As it was discovered, the money supply in India has been moderated by the Reserve Bank of India, the central bank. They employ a set of core monetary instruments in order to stabilize the economy, bring inflation and other factors into check, and foster growth.

1. Repo and Reverse Repo Rates: The RBI also changes the repurchasing rate at which banks can borrow from the RBI and the redeeming rate at which the RBI can borrow from the banks. Variation of these rates is employed by the RBI to control credit creation in the economy leading to impacted money availability in the economy.

2. Cash Reserve Ratio (CRR): CRR is the proportion of the deposit, which banks are required to maintain with the RBI. CRR uplifting makes the credit available for lending to be scarce and therefore constrict money supply, while its trimming, has the reverse effect.

3. Statutory Liquidity Ratio (SLR): Net demand and time liabilities are also specified as a minimum percentage to be reserved on approved securities. SLR change influences the banking liquidity and ability to approve loans.

4. Open Market Operations (OMOs): To control the money supply, RBI also buys or offers government securities on the market. The sale of securities absorb funds from the market, on the other hand, purchase returns funds into the market.

5. Market Stabilization Scheme (MSS): This tool was introduced to remove excess in the money supply; whereby its work is done through issuing government securities available for absorption of extra money.

Collectively, these tools help make a certain that RBI runs a steady economy in relations to inflation, currency value and availably of credit.