MPs are in a powerful position to influence high-level decision-making. There may be times when their personal or business interests conflict with their role as elected officials representing the public interest.

A committee of both Houses of Parliament develops standards of ethical behaviour for MPs and administers a code of conduct.

MPs are expected to register in Parliament their financial interests and those of their spouses, dependants and permanent companions every year. Most of this information is open to the public. The confidential part of the register includes details about the monetary value of MPs' interests and all details about spouses, dependent children and permanent companions of MPs.