Broker

A broker is a party that mediates between a buyer and a seller. A broker who also acts as a seller or as a buyer becomes a principal party to the deal. Distinguish agent: one who acts on behalf of a principal. A "brokerage" or a "brokerage firm" is a business that acts as a broker. A brokerage firm is a business that specializes in trading stocks. A sales person working for a securities or commodity brokerage firm is popularly (but incorrectly) called a "broker."

A broker in that context is, strictly speaking, an exchange member who is actually executing the purchase or sales order in the 'pit', on the exchange, as a service to the client of the firm for which that salesman works. Banks' activities can be divided into retail banking, dealing directly with individuals and small businesses; business banking, providing services to mid-market business; corporate banking, directed at large business entities; private banking, providing wealth management services to High Net Worth Individuals and families; and investment banking, relating to activities on the financial markets.

Most banks are profit-making, private enterprises. However, some are owned by government, or are non-profits. Central banks are normally government owned banks, often charged with quasi-regulatory responsibilities, e.g. supervising commercial banks, or controlling the cash interest rate. They generally provide liquidity to the banking system and act as Lender of last resort in event of a crisis.

The nature and scope of a mortgage broker's activities varies with jurisdiction. For example in the UK anyone offering mortgage brokerage is offering a regulated financial activity; the broker is responsible for ensuring the advice is appropriate for the borrowers' circumstances and is held financially liable if the advice is later shown to be defective. In other jurisdictions the transaction undertaken by the broker may be limited to a sales job: pointing the borrower in the direction of an appropriate lender, no advice given, and a commission collected for the sale.