On the trading screen you've probably seen an unassuming option: "pay fees with BNB", maybe with a discount written beside it. Many beginners either don't notice it or don't dare click — they don't know what BNB is and fear that turning it on deducts something it shouldn't. In fact it's one of the simplest and most worthwhile saving switches on Binance. This piece takes a few minutes to explain it fully: what it is, why it saves, how to turn it on, how much to keep, and when it's actually less worthwhile.

1. What BNB is

BNB is Binance's own platform token. You can roughly think of it as "the general-purpose token of the Binance ecosystem": it can pay fees, take part in some platform activities, and so on. For a beginner, all you need to remember now is one thing — in trading, holding a little BNB and turning on the discount gives your trading fees an extra cut.

It's also a crypto asset that rises and falls, with its price moving with the market. That point comes up later, because it bears on the "is it worth it" judgement. To look up more of BNB's uses and the official introduction, search the Binance help center.

2. How the discount works: cut at settlement

Before the discount, put it in the context of the whole rate system: your base trading fee itself is written on the official Binance fee page, and the BNB discount is a cut on top of that base rate, not a replacement for it. Grasp that relationship and the rest is easy.

The mechanism is plain enough: once you turn on "pay fees with BNB" in the trading screen, at the moment the fee settles the system deducts that fee from the BNB in your account first, and gives that part a discount. On spot, this discount has long sat around 25% off (whatever Binance's page shows at the time). The official note on this mechanism is in Binance's FAQ on paying fees with BNB.

In other words, the fee you'd otherwise be charged is reduced as long as you pay with BNB. Unlike the rebate, it takes effect right at settlement — the fee number you see is directly smaller, not returned afterward. That's its biggest difference from the invite-code rebate, which we compared in detail in what invite-code rebates really are.

The spot and futures discounts may differThe BNB discount percentage isn't necessarily the same across trading types (spot, futures), and futures usually isn't the same number as spot. Go by the discount shown on the page for the type you're trading — don't apply the spot figure to futures. For how the various fees add up, see how Binance fees are actually calculated.

3. How to turn it on: where the switch is

The switch is usually in the fee / settings area of the trading screen, or in your account's fee settings — typically just a "use BNB to pay fees / BNB discount" toggle. Turn it on, confirm it's set to on, and you're done. The rough steps:

  • go to the spot trading screen and find the fee / settings entry;
  • turn on the "pay fees with BNB" toggle;
  • confirm you have a little BNB in the account (if not, buy a little first — see the next section);
  • after that, when you order, the fee is paid with BNB first and discounted.

This is a one-time setting — once on it keeps applying, no need to switch it per trade. The interface may change with versions; if you're unsure, search "BNB discount" in the Binance help center for the official note to compare against.

4. How much BNB to keep, and what happens when it runs out

You don't need to hoard. The logic is simple: your BNB is only for paying fees, so keep enough for a while of trading and that's it.

  • How much depends on your trading frequency. If you trade occasionally, a small amount that covers fees for a while is enough; if you trade a lot, keep a bit more to avoid topping up often. There's no standard answer — go by your own usage.
  • Running out isn't a problem — you just stop getting the discount. If your BNB balance can't cover the fee at some settlement, the system usually switches automatically to paying in your trading coin (e.g. USDT), charged at the full rate without the BNB discount. The trade won't fail, and nothing else gets deducted oddly — you just miss that one cut. This "deduct BNB first, fall back to the trading coin if short" logic is also clearly written in the official FAQ.
  • So remember to top up occasionally. When you notice the BNB is nearly gone, top up a little and the discount keeps applying.

5. The trade-off of BNB's price moving

This is the one spot in "is it worth it" you need to think about. Because BNB is an asset that rises and falls, holding it for the discount means you incidentally hold a little of BNB's price movement.

But don't be put off — the effect is actually small:

  • The discount is converted at the value at the time, and the percentage doesn't change. Whether BNB has risen or fallen, at settlement it offsets the fee by its value at that moment, with the discount percentage unaffected. So price moves don't make you "offset less".
  • All you carry is the price movement of "that little BNB used to pay fees". Since the amount you keep is small to begin with (only enough to pay fees), this movement is almost negligible against your total assets.
  • If the movement bothers you, don't hoard. If you don't want any BNB price exposure at all, keep the balance at "just enough for a while" and don't treat it as an investment to stockpile.
The conclusion is clearFor the vast majority of beginners, turning on the BNB discount is worth it: the fee you save is certain, while the price movement you carry comes from a small balance and is almost negligible. Whether it's worth it is easy maths.

6. Stack it with the invite-code rebate to save more

The BNB discount isn't an isolated saving move — it can stack with the invite-code rebate. The two act at different stages: the BNB discount cuts at settlement, the invite-code rebate returns a percentage afterward. Both work on top of the base rate — one discounting on the spot, one returning afterward — so one before, one after, they usually both apply.

Run a sum and it clicks. A spot taker trade with a raw fee of 2 USDT: BNB discount only about 1.5, invite-code rebate only (20% returned) about 1.6, both about 1.2. This is just an estimating frame and the real figure follows your statement, but the direction is stable: stacking the two clearly beats using one. And both only need setting once — enter the code at sign-up, turn on the discount on your first trade — after which they keep working. To see how much your own case differs, plug it into the fee calculator for the clearest view.

Turn on both savings
Enter our invite code BN0128 at sign-up for a percentage off your trading fees; once inside, turn on the BNB discount in the trading screen — stacking the two saves more.

* The final rate is whatever Binance shows on its page; the perk comes from registering through our invite code and adds nothing to your cost.

Sign up with our code

7. Editorial check

Whether the switch is actually working, you can check at a glanceMany people turn on the discount but aren't sure it's really saving — checking is actually simple. Per the mechanism, once "pay fees with BNB" is on, at settlement the system deducts the fee from your BNB balance first and discounts it. What you should focus on is the detail after an order fills: the "Fee" line changes to being priced in BNB, with the amount a notch lower than without the discount — roughly the discounted level. So the way to verify is: turn the switch on, do any spot trade, then open the order detail and confirm that line is BNB-priced and the amount is smaller. If those two match, the discount is working — no need to fuss over the exact few cents saved.

In short: BNB is Binance's platform token, and turning on "pay fees with BNB" discounts your trading fee at settlement (around 25% off on spot, per the page); keep enough BNB for a while, and running out just stops the discount rather than causing trouble; the price movement comes from that small balance and barely matters. Stack the invite-code rebate on top and that's the cheapest combination for an ordinary person.

Lin Yue · Bitu editorial
Exchange notes written for beginners. Lin Yue is a pen name; we don't pretend to be anyone's expert — we just write down the steps and traps we've checked again and again. For decisions involving money, go by the official pages and your own verification.

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