The International Monetary Fund has called for the currency peg to be 'more flexible'.
The central bank lost more than a quarter of its forex reserves in sterilized interventions since July 2011.
Sri Lanka rupee has come under pressure from strong credit growth and liquidity injected by the Central Bank to sterilize interventions in forex markets.
Ending sterilized interventions will remove a key downward pressure on the currency.
Dealers said some importers held back, after the rupee slid and the market is yet to come into full equilibrium.
The central bank removed its intervention band Thursday after re-pegging the currency at increasingly lower levels over three working days.
Central Bank governor Nivard Cabraal said the monetary authority would not intervene to keep a specific price but would continue to supply dollars to meet oil import bills from time to time.