What Is BFUSD? BYUSDT, LDUSDT, BGUSD and Other Yield-Bearing Exchange Margin Assets: Where the Yield Comes From, Conversion Fees and Risks

USDT already sitting in a futures account as margin normally earns no interest. To change that, exchanges have launched “yield-bearing margin assets”: you swap USDT for something like BFUSD or BYUSDT, and it works as margin while earning a yield. The names are similar but the rules differ a lot. Below, based on the official documentation, is what BFUSD is and how it compares with ordinary flexible savings.

The short version: in the official documentation I checked on 14 October 2026, BFUSD and LDUSDT (Binance), BYUSDT (Bybit) and BGUSD (Bitget) are all internal exchange tokens that cannot be withdrawn, and swapping them back 1:1 for USDT depends on the exchange’s redemption commitment. Their yield sources differ: BFUSD relies on funding-rate hedging and staking, LDUSDT and BYUSDT earn the interest from flexible-savings lending, and Bitget sets BGUSD’s yield itself. Before you switch, do two calculations: how many days of yield it takes to cover the fees for swapping in and out, and how much flexible-savings reward you give up. At Bybit, for example, switching to BYUSDT earns at most about 5 USDT less a year, but swapping in and out may carry a service fee.

This article is a summary of information. It is not investment advice, and it does not suggest that anyone open futures positions or add leverage to earn these yields. It only explains how people who already hold a margin balance can understand these products. APRs, fees and rules all change. The figures here are snapshots of official pages or official APIs on the dates shown, not guaranteed returns; check what the exchange shows at the time before you use any of them.

What is BFUSD? BYUSDT, LDUSDT and six approaches in one table

The table below covers each exchange’s way of letting margin earn a yield (official documentation checked on 14 October 2026; OKX Auto Earn+ checked on 12 October):

Sources: Binance BFUSD FAQ (updated 7 February 2026), announcement on moving BFUSD to Binance Earn, Binance flexible products guide (updated 29 September 2026), Bybit BYUSDT guide (updated 23 June 2026), Bitget BGUSD terms, OKX USDG rewards and OKX Auto Earn+, all checked on 14 October 2026 (Auto Earn+ on 12 October).

These six approaches fall into three groups:

• Internal exchange tokens: BFUSD, LDUSDT, BYUSDT and BGUSD. What you receive is not USDT but an entry on the exchange’s ledger, usable only on that exchange and redeemable there for USDT.
• An ordinary stablecoin plus platform rewards: OKX’s USDG. USDG itself is a stablecoin, and OKX pays the rewards separately.
• No swap: OKX Auto Earn+. Your margin stays in the original USDT, and the idle part is lent directly. For a comparison of each exchange’s “no swap” auto earn features, see “Exchange Auto Earn Compared”.

Where the yield comes from: funding rates, lending interest, or the exchange’s own decision

All of these let margin earn a yield, but the sources differ a lot, and the source decides when the APR drops.

BFUSD: funding-rate hedging plus staking, with a floor of 0

According to the Binance BFUSD FAQ and the explanation of how the APR is set:

• Source: Binance uses the funds that subscribe to BFUSD for delta-neutral hedging between spot and futures to collect funding rates, and also stakes (for example, staking ETH in Binance Earn and taking the WBETH yield).
• How the APR is set: Binance sets each calculation day’s APR the following day, taking into account all holders’ eligible balances, that day’s BFUSD income, and how much the reserve fund needs.
• The floor is 0: when funding rates turn negative and hedging costs money, that day’s APR can be 0 with no rewards, but it is never negative.
• Reserve fund: BFUSD launched with a US$1 million reserve fund, topped up afterwards with income not paid out to holders, to absorb the cost of negative funding rates. It is separate from the futures insurance fund.

Binance Academy’s “What Is BFUSD” (updated 25 June 2026) also describes a “base rate” and a “boosted rate”, but the article is labelled as a third-party contribution. The official FAQ I checked does not describe these two rates, so go by what your account shows.

My inference: BFUSD’s yield is tied to funding rates. When many traders are long and funding rates are high, the yield is high; when funding rates stay negative for a long time, the yield may be 0 for many days in a row. It is closer to a strategy run by Binance than to plain interest.

LDUSDT and BYUSDT: flexible-savings lending interest, minus the rewards

• LDUSDT: according to the Binance flexible products guide, LDUSDT keeps earning the real-time APR of flexible USDT, without the tiered bonus APR. Flexible USDT used as collateral for flexible loans cannot be swapped for LDUSDT. Binance’s flexible yield comes from lending to other users through its margin and loan products.
• BYUSDT: according to Bybit’s guide, BYUSDT is fully backed by the corresponding flexible USDT and uses the same APR mechanism, but without the platform reward APR. Bybit’s own example: when the platform reward APR is 6.3%, BYUSDT earns only the 1.3% base APR, however much you hold. Yield accrues hourly (only full hours count) and is paid in BYUSDT to the UTA at about 00:30 (UTC) each day. Bybit’s Easy Earn FAQ does not say where the flexible yield comes from.

