Macroeconomics

‭E. Banks and Creation of Money‬ ‭Basic Accounting Principles‬ ‭Like‬‭any‬‭other‬‭business,‬‭banks‬‭need‬‭to‬‭keep‬‭track‬‭of‬‭what‬‭they‬‭own‬‭and‬‭what‬‭they‬‭owe.‬‭To‬‭understand‬ ‭how they do that, one should learn some basic principles of accounting.‬ ‭In‬ ‭accounting,‬ ‭assets‬ ‭represent‬ ‭anything‬ ‭of‬ ‭value‬ ‭that‬ ‭a‬ ‭frm‬ ‭owns‬ ‭.‬ ‭For‬ ‭a‬ ‭bank,‬ ‭assets‬ ‭include‬ ‭real‬ ‭assets‬ ‭such‬‭as‬‭buildings,‬‭furniture,‬‭etc.,‬‭in‬‭addition‬‭to‬‭the‬ ‭money‬‭and‬‭fnancial‬‭assets‬ ‭they‬‭own‬‭such‬‭as‬ ‭cash‬ ‭in‬ ‭vaults,‬ ‭bonds,‬ ‭stocks,‬ ‭and‬ ‭loans‬ ‭.‬ ‭A‬ ‭bank‬ ‭records‬ ‭a‬ ‭loan‬ ‭as‬ ‭an‬ ‭asset‬ ‭because‬ ‭the‬ ‭borrower‬ ‭promises‬ ‭to‬ ‭repay‬ ‭a‬ ‭certain‬ ‭sum‬ ‭of‬ ‭money‬ ‭on‬ ‭a‬ ‭certain‬ ‭date.‬ ‭This‬ ‭promise‬ ‭is‬‭worth‬‭something‬‭to‬‭the‬ ‭bank.‬ ‭Other‬ ‭bank‬ ‭assets‬ ‭include‬ ‭deposits‬ ‭at‬ ‭the‬ ‭Fed‬ ‭(central‬ ‭bank),‬ ‭called‬ ‭reserves.‬ ‭These‬ ‭are‬ ‭portions of the bank’s deposits kept at the Fed for reasons that will be discussed soon.‬ ‭Liabilities‬ ‭,‬‭on‬‭the‬‭other‬‭hand,‬‭represent‬‭a‬‭frm’s‬‭debts,‬‭or‬ ‭what‬‭it‬‭owes‬‭to‬‭others‬ ‭.‬ ‭For‬‭a‬‭bank,‬‭liabilities‬ ‭include‬‭deposits‬‭and‬‭savings‬‭accounts‬ ‭because‬‭they‬‭are‬‭promises‬‭to‬‭pay‬‭money‬‭that‬‭customers‬‭kept‬ ‭with‬‭it.‬‭When‬‭people‬‭make‬‭deposits‬‭in‬‭a‬‭bank,‬‭they‬‭are‬‭basically‬‭making‬‭a‬‭loan‬‭to‬‭the‬‭bank,‬‭so‬‭the‬‭bank‬ ‭owes them that amount.‬ ‭The‬‭basic‬‭rule‬‭of‬‭accounting‬‭states‬‭that‬‭if‬‭we‬‭add‬‭up‬‭a‬‭frm’s‬‭assets‬‭and‬‭then‬‭subtract‬‭its‬‭liabilities‬‭(the‬ ‭total‬‭amount‬‭it‬‭owes‬‭to‬‭everyone‬‭who‬‭has‬‭lent‬‭it‬‭funds),‬‭the‬‭difference‬‭is‬‭the‬‭frm’s‬‭net‬‭worth.‬ ‭Net‬‭worth‬ ‭represents‬‭the‬‭value‬‭of‬‭the‬‭frm‬‭to‬‭its‬‭owners‬‭or‬‭stockholders.‬ ‭For‬‭instance,‬‭a‬‭bank‬‭that‬‭owns‬‭$50‬‭million‬ ‭in assets and owes $20 million in liabilities is worth $30 million.‬

‭Assets‬ ‭−‬ ‭liabilities = net worth‬

‭Therefore, we can also deduce that:‬

‭Assets = liabilities + net worth‬

‭A‬ ‭T-account‬ ‭is‬ ‭used‬ ‭to‬ ‭illustrate‬ ‭a‬ ‭bank’s‬ ‭fnancial‬ ‭position‬ ‭.‬ ‭It‬ ‭is‬ ‭a‬ ‭simple‬ ‭balance‬ ‭sheet,‬ ‭which,‬ ‭by‬ ‭convention, lists the bank’s assets on the left side and its liabilities and net worth on the right side.‬ ‭By‬‭defnition,‬‭the‬‭balance‬‭sheet‬‭or‬‭T-account‬‭always‬‭balances,‬‭meaning‬‭that‬‭the‬‭sum‬‭of‬‭the‬‭items‬‭on‬‭the‬ ‭left side (assets) is equal to the sum of the items on the right side (liabilities + net worth).‬ ‭In‬ ‭the‬ ‭example‬ ‭below,‬ ‭the‬ ‭bank‬ ‭has‬ ‭$90‬ ‭million‬ ‭in‬ ‭assets,‬ ‭of‬ ‭which‬ ‭$10‬ ‭million‬ ‭are‬ ‭reserves‬ ‭(the‬ ‭deposits‬‭the‬‭bank‬‭has‬‭made‬‭at‬‭the‬‭Fed‬‭and‬‭its‬‭cash‬‭on‬‭hand),‬‭and‬‭$80‬‭million‬‭are‬‭loans.‬‭On‬‭the‬‭liabilities‬ ‭side,‬ ‭the‬ ‭bank‬ ‭owes‬ ‭$60‬ ‭million‬ ‭in‬ ‭deposits,‬ ‭which‬ ‭means‬ ‭that‬ ‭it‬‭has‬‭a‬‭net‬‭worth‬‭of‬‭$30‬‭million‬‭($90‬ ‭million‬ ‭−‬ ‭$60 million).‬

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