Understanding RBI's Money Supply Measures: M3

The Reserve Bank of India (RBI) uses different measures to track the total amount of money circulating in the economy. These are known as money supply measures. RBI currently publishes data for four alternative measures of money supply, denoted as M1, M2, M3, and M4.

Let's break down what each measure includes:

• M1: This is the most liquid measure. It includes currency held by the public (CU), demand deposits with commercial banks (DD), and 'other' deposits with the RBI (ODD).
  Mathematically, $\text{M1} = \text{CU} + \text{DD} + \text{ODD}$.
• M2: This measure is M1 plus saving deposits held with post office savings banks.
  Mathematically, $\text{M2} = \text{M1} + \text{Saving deposits with post office savings banks}$.
• M3: This is a broader measure of money supply. It includes M1 plus the net time deposits of commercial banks. Time deposits are deposits that have a fixed maturity period, like Fixed Deposits (FDs) and Recurring Deposits (RDs). 'Net' time deposits exclude inter-bank deposits.
  Mathematically, $\text{M3} = \text{M1} + \text{Net time deposits of commercial banks}$.
• M4: This is the broadest measure. It includes M3 plus total deposits with post office savings organisations (excluding National Savings Certificates).
  Mathematically, $\text{M4} = \text{M3} + \text{Total deposits with post office savings organisations (excluding NSC)}$.

Based on these definitions, let's look at the given options regarding M3:

1. CU + DD: This represents a significant part of M1, but not M3.
2. M1 + Saving deposits with post office savings banks: This is the definition of M2, not M3.
3. M1 + Net time deposits of commercial banks: This precisely matches the definition of M3 as per RBI.
4. M1 + Total deposits with post office savings organisations: This is related to M4, not M3.

Therefore, the correct definition for M3 according to RBI is M1 plus Net time deposits of commercial banks.

Here is a summary in a table format:

M1 and M2 are considered narrow money, while M3 and M4 are considered broad money. M3 is the most commonly used measure for analyzing money supply by RBI.