How are Canadian senators appointed?

Canadian senators are appointed by the Governor General on the advice of the Prime Minister. The constitutional appointment authority is set out in section 24 of the Constitution Act, 1867. Senators serve until age 75 (the mandatory retirement age added in 1965; before then senators were appointed for life). Senators must be at least 30 years old, own property worth at least $4,000 in the province they represent, and meet residency requirements.

Since 2016, Senate appointments have followed a non-partisan process established by Prime Minister Justin Trudeau. The Independent Advisory Board for Senate Appointments, chaired by a former federal government official, reviews applications from Canadians who wish to be considered for Senate appointment. The Board's mandate is to recommend candidates with non-partisan, demonstrated record of public service, knowledge of Canadian institutions, and ethical conduct. The Board provides a list of three to five recommended candidates for each vacancy, from which the Prime Minister chooses.

The 2016 reform was a significant departure from the previous system, in which Prime Ministers typically appointed senators based on political loyalty, party service, or fundraising. Under the previous system, Prime Minister Stephen Harper appointed 59 senators during his tenure (2006 to 2015), most of whom were Conservative loyalists. Prime Minister Justin Trudeau appointed 80 senators between 2016 and 2025 under the new process, all of whom were directed to sit as independents. Prime Minister Mark Carney has continued the new process since taking office in March 2025.

The current Senate composition reflects this transformation. As of 2025, the Senate consists of about 38 Independent Senators Group members, 15 Conservative caucus members, 14 Progressive Senate Group members, 12 Canadian Senators Group members, plus a small number of non-affiliated senators and vacancies. The Reference re Senate Reform decision of the Supreme Court of Canada (April 25, 2014) ruled that constitutional changes to Senate selection (such as consultative elections or term limits) require constitutional amendment. The 2016 process changes are non-constitutional reforms that operate within existing constitutional structure, similar to the Independent Judicial Advisory Committee process for judicial appointments.