Crypto Fee Rebate Guide: UID Binding and Money Flow

A fee rebate returns part of the trading fees you pay an exchange. Once you sign up or bind your UID through Fee Otter, your rate is the exchange's auto-rebate plus Fee Otter's extra rebate: 40% on Binance (20% auto + 20% extra) and 70% on Gate (20% + 50%), for example. Pay 600 USDT in Binance fees in a month and you get 240 USDT back (checked October 2026).

Every time you place an order on a crypto exchange, you pay a trading fee. It is the most reliable revenue line an exchange has, and most traders never realize they can claw part of it back. A fee rebate returns a share of the fees you have already paid straight to you. This Fee Otter guide walks through the basic definition, how UID binding works, how the money actually flows from the exchange back to your account, the fee schedules and rebate rates of each exchange, a worked rebate example, and the safety and compliance questions people worry about most.

What is a crypto fee rebate?

A fee rebate means the exchange returns part of the trading fees you pay through a referral channel. It rests on a fact most traders overlook: an exchange's trading fee already contains a "referral share": a budget the exchange is willing to hand to the channels that bring in users, which the channel can then pass back to the people actually trading.

In other words, a rebate comes out of the exchange's marketing budget. The fee you pay does not change; what changes is whether part of it ends up back in your pocket. For high-frequency or large-size traders, rebates add up quickly.

Rebate vs. discount vs. cashback

• Fee discount: you trade at a lower rate at the moment of the order, so less is deducted up front.
• Fee rebate: you trade at the standard rate first, then part of it is returned afterwards, usually settled daily, fully auditable, with withdrawals on request.
• Cashback / campaign rewards: one-off marketing incentives with variable timing and thresholds; not the same as an ongoing rebate.

Fee Otter takes the rebate route: after binding, you keep trading on the exchange as usual, and we return the referral share the exchange settles to us at that exchange's rebate rate, itemizing every entry inside our rebate data platform (Fee Otter).

How UID binding works

The technical core of a rebate is UID (User ID, the unique number an exchange assigns to each account) binding. The exchange's referral system records which channel brought in a given UID. Once that binding is established, every fee that account later generates is settled by the exchange to that channel as a referral share.

Two binding scenarios

• New sign-up: register with our invite code. Step-by-step walkthroughs include the Binance registration guide and the Pionex registration guide.
• Rebinding an existing account: if you already have an account, or it is bound under another invite code, you can apply to rebind to our channel per each exchange's rules. Conditions and effective timing differ by exchange; see the matching rebind guides: Binance rebind, OKX rebind, Bitget rebind, Bybit rebind, Gate rebind, WEEX rebind and MEXC rebind, XT.COM rebind and HTX rebind. Which exchanges allow late code entry and how each rebind works is summarised in the referral code late-entry and rebind rules for each exchange.

Binding only involves the referral relationship. It never requires your account password or any withdrawal-enabled API permission. Safety is covered below.

The rebate money flow: exchange to Fee Otter to you

The money flow has three legs:

1. You → Exchange: you trade normally, and the exchange charges its published fee (maker/taker; see the exchange overview below).
2. Exchange → Fee Otter: under the referral agreement, the exchange settles the referral share of your fee to us as a channel, typically accrued daily.
3. Fee Otter → You: we then return your portion, at that exchange's rebate rate, into your available balance, which you can reconcile entry by entry before requesting a withdrawal.

This is where we differ from most KOL invite codes: many KOL codes simply pass you the roughly 20% the exchange auto-returns and stop there. Fee Otter settles "the 20% auto-return plus an extra rebate" together. The data platform shows the rebate amount tied to each trade and your available balance.

Why exchanges pay rebates

A rebate looks like an exchange handing out money, but it is a calculated acquisition cost, which is why rebates last instead of disappearing like a short-lived promo.

• Reallocated acquisition cost: acquiring an active trader costs the exchange marketing money anyway. Rather than spend it all on ads, it turns part into a referral share so channels bring in real, recurring traders, which is more cost-effective for the exchange.
• Fees are a scale business: an exchange earns "volume × rate." The long-term fees from one more active user far exceed the small share returned. Higher rebates make users stickier, volume grows, and the exchange earns more overall.
• A liquidity flywheel: makers provide liquidity, takers consume it. Using rebates to encourage more trading deepens the order book and tightens spreads, which attracts still more traders.

A rebate is the exchange's public acquisition mechanism. Your only job is to stand on the "receiving-a-share" side instead of leaving that budget with the exchange or a middleman KOL.

The 20% auto-return vs. the extra rebate: where the line is

Most exchanges' referral rebates split into two parts:

• Exchange auto-return (about 20%): as long as the UID is bound under a valid channel, the exchange automatically settles about 20% of the fee as a referral share. This is the common baseline of nearly every legitimate channel (see the Binance affiliate program guide and the OKX affiliate FAQ).
• The channel's extra rebate: how much of that share a channel passes on varies. Fee Otter adds an extra portion on top at every exchange. That is the main gap between us and a "20%-only" invite code.

Total rates differ by exchange: Binance 40% (20% auto + 20% extra), Bitget 50% (20% + 30%), Gate 70% (20% + 50%), WEEX 70% (60% auto + 10% extra) and MEXC 60% (20% + 40%). Bybit is different: it is not a "20% + X%" stack but a single combined total of 40%, all of it Fee Otter's extra rebate. OKX is a 20% auto-rebate + exclusive rewards; contact support about our exclusive OKX rewards and promotions. To compare rebate rates and net effective fees side by side, see our fee and rebate comparison; for head-to-heads, see the Binance vs OKX fee rebate comparison, the OKX vs Bybit fee rebate comparison and the MEXC vs Gate fee rebate comparison.

