"A cash flow is a real or virtual movement of money:
a cash flow in its narrow sense is a payment (in a currency), especially from one central bank account to another; the term ´cash flow´ is mostly used to describe payments that are expected to happen in the future, are thus uncertain and therefore need to be forecast with cash flows;
a cash flow is determined by its time t, nominal amount N, currency CCY and account A; symbolically CF = CF(t,N,CCY,A).
it is however popular to use cash flow in a less specified sense describing (symbolic) payments into or out of a business, project, or financial product." - (en.wikipedia.org 16.07.2022)
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