Queen Camilla will be sworn in as a member of the King's Privy Council for Canada during the royal couple's impending trip to the country.
According to top government officials, the swearing-in permits the Queen to provide formal counsel to King Charles in his capacity as King of Canada, and once sworn in, she retains lifetime membership.
King Charles will attend Canada's official opening of parliament in Ottawa, demonstrating his unwavering support for the former British colony, of which he remains head of state.
According to Buckingham Palace, Charles and his wife Queen Camilla will visit Canada from May 26 to 27.
The monarch's visit follows his recent admission that he is also the king of Canada, a country that U.S. President Donald Trump has expressed an interest in.
Charles' travel to Canada would be his second abroad trip this year, following his visit to Italy, where he met privately with Pope Francis prior to the pontiff's death.
When King Charles III and Queen Camilla visit Canada later this month for the monarch's reading of the speech from the throne, two days of pomp and ceremony will begin in the capital.
The King's visit will be the third time a British and Canadian monarch has read the speech from the throne in Canada, following Queen Elizabeth's speeches in 1957 and 1977.