Q.(A) Identify, which of the following is not a source of supply of foreign exchange for India. (Choose the correct alternative)

The Real Exchange Rate: What Your Rupee Actually Buys

Think about this. You walk into a shop in Delhi and see