Obligations under the Online News Act will come into effect no later than 180 days after June 22, 2023, the day Bill C-18 received Royal Assent. When elements of the Act come into effect will depend on regulations from the Governor in Council (GIC), and the implementation of processes by the Canadian Radio-television and Telecommunications Commission (CRTC).
When does bill c-18 come into effect?
https://www.canada.ca/en/canadian-heritage/news/2023/07/the-online-news-act-next-steps.html