A business broker is a person or firm who/which acts as an intermediary between sellers and buyers of small businesses.

Business brokers, also called business transfer agents, or intermediaries, assist buyers and sellers of privately held small business in the buying and selling process. They typically estimate the value of the business; advertise it for sale with or without disclosing its identity; handle the initial potential buyer interviews, discussions, and negotiations with prospective buyers; facilitate the progress of the due diligence investigation and generally assist with the business sale.

Agency relationships in business ownership transactions involve the representation by a business broker (on behalf of a brokerage company) of the selling principal, whether that person is a buyer or a seller. The principal broker (and his/her agents) then become the agent/s of the principal, who is the broker’s client. The other party in the transaction, who does not have an agency relationship with the broker, is the broker's customer.

Agency relationships with clients and customers

Traditionally, the broker provides a conventional full-service, commission-based brokerage relationship under a signed agreement with a seller or "buyer representation" agreement with a buyer. In most states this creates, under common law, an agency relationship with fiduciary obligations. Some states also have statutes which define and control the nature of the representation and have specific business broker licensing requirements.

Agency relationships in business ownership transactions involve the representation by a business broker (on behalf of a brokerage company) of the selling principal, whether that person is a buyer or a seller. The principal broker (and his/her agents) then become the agent/s of the principal, who is the broker’s client. The other party in the transaction, who does not have an agency relationship with the broker, is the broker's customer.