BGUSD and USDG: rewards the exchange decides

• BGUSD: Bitget’s terms state that Bitget manages the BGUSD pool for its own account and holders have no ownership of the assets in it. Bitget sets the daily APR at its discretion, and it can be 0. Rewards are usually paid in USD stablecoins at 00:00 (UTC) the next day.
• OKX USDG: OKX’s page states that OKX sets the APR at its discretion and that the rewards do not come from Paxos, USDG’s issuer. When I checked on 14 October 2026 it was 3.5% for regular users and 4.1% for VIPs, with no cap on holdings. Each period runs Monday to Sunday; the reward = that week’s average daily USDG balance × APR ÷ 52, paid in USDG to the funding account at 12:00 (UTC+8) the following Wednesday. OKX can adjust, suspend or end it at any time.

Which accounts and margin modes accept them

Yield-bearing margin assets count as margin only in certain modes, so check your account mode before you switch (official documentation checked on 14 October 2026):

Sources are the same as the table in the previous section. The collateral ratio means “how much margin one unit of the asset counts for”. OKX lists 98%, so 10,000 USDG counts as US$9,800 of margin. Bitget’s terms state that Bitget decides BGUSD’s collateral value and can apply a valuation discount; the current ratio is on a separate page it publishes.

Conversion fees and yield: more or less than ordinary flexible savings?

What swapping in and out costs

Sources are the same as the table in the first section. A contributed Binance Academy article says BFUSD’s subscription and redemption fees are “usually 0.1%”, which conflicts with the official FAQ’s “no subscription fee”; go by what the screen shows when you place the order.

BFUSD has one more rule that is easy to miss: the eligible balance is the lowest point of the day (UTC), and Binance takes a random snapshot about once an hour. Amounts subscribed or redeemed on a given day earn no reward that day, so you may get nothing on both the first day you buy and the last day you sell.

How many days to cover the fees

You pay the swap fees once, while the yield builds up day by day. The break-even period is: break-even days = round-trip fee ÷ APR × 365. The fees and APRs in the table below are assumptions, not the actual figures of any product, and only show the order of magnitude:

Take 10,000 USDT with a 0.1% round-trip fee: the fee is 10 USDT. At a 3% APR you earn about 0.82 USDT a day, so it takes around 12 days to break even. If you hold for less than the break-even period, switching loses money. BFUSD may pay nothing on the days you buy and sell, so the real break-even point is a day or two later.

How much BYUSDT differs from keeping flexible savings

Bybit’s flexible savings use tiered rates, and the high APR in the first tier includes platform rewards that BYUSDT does not receive. I used the figures from Bybit’s official Earn API on 14 October 2026 (6.94% on the first 100 USDT, 1.94% on the rest) and took BYUSDT’s APR as 1.94% (an inference from Bybit’s statement that it earns only the base APR):

Above 100 USDT, the difference is always about 5 USDT: all you lose is the 5-percentage-point reward on the first 100 USDT. What really needs comparing is the service fees for swapping in and out, and how much more convenient it is to use the asset directly as margin instead of redeeming from flexible savings each time you need the funds. Rates change every hour, and this table does not represent future returns.

On the same day, OKX’s official lending rate API showed a USDT lending APR of 2.69% for the most recent hour; Auto Earn+ uses the same lending market. I am an OKX VIP 1 myself and turned on Auto Earn+ for USDT in August 2026; I describe how it went in “OKX Review”. For today’s tiered flexible rates at each exchange, see the USDT earn rate comparison.

Risks: redemption, collateral discounts, liquidation and exchange credit

No “depeg” price; the risk is in redemption

BFUSD, LDUSDT, BYUSDT and BGUSD cannot be withdrawn and have no external market to sell on, so they will not trade below US$1 the way USDT or USDC can (for the record of stablecoin depegs, see “USDT vs USDC”). Swapping back 1:1 for USDT depends on the exchange’s redemption commitment, so the risk becomes whether you can swap, and when the swap goes through:

• Binance says BFUSD redemptions may be delayed by up to 7 days in extreme market conditions.
• Bitget’s terms state that it may suspend, delay or limit BGUSD redemptions, and that liquidating assets may take time or incur costs.
• Binance says each flexible product has a daily redemption quota that may change at any time; the flexible products guide does not say whether this quota also applies to LDUSDT.

Strategy risk: the yield may be 0 for a stretch

BFUSD’s yield relies on funding rates and staking, and the risks Binance lists include rewards of 0 when funding rates are negative. The exchanges set the APRs of BGUSD and USDG at their discretion and can lower or end them at any time. The APR on the page is not a guaranteed return.

