Ontario Finance | Ontario Finances | 21,246 followers on LinkedIn. Ontario Ministry of Finance | Ministère des Finances de l'Ontario | Ontario Ministry of Finance | Ministère des Finances de l'Ontario The Ontario Ministry of Finance performs a variety of roles focused on supporting a strong economic, fiscal and investment climate for Ontario, while ensuring accountability with respect to the use of public funds. The ministry provides key fiscal, taxation and economic policy advice and support to the Minister of Finance, Cabinet and the Premier; reports on the province's economic and fiscal plans to the public; and prepares the provincial budget and a mid-year fiscal and economic update. The ministry also oversees several major operating agencies that generate revenues to support provincial programs and in certain cases, provide direct services to Ontarians.