ANTICIPATED INCOME DOCTRINE OF LIQUIDITY
An explanation of bank liquidity developed by Herbert Prochnow, in which the net cash flow of bank borrowers, rather than subsequent new borrowings, is seen as the true source of loan repayments. Accordingly, to the extent that loans are written with payment terms and maturities that reflect the borrower's cash flow stream, the cash flow to the bank from loan principal payments is the source of bank liquidity.
See commercial loan theory of liquidity and shiftability theory of liquidity. American Banker Glossary