Trading fees are paid to fund the Bisq DAO when making or taking an offer. Fees can be paid in BSQ or BTC.
Bisq encourages traders to use BSQ by offering a discount of approximately 50%, since BSQ fees help fund Bisq's development. This discount fluctuates as the BSQ/BTC rate fluctuates. To maintain the 50% discount target, trading fees are updated every cycle as necessary.
Total trading fees paid in BTC is 0.8%, 0.1 by maker and 0.7 by taker. Total trading fees paid in BSQ is ~0.4%, 0.05% for maker and 0.35% for taker.
Traders choose how they'd prefer to pay trading fees while making or taking an offer. BSQ and BTC amounts (and fiat equivalents) are shown.