Repo rate also known as the benchmark interest rate is the rate at which the RBI lends money to the banks for a short term. When the repo rate increases, borrowing from RBI becomes more expensive. If RBI wants to make it more expensive for the banks to borrow money, it increases the repo rate similarly, if it wants to make it cheaper for banks to borrow money it reduces the repo rate. Current repo rate is 5.15%
Reverse Repo rate is the short term borrowing rate at which RBI borrows money from banks. The Reserve bank uses this tool when it feels there is too much money floating in the banking system. An increase in the reverse repo rate means that the banks will get a higher rate of interest from RBI. As a result, banks prefer to lend their money to RBI which is always safe instead of lending it others (people, companies etc) which is always risky.