What is the fee rebate?
Every transaction (spot/contract) you make on Binance will incur a fee.
Why is it necessary to open a fee rebate? Many people don't even know where they are losing!
Everyone always thinks the fee is calculated based on the principal, so they feel that whether to open a rebate for a few hundred u or a few thousand u doesn't matter. But the real fee is never calculated based on your principal, but rather based on your 'leverage-adjusted position'!
Let's take the simplest example:
You have 1000u, with 100 times leverage, your position is 100,000u.
Attention!
The fee is not calculated based on 1000u, but based on 100,000u!
Moreover, opening a position once and closing it once means the fee is calculated at least twice.