Why the fee affects the target
Before rebalancing, bitcoin value is BTC quantity multiplied by price. Add cash to obtain total portfolio value. A buy or sell moves value between the two assets, while the trading fee reduces the combined total.
Simply trading the difference between the target and current BTC value can miss the final target because the denominator changes after fees. This model solves for the post-fee allocation instead.
Read the trade direction and remaining balances
A target above the current BTC weight normally requires a buy; a lower target requires a sell. The result should be interpreted with the cash and BTC balances remaining after the modeled trade.
The scenario assumes a single execution price and a proportional fee charged in quote currency. It does not include slippage, minimum order sizes, fee tokens or network transfer costs. Use the order-book tool if the trade is large relative to visible liquidity.
Rebalancing does not remove portfolio risk
A target percentage is an allocation decision supplied by you. The calculator does not estimate an optimal portfolio or account for taxes on disposals. Repeated small rebalances may generate costs without a meaningful change in risk. Compare the required trade with your intended tolerance band and the costs of carrying it out.
Questions about this tool
Can I use this for a portfolio with many tokens?
No. It solves only BTC plus quote-currency cash. A multi-asset portfolio needs additional constraints.
Does it place the trade?
No. It calculates the required trade from your assumptions and does not connect to an exchange.