Bitfinex funding rates and the Flash Return Rate (FRR), explained.
Bitfinex funding rates are the interest rates lenders earn for providing margin funding to traders. The Flash Return Rate (FRR) is the hourly weighted-average of those rates, a free market baseline you can lend against. This guide covers how the FRR works, Auto-Renew and FRR Delta, the minimum offer size, and how daily rates turn into APR.
This is an educational page with no live rate feed. For current modeled APR by strategy, use the APR calculator.
How the Bitfinex USD funding rate works: the deepest, most liquid funding book, FRR dynamics, what drives the USD lending rate, and how to read it. Educational guide, not a live feed.
How the Bitfinex USDT (Tether) lending rate works: stablecoin funding dynamics, why USDT demand is often strong and stable, how it differs from USD, and how to read the USDT funding book.
How the Bitfinex BTC funding rate works: crypto-denominated lending with lower base rates that spike when shorting demand rises, volatility, and why it differs from stablecoin lending.
You lend from your funding wallet to margin traders who borrow it. You earn interest; your principal stays in your own Bitfinex account.
The hourly weighted-average rate of recently active fixed-rate fundings. It is a market baseline, not a guaranteed or best-available rate.
Re-offers returned funds automatically so capital does not sit idle. It follows one rule and does not scan the book.
Offer at FRR plus or minus a fixed offset. A small variable-rate adjustment on top of the FRR baseline.
What is Bitfinex margin funding?
Margin funding is peer-to-peer lending inside Bitfinex. You place an offer to lend an asset such as USD or USDT from your funding wallet, and margin traders borrow it to open leveraged positions. While the funds are lent, you earn interest at the agreed rate; when the loan is returned, the principal comes back to your wallet. Your capital never leaves your own Bitfinex account, which is why margin funding is non-custodial by design. Loans can also be returned early, so you should not assume every offer runs its full term.
What is the Flash Return Rate (FRR)?
The Flash Return Rate (FRR) is the hourly weighted-average rate of recently active fixed-rate fundings on Bitfinex. It is recalculated roughly every hour, so it reflects where the market has recently cleared rather than the exact rate available this second. Because it is an average, the FRR smooths out short spikes: it lags fast upward moves during volatility and lags downward when demand cools. That makes it a useful, stable baseline, not the single best fillable rate at any instant.
Lenders can offer at the FRR directly so their funds always track the market average, or use it as a reference point and offer slightly above or below it.
Auto-Renew and FRR Delta
Auto-Renew automatically re-offers funds once a loan is returned, so your capital does not sit idle between loans. FRR Delta lets you offer at the FRR plus or minus a fixed offset, a light variable-rate adjustment around the baseline. A variable-rate (FRR) offer floats with the hourly average; a fixed-rate offer locks a number you choose.
These tools are free and genuinely keep capital lent. Their limit is that each follows one rule and does not scan the book for the best fillable rate.
The ~$150 minimum per offer
Each funding offer generally needs to be worth at least the equivalent of about $150. Below that, an offer cannot be placed. Above it, a larger balance can either go out as one offer or be split into several offers at different rates and terms.
Splitting matters because the funding book has depth: filling a large balance at a single high rate may leave part of it unlent, while laddering rates can fill more of it.
Daily rate vs annualized APR
Bitfinex displays a daily rate. To get a rough annual figure, multiply by 365: APR ≈ daily rate × 365, before fees. A 0.03% daily rate is therefore about 10.95% gross APR. Two adjustments matter for the number you actually keep: Bitfinex charges a fee on interest earned (about 15% on FRR-rate offers, higher on fixed-rate, per its fee schedule), and re-lending returned interest compounds, which lifts effective yield above the simple multiply-by-365 figure over time.
How to read the Bitfinex funding book
The funding book lists open offers and demand at each rate and term. Lower-rate offers fill first because borrowers take the cheapest funding available, so an offer priced above the current clearing level may wait, while one priced too low fills instantly but leaves yield on the table. Reading the book means finding the rate where your size is likely to fill soon without giving up return. The FRR tells you the recent average; the book tells you what is fillable right now. To see how different strategies translate book conditions into modeled returns, open the APR calculator.
FRR vs a strategy bot
The FRR is a free hourly baseline that keeps capital lent. A strategy bot adds optimization and reporting on top, it does not replace Bitfinex's native tools. Here is how the two compare.
Stratum strategy returns are backtested and modeled, not a live track record. Real out-of-sample results have been around 8.5–10% APR and are regime-bound near the prevailing market rate; rates move and returns are never guaranteed. Compare the eleven backtested algorithms on the strategies page or read how it works.
Bitfinex funding rate FAQ
What is the Flash Return Rate (FRR) on Bitfinex?
The Flash Return Rate (FRR) is the hourly weighted-average rate of recently active fixed-rate fundings on Bitfinex. It updates each hour and acts as a free market baseline lenders can offer at, either directly or with an FRR Delta offset.
What is a good Bitfinex funding rate?
There is no single good rate. Funding rates float with borrower demand and can swing from under 5% to well above 20% APR during volatility, then revert. A useful benchmark is whether your rate keeps pace with or beats the FRR while staying filled.
Is FRR the best rate I can get?
Not necessarily. FRR is an hourly average, so it lags fast moves and is not the best fillable rate at any instant. Offering slightly above or below FRR, or repricing against the live funding book, can fill at different rates. FRR is a convenient baseline, not a guaranteed optimum.
How is the Bitfinex daily rate converted to APR?
Bitfinex shows a daily rate. A rough annualized figure is APR ≈ daily rate × 365, before fees. For example, a 0.03% daily rate is about 10.95% gross APR. Bitfinex then takes a fee on interest earned — about 15% on FRR-rate offers, higher on fixed-rate, per its fee schedule — so net APR is lower.
What is the minimum to lend on Bitfinex?
Each funding offer generally needs to be at least the equivalent of about $150. Balances above that can be placed as one offer or split into several offers across rates and terms.
What is the difference between Auto-Renew and FRR Delta?
Auto-Renew automatically re-offers funds that have been returned so capital stays lent. FRR Delta lets you offer at the FRR plus or minus a fixed offset. They are complementary: one keeps funds working, the other sets the rate relative to FRR.
How are Bitfinex funding earnings taxed?
Funding interest is generally treated as income, but rules vary by country and this is not tax advice. Stratum produces ledger-reconciled earnings reports and tax exports (CSV, TurboTax TXF for US Schedule B, German Anlage KAP, and PDF) to make filing easier.
Do I need a bot to lend on Bitfinex?
No. Bitfinex offers Auto-Renew, FRR, and FRR Delta for free, and they genuinely keep capital lent. A strategy bot adds optional book-aware repricing, maturity ladders, balance splitting, and reporting on top of those native tools.
See funding rates turned into modeled returns
Use the calculator to compare modeled APR by strategy, then automate offers, ladder maturities, and keep ledger-reconciled, tax-ready reports with a flat $9–$99/mo subscription, no cut of your earnings.