The International Monetary Fund has called Bolivia's shift to a flexible exchange rate after 15 years of pegging its boliviano currency to the dollar an "important step" and said it remains committed to supporting the country's economic repair plans.

The IMF recommended ditching the dollar peg last year, and economists view the move as one of the key requirements for centrist President Rodrigo Paz's government to secure a $2.5- $3 billion support programme from the Fund.