The rupee strengthened to its highest in two years amid heavy selling of dollars by foreign banks.
The rupee rose to as much as 63.7575 per dollar, its strongest level since Aug. 10, 2015, from its close of 64.0750 on Tuesday. Traders estimated foreign banks had sold around $1 billion worth of dollars.
The gain in the partially convertible currency was magnified as the Reserve Bank of India refrained from its usual intervention, traders added.
The RBI had cut the repo rate by 25 basis points to a more than 6-1/2 year low after a recent slump in inflation, with markets primarily focused on whether the central bank signals readiness to ease more.