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December 13, 2017 

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SLOPE, SHORT-RUN AGGREGATE SUPPLY CURVE: The short-run aggregate supply (SRAS) curve has a positive slope, reflecting the direct relation between the price level and aggregate real production. A higher price level is related to more real production and a lower price level is related to less real production. The general reason is similar to that of market supply curves--the opportunity cost of production--three specific reasons can be identified: (1) inflexible resource prices that often makes it easier to reduce aggregate real production and resource employment when the price level falls; (2) the pool of natural unemployment, consisting of frictional and structural unemployment, that can be used temporarily to increase aggregate real production when the price level rises; and (3) imbalances in the purchasing power of resource prices that can temporarily entice resource owners to produce more or less aggregate real production than the would at full employment.

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LEGAL RESERVES:

The combination of vault cash and Federal Reserve deposits that banks can legally use to satisfy government reserve requirements. Legal reserves, which can also be considered total reserves, are divided between require reserves and excess reserves. Required reserves are used to back up deposits and process daily transactions, while excess reserves are then available for interest-paying loans.
While banks have a number of different assets that could, in principle, be used as reserves to back bank deposits, legal reserves are the only assets that are permitted by government regulations. The two asset categories that contain the legal reserves designation are vault cash and Federal Reserve deposits. Both of these assets are used to facilitate daily deposit transactions, such as "cashing" checks.

Fractional-Reserve Banking

The modern banking system relies on fractional-reserve banking. Banks keep a portion of deposits in reserve, usually less than five percent, to facilitate daily business transactions (cashing checks and the like). They then use the rest for loans or other interest-paying investments.

Fractional-reserve banking makes it possible for banks to pursue two activities simultaneously: (1) safely maintaining the liquidity of checkable deposits and a portion of the money supply and (2) acting as a financial intermediary to match up lenders (especially households depositing paychecks) and borrowers (especially businesses investing in capital goods).

The practice of fractional-reserve banking means that banks must balance the profitability of loans with the safekeeping of deposits. Tilting too far in the direction of loans jeopardizes the safety of deposits. Excessively emphasizing safekeeping limits profit. In either case, problems can emerge and banks can go out of business if a proper balance is not maintained.

Vault Cash

The first of two assets that can be legally used as reserves to back up deposits is vault cash. This is the paper bills and metal coins that is kept in the bank, that is, in the vault. Actually, this includes any paper bills and metal coins kept on the bank premises, both the vault and teller drawers.

The most important function of vault cash is, quite literally, to "cash" checks and otherwise to satisfy currency withdrawal demands of depositors. Even as the economy relies more on paper checks, debit cards, and electronic transfers, currency (paper bills and metal coins) continues to represent an essential medium of exchange. As such, the public is inclined to transfer wealth between bank deposits and currency. Banks must stand ready to complete this transfer with stockpiles of paper bills and metal coins.

Note that vault cash is not part of the official M1 money supply. M1 includes only the paper bills and metal coins that is in circulation and held by the nonbank public. Vault cash is paper bills and metal coins that is held by banks and thus it is not in circulation.

Federal Reserve Deposits

The second of two assets that can be legally used as reserves to back deposits is Federal Reserve deposits. These are deposits that banks keep with the Federal Reserve System, in particular, the 12 Federal Reserve District Banks and the 25 Federal Reserve Branch Banks.

These 37 Federal Reserve Banks provide a number of banking services to commercial banks, including loans and deposits. If the public seeks loans or deposits, they can go to a commercial bank. If a commercial bank seeks loans or deposits they can go to a Federal Reserve Bank.

Federal Reserve deposits play at least two key roles in the banking system.

  • First, commercial banks are legally required to keep a deposits with the Federal Reserve Banks to join the system. These deposits are effectively the price of admission, the dues that commercial banks pay to be a full-fledged member.

  • Second, Federal Reserve deposits are essentially the medium of exchange used internally within the banking system. When banks make payments among each another or with Federal Reserve Banks, they do so using Federal Reserve deposits. The most important payment made between banks results when checks are processed. The process of "clearing" checks invariably requires the transfer of reserves between banks, which is accomplished using Federal Reserve deposits.

Required and Excess

Legal reserves are commonly divided between required reserves and excess reserves.
  • Required Reserves: Required reserves are the amount of reserves--vault cash and Federal Reserve deposits--that regulators require banks to keep for daily transactions. Required reserves are specified as a fraction of outstanding deposits--usually about 1 to 3 percent.

  • Excess Reserves: Any legal (or total) reserves over and above those required by regulators are excess reserves. These excess reserves are used for loans, which makes them exceedingly important to the banking industry. Because reserves, unlike loans, do not generate interest, add to revenue, or enhance profit, banks are prone to hold as few reserves as possible. Banks hold enough reserves to satisfy reserve requirements, because they are required by law. But they try NOT to hold excess reserves. Holding excess reserves means lost interest revenue.

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Recommended Citation:

LEGAL RESERVES, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2017. [Accessed: December 13, 2017].


Check Out These Related Terms...

     | bank reserves | required reserves | excess reserves | fractional-reserve banking | full-reserve banking | no-reserve banking | vault cash | Federal Reserve deposits |


Or For A Little Background...

     | banks | banking | traditional banks | savings and loan associations | credit unions | mutual savings banks | thrift institutions | money | M1 | monetary economics | government functions | financial markets | liquidity |


And For Further Study...

     | money creation | Federal Reserve System | Federal Deposit Insurance Corporation | Comptroller of the Currency | central bank | monetary policy | bank panic | monetary aggregates | barter |


Related Websites (Will Open in New Window)...

     | Federal Reserve System | Federal Deposit Insurance Corporation |


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