Fees and rebates across the major exchanges

The table below summarizes spot and futures maker/taker fees across the exchanges we cover. The figures are rendered live by the platform, so treat what is displayed as authoritative:

Fees verified on 2026-09-24 (each exchange's official fee schedule). · Methodology

Fees are only half the cost story; what really drives your long-term net cost is "raw fee − rebate." At the same taker rate, the gap between a 20% and a 50% rebate widens into a meaningful sum at high volume.

How the rebate rate works: one rate per exchange

Fee Otter pays one rate per exchange. Your total rate is the exchange's auto-rebate plus Fee Otter's extra rebate, and both depend on which exchange you bind.

Rebates start once binding takes effect

Once binding is established, every fee the account generates afterward counts toward your rebate. The exchange typically settles the referral share to the channel daily, and Fee Otter then adds your portion to your available balance, so there is no wait for a month-end settlement.

A worked rebate example

Suppose you pay 600 USDT in fees on Binance in a month. Binance's combined rate is 40% (20% exchange auto-rebate + 20% extra), so you get 240 USDT back that month. If you are already a VIP at an exchange and want to rebind or sign up at another one, contact support: we can help you apply for special trading perks or a higher rebate rate.

Each exchange's current rebate rate is shown live in the table below:

After binding, every rebate entry and your available balance appear in real time in our rebate data platform (Fee Otter), which most channels that only hand out an invite code do not offer.

Are rebates safe? Compliance, risk and our live capital

A fee rebate is a public exchange mechanism, but you should still check it from two angles: safety and compliance.

Binding is not surrendering control of your assets

A rebate binding establishes only a referral relationship. It touches your UID, not your account password or any withdrawal-capable API permission. Your assets stay in your own exchange account, under your own control. Fee Otter does not custody or touch your principal; we only return, per the rules, the referral share the exchange settles to us.

Rebate binding touches your UID, never your assets. Any claim that you must hand over withdrawal permission or your password to "receive rebates" is not a legitimate rebate.

Our positioning: research and information, not asset management

Fee Otter provides data and information services for fee rebates. It is not asset management and not managed trading, and we make no return guarantee on any trading outcome. The strategies and live data shown on the platform are produced by real capital our own team commits at each exchange, used to show that the data is genuine, not to solicit managed accounts. Every trading decision and its risk are yours to bear.

The risk checks you should do

• Place orders and withdraw only through the exchange's official app or website; a rebate channel never needs to hold your withdrawal permission.
• Treat the exchange's official pages and Fee Otter's announcements as the source of truth for invite codes and rebinding, and avoid third-party lookalike links.
• A rebate offsets trading cost; it is not investment income. Size your trading to your own risk tolerance.

FAQ

Can everyone earn a fee rebate?

As long as your exchange UID is bound under a valid referral channel, the fees you generate afterward settle a rebate. New users have the simplest path via an invite code; existing accounts apply to rebind per each exchange's rules.

How often are rebates settled, and where do I check?

The exchange side typically settles the referral share to the channel daily, and Fee Otter then returns your portion to your available balance. You can reconcile every rebate entry and your available balance, and request a withdrawal, inside our rebate data platform (Fee Otter).

Why do some invite codes only give 20% while you can give more?

About 20% is the exchange's auto-return baseline, and many KOL invite codes pass on only that. Fee Otter adds an extra rebate on top, so the total is higher: for example 40% on Binance, 50% on Bitget and 70% on Gate. The platform shows the current rates live.

Is the rebate rate the same at every exchange?

No. Each exchange has one rate, made up of the exchange's auto-rebate plus Fee Otter's extra rebate: for example Bitget 50%, MEXC 60% and Gate 70%. The rate table above shows each exchange's current rate.

Why is Bybit's rebate described differently?

Because Bybit's rebate is not a "20% auto + extra" stack but a single combined total of 40%, all of it Fee Otter's extra rebate. It is one of the ways rebate mechanics differ across exchanges, so it is worth reading the Bybit rebind guide before rebinding.

Does binding a rebate affect my trading or asset security?

No. Binding only establishes a referral relationship tied to your UID; it needs neither your account password nor withdrawal permission. You keep trading in the exchange's official app, and your assets stay under your control. Fee Otter is a research and rebate-data service; it does not custody principal or guarantee returns.

What is OKX's rebate?

OKX is a 20% auto-rebate + exclusive rewards; contact support about our exclusive OKX rewards and promotions. See the OKX rebind guide for the rebinding process.

Further reading

• Binance fee rebate: how to get 40%
• Bitget fee rebate: how to get 50%
• Bybit fee rebate: how to get 40%
• Other exchanges: HTX fee rebate guide, MEXC fee rebate guide, WEEX fee rebate guide, XT.COM fee rebate guide, Pionex fee rebate guide, Gate fee rebate guide
• By how you trade: algo, grid and arbitrage, high volume, beginners, spot investors, day trading
• Run the numbers first: how much fee rebate you can earn, with worked examples

Rules follow each exchange's official and platform announcements.

ⓘ Rates shown are for futures; spot: Gate 65%, Bitget 45%, WEEX 45%.