What does FB mean in Banking?

Foot the bill

The idiom foot the bill means: 1. to pay all the costs for something The Free Dictionary 2. to pay money owed; to pay for something The Free Dictionary 3. pay the bill, settle the accounts, as in The bride's father was resigned to footing the bill for the wedding. This expression uses foot in the sense of "add up and put the total at the foot, or bottom, of an account." [Colloquial; early 19th century] Answers Regarding its provenience and current usage, according to Michael Quinion on his World Wide Words website: It comes from the mildly figurative sense of foot that refers to the end or bottom of something, such as the foot of a ladder...our sense refers in particular to the totting up of a column of figures, especially in an account ledger, and adding the result to the bottom of the column. It often now has the implication of paying for something whose cost is considered large or unreasonable, especially if the person doing so has been forced into paying for the consequences of the actions of somebody else. This modern-day usage is often how it is found in many articles and other current works, although many continue to use it with its more broad definition of simply to pay the costs or money owed for something, holding true its accounting origins.

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