The Estonian Reform Party is a liberal political party in Estonia that was founded on 18 November 1994 by Siim Kallas, the President of the Bank of Estonia. The party became the second largest party in the country after the 1995 parliamentary election, and it formed a coalition government with the Pro Patria Union and the Social Democratic Party of Estonia in 1999. The Reform Party participated in most coalition governments since the mid-1990s, and it played a key role in Estonia's free market and low taxes policies.