Float is money that's left one account but hasn't arrived at the next, clearing checks, T+1 card settlements, ACH in transit, inbound wires being verified. From your books, float sits as IN-TRANSIT assets: not yet usable but contractually yours. Smart treasury teams MINIMISE outbound float (get money out of your accounts as late as possible while still meeting commitments) and MAXIMISE inbound float (get money INTO usable accounts as fast as possible). This lesson posts an inbound batch of card settlements and shows how same-day-vs-next-day settlement timing changes when interest income starts.