What are "Current Fee" and "Next Fee"?

Your trade fee depends on the currency pair you're trading and it's reduced according to the volume you've traded over the past 30 days. "Current Fee" and "Next Fee" (in the upper right corner of the "Trade" tab on your account screen) indicate your fee status relative to your trading volume. "Current Fee" indicates the fee you are currently being charged, and "Next Fee" shows the level your trading fee will drop to if you trade enough volume. The bar in between these two fees indicates how much more volume is needed to drop to the next fee level.