RBI’s liquidity mop-up is more than just a cash drain

The Reserve Bank of India has spent months putting liquidity into the banking system. It is now having to take some of it back.The decision to sell Rs 1 lakh crore of government securities through open market operations is therefore more than a routine liquidity-management exercise.

It is an acknowledgement that the banking system has accumulated more cash than the RBI is comfortable with.The immediate trigger is the sharp increase in liquidity following the inflow of foreign currency under the FCNR(B) deposit mobilisation scheme.

The resulting rupee liquidity has pushed overnight rates below the repo rate, weakening the transmission of the RBI’s policy signal.That is the problem the central bank is trying to fix.When overnight money is available significantly below the repo rate, the repo rate stops being an effective anchor for short-term rates. Banks have little incentive to borrow from the RBI when they are already sitting on surplus funds.

The monetary policy transmission mechanism, consequently, becomes distorted.The RBI’s earlier attempts to absorb the surplus through variable-rate reverse repo auctions and foreign-exchange swaps have not been sufficient. OMO sales are a more direct way of removing durable liquidity from the system.But there is no free lunch.

When the RBI sells government securities, banks and other investors have to find the money to buy them. That can put upward pressure on bond yields. For the government, which has to borrow heavily from the market, higher yields can eventually translate into a higher cost of borrowing.This is where the RBI has to tread carefully.

The liquidity surplus is not necessarily bad for the economy. Banks having money to lend can support credit growth and economic activity. The problem arises when excess liquidity becomes so large that money-market rates lose their relationship with the policy rate.The RBI, therefore, is not necessarily turning hawkish.

It is trying to restore control over the transmission mechanism without changing the broader monetary-policy stance.The interesting part will be what happens next. If foreign inflows continue and liquidity keeps accumulating, the Rs 1 lakh crore OMO sale may prove to be only the first step.

If the surplus recedes, the RBI may not need to do much more.For now, the message is clear: the RBI is willing to tolerate abundant liquidity, but not liquidity that makes the repo rate irrelevant.That distinction matters. The central bank is not necessarily taking away the punch from the banking system. It is trying to ensure that the punch it delivers through monetary policy actually lands where it is supposed to.