Collateral discounts and liquidation

• Discounts shrink your margin: OKX counts USDG at 98%, and Bitget can apply a valuation discount to BGUSD and change it at any time. The same amount swapped into these assets may count for less margin than USDT.
• What happens at liquidation: Bybit says BYUSDT is swapped 1:1 for USDT with no service fee during liquidation settlement; the Binance BFUSD FAQ I checked does not cover what happens at liquidation.
• Unpaid rewards do not count: Bitget’s terms state that BGUSD rewards accrued but not yet paid do not count toward margin value.

My inference: these products tie “margin” and “earn” together. Once you change your account mode (for example, from Multi-Assets Mode back to single-asset mode, or to isolated margin), assets that counted as margin may stop counting. Before changing modes, check whether these assets will drop out of your margin.

Exchange credit risk

All of these assets sit on the exchange’s books, so they are exposed if the exchange itself runs into trouble. Binance’s BFUSD FAQ states that if Binance becomes insolvent or its operations fail, holders may be unable to redeem or receive rewards. Bitget’s terms state that holders are unsecured creditors if Bitget becomes insolvent, have no rights to the BGUSD pool, and that BGUSD is not registered with any government or regulator. For how much users got back when exchanges failed, see “Centralized Exchange Incident Timeline”; for how to check reserves, see “How to Check Proof of Reserves”.

If you already hold a margin balance: deciding whether to switch

This section applies only if you already keep USDT in a futures account as margin. If you do not trade futures and want to know where to keep idle USDT, go straight to “Where to Park Idle USD and USDT”.

1. Check whether your account mode accepts it: BYUSDT is not accepted in isolated margin, and BFUSD, LDUSDT and BGUSD need multi-asset mode. Changing your margin mode just to use these products means changing your existing risk settings, and I do not recommend it.
2. Work out the break-even period: use “round-trip fee ÷ APR × 365”. If you expect to hold for fewer days than that, do not switch.
3. Check the yield source: BFUSD is strategy income and can be 0; LDUSDT and BYUSDT pay flexible-savings interest without the rewards; BGUSD and USDG pay rewards the exchange sets itself.
4. Check the redemption terms: whether redemptions can be delayed by several days, whether there is a daily quota, and whether you may need to move the funds out at any time.
5. Check the exchange itself: these assets all sit on the exchange and are exposed if it runs into trouble. For each exchange’s safety and ratings, see “How to Choose a Crypto Exchange”.

For each exchange’s earn features and ratings, see “Binance Review”, “Bybit Review” and “Bitget Review”. More exchange guides and comparisons are on the crypto topic page.

FAQ

What is BFUSD? Is it a stablecoin?

BFUSD is a yield-bearing asset from Binance. It can be redeemed 1:1 for USD stablecoins, pays daily USDT rewards while you hold it, and can be used as collateral in futures and margin accounts. Binance says it is not an on-chain token and cannot be withdrawn to an external wallet, so swapping it back 1:1 for USDT depends on Binance's redemption commitment.

Where does BFUSD's yield come from?

According to Binance's official FAQ, the yield comes from using BFUSD funds for delta-neutral hedging between spot and futures to collect funding rates, plus staking income (ETH staking, for example). When funding rates turn negative, the APR can be 0 but never negative; losses are absorbed by a reserve fund.

How much less does BYUSDT earn than keeping USDT in Bybit's flexible savings?

BYUSDT earns only the flexible product's base APR, without the platform reward APR. Using Bybit's official API on 14 October 2026, flexible savings paid 6.94% on the first 100 USDT and 1.94% on the rest, so switching to BYUSDT earns at most about 5 USDT less a year. Swapping in and out may also carry a service fee.

Can BFUSD or BYUSDT be used in isolated margin?

BYUSDT counts as margin only in the cross margin and portfolio margin modes of Bybit's Unified Trading Account, not isolated margin. BFUSD has a collateral ratio close to 100% in Binance's Multi-Assets Mode, but cannot be used for coin-margined futures, grid trading or copy trading.

Can yield-bearing margin assets depeg?

BFUSD, LDUSDT, BYUSDT and BGUSD cannot be withdrawn and have no external market price, so the more realistic risk is redemption: Binance says BFUSD redemptions may be delayed by up to 7 days in extreme market conditions, and Bitget's terms state it may suspend, delay or limit BGUSD redemptions. If the exchange fails, Bitget's terms state that holders are unsecured creditors.

Does OKX have a product like BFUSD?

OKX does not issue an internal token, but it offers two alternatives. VIP 1 and above can turn on Auto Earn+, which lends the USDT in the trading account directly; OKX says this does not affect its use as margin. Holding USDG also earns rewards from OKX: the page checked on 14 October 2026 listed 3.5% for regular users and 4.1% for VIPs, and USDG counts at 98% when used as margin.