Repo and reverse repo are tools used by the Reserve Bank of India to control money supply and liquidity in the country. In a repo transaction, banks borrow funds from RBI by selling government securities with an agreement to buy them back later. The reverse repo is the opposite, with RBI borrowing from banks. Repo rate is currently 7.25% while reverse repo is 1% lower at 6.25% to prevent risk-free arbitrage opportunities for banks. RBI uses adjustments to these rates to influence whether liquidity and money supply increases or decreases in order to control inflation.