How to use it
In margin trading, the funds you borrow accrue interest over time. This tool uses the most direct formula: total interest = amount borrowed × daily rate% × days, then divides by days for the per-day figure. Binance actually accrues by the hour; this daily approximation is enough to feel the scale and the "the longer you hold, the more it costs" effect.
The daily rate defaults to 0.02% purely as an example value; the real rate floats with the coin and with market supply and demand, so check the current number on Binance's margin page and enter it back here. The spread between rates is wide — always go by the official page.
This tool is an estimate using simplified daily accrual; it doesn't model a possible minimum accrual period, compounding, or promo adjustments. Actual interest is whatever your Binance account shows (checked June 2026). FeeFlux is an independent third party, not Binance official; nothing here is investment advice, and margin trading is high-risk.
Related reading: How Binance margin interest is charged · What the funding rate is · Complete fee guide