Bitfinex fee calculation depends on the following factors:
● type of order (maker or taker);
● trading volume for the last 30 days;
● the number of UNUS SED LEO tokens (Bitfinex native token) on the trader's account;
● type of deposit funds (fiat or cryptocurrency);
● fees for margin funding;
● referral link.
We talked about the maker/taker system in detail in the review on Binance fees
Bitfinex's base spot market fee is 0.1% maker, 0.2% taker. Net maker and taker fees are shown in the table.