Blockchain Board of Derivatives (BBOD) uses a maker-taker fee model for determining its trading fees. The "Taker" side of the trade pays a fee, while the "Maker" receives a rebate.


Taker Orders: When placing an order that matches immediately against an order already on the order book, you will pay the taker fee as you are removing liquidity. 


Taker fees start at 0.145% and can go as low as 0.075% depending on the pair traded.


Maker Orders: When placing an order that is not matched immediately and sits on the order book, you will receive a rebate known as the maker fee as you are adding liquidity.


Maker fees start at -0.025% and can go as low as -0.045% depending on the pair traded.