Social liberalism is a political philosophy and variety of liberalism that endorses social justice, social services, a mixed economy, and the expansion of civil and political rights, as opposed to classical liberalism which supports unregulated laissez-faire capitalism with very few government services.

Classical liberalism is a political tradition and a branch of liberalism that advocates free market and laissez-faire economics and civil liberties under the rule of law, with special emphasis on individual autonomy, limited government, economic freedom, political freedom and freedom of speech. Classical liberalism, contrary to liberal branches like social liberalism, looks more negatively on social policies, taxation and the state involvement in the lives of individuals, and it advocates deregulation.