the only thing worth comparing is the quote. That isn't special to one exchange, either. Coinbase's help page on pricing says that when you place simple buy and sell orders, it "includes a spread in the quoted price", and that the spread is also inside the rate when you convert one crypto into another. It also explains why: the spread lets it lock your quoted price for a short while as the order is processed. Whichever app you use, the checking method below carries over.
Buying with a card: two separate layers
People lump "buy with card" and "convert" together. They start from different places. Convert swaps assets already in your account, and Binance only opens it to users who have completed Identity Verification; a card purchase pulls money from your bank. On the card route, count at least two layers.
The platform layer comes first. A Binance blog guide to buying crypto with a credit card (last updated 2024-10-22) says exchanges "charge a small fee for credit or debit card transactions", usually higher than bank transfers, and that Binance's charge runs "up to around 2%". That's a two-year-old blog post, not the fee schedule. The number that counts is whatever the order screen shows you on the day.
The second layer is your bank. The same post: "Any additional fees will come from the bank and credit card provider's side." If the platform is based outside your home country and you pay in your local currency, you're "likely to incur a foreign transaction fee". And one step earlier, some card issuers simply block crypto purchases, so the post suggests checking that your issuer and payment network allow them before you try.
Other ways of turning cash into crypto, P2P included, each come with their own traps. Those live in the deposit methods guide.
Spot: the fee is printed on a public page
On spot, price comes from the order book, meaning the buy and sell orders other people have placed, and the exchange charges a separate fee on top. Maker and taker rates can differ, and both generally drop at higher tiers.
When we checked in September 2026, the Binance spot fee page listed 0.100% maker / 0.100% taker for a regular user, 0.075% in the pay-with-BNB column, and 0.011% / 0.023% at the top tier, VIP 9. Tiers and rates change, so trust the page on the day you open it. How maker and taker differ is covered in maker, taker and VIP tiers; whether the BNB option is worth holding BNB for is in paying fees with BNB; the full picture across spot, futures and withdrawals is in how Binance fees work.
One line on that fee page is easy to miss: the volume used for tiers is the combined spot volume from spot, margin, Convert, copy trading and trading bots. Your converts count toward it. The Convert FAQ says the same, with one exception: old-to-new token conversions.
What spot costs you is attention. A market order fills against whatever is on the book right then, and on a big order or a thinly traded coin the fill can land worse than the price you glanced at. A limit order might just sit there unfilled. Convert takes that hassle off your hands. That is what you're paying for.
Check both at the same moment
Two screens, open side by side:
- In Convert, type the amount you plan to spend and hit preview. Note the amount you'll receive. Per the FAQ, that previewed amount is what lands in your account.
- On spot, open the same pair straight away and find the lowest ask, the cheapest sell order on the book. Divide your spend by that price, then take off your taker fee.
- Subtract. If the Convert preview comes out below your spot estimate, the difference is what convenience costs you right now. Now and then it may come out the other way; the quote moves in real time.
Two rules. Do it at the same moment; a few minutes apart and the comparison means nothing. And don't place a trade just to test; the preview and the order book are enough. On small amounts the spot fee is often a rounding error, and it's already taken out of your estimate, so whatever gap remains is the spread. If you want the spot fee on its own, the fee calculator will do it.
Convert's limit and recurring modes
Convert also offers limit and recurring options. They sound like spot features. They still run on quotes.
For limit mode, the FAQ says execution "is subject to the quoted price, your specified limit price, market depth and liquidity, and thus it may not always get executed and filled even if the market price momentarily reaches or crosses your limit price." If the chart touched your price and nothing filled, that's the documented behaviour.
For recurring buys: "Please note that recurring prices are different from market prices on Binance Spot." A monthly auto-buy through Convert is priced by quote too.
When paying a bit more is fine
My take: the gap in a Convert quote works like a service charge. You're paying someone else to pick the price, hold it for you, and spare you the order book. Whether that's worth it depends on size and frequency.
- Small and one-off. Topping up a fee balance, grabbing a little of something you need. The gap is small in absolute terms, and learning the order book for it is poor use of an afternoon.
- Every month. The gap repeats. This is where learning spot pays back; the first-buy step of the beginner guide shows where the entry is. Remember that Convert's recurring option is still quote-priced.
- One large order. The gap scales with it. Run the side-by-side check before you pick a route.
A split that keeps things simple: Convert for small one-off amounts, and learn spot for the regular monthly buy. If you never want to look at an order book, sticking with Convert is fine as long as you know where the difference sits. Either way, the coin you end up holding still moves in price. A smaller spread does nothing to protect the principal, so only put in what you can afford to lose.
Two questions readers ask
If Convert says no fees, is it actually free?
No separate fee line, yes. Binance's own wording is that Convert pricing does not include traditional trading fees and there are no additional fees beyond the quoted price. The quote itself can differ from the spot price, though, so whatever the cost is, it shows up in the amount you receive.
My card was charged more than the order page showed. Who do I ask?
Work out which layer it is first. The fee on the order page is the platform's. Anything extra on your card statement, such as a foreign transaction fee, belongs to your card issuer, and only your bank can explain it.
Everything here comes from the official pages cited above, checked on 2026-09-24; we didn't place test orders for this piece. Next time you're about to tap buy, open the spot screen next to it first. After a couple of comparisons you'll know roughly how much you're willing to pay to skip the order book.