A minister of finance (also called financial affairs, the treasury, the economy, or economic affairs) has many different jobs in a government. He or she helps form the budget, stimulate the economy, or helps control finances. Finance ministers are often found in state or provincial governments if that country has a form of federalism.
Finance ministers powers can vary from governments, but not like a foreign minister. Sometimes the finance minister is the most powerful cabinet post, like in Canada or New Zealand. Other times they are unpopular posts if they must raise taxes or cut spending.
Belgian Ministry of Finance (Administration of the Treasury) - Responsible for all revenues and expenditure of the Federal Government including the public debt, salaries of State employees.
Bulgarian Ministry of Finance - Writes and monitors the implementation of the annual state budget, and implements the Government policy targeting at stability of state finance and the national currency.
Thailand - Ministry of Finance - Administers the national finance in the collection of revenues, the management of the Crown Property and disbursement of royal fund.