You might be charged by your Bank monthly fees or they might take a fee when you make certain transactions, these fees should be allocated here.
Bank charges on incoming or outgoing transactions.
Bank fees that are charged to you on foreign transactions.
Monthly Bank maintenance fees
What's not included
Interest on loans or overdrafts should be recorded in the Interest Paid category.
Gains or losses on foreign currency transactions should be recorded in the Exchange Rate Variance category.
How is it taxed?
The amount is deducted from your pre-tax profits as is.
Nothing too tricky about this one, just categorise those bank fees that hit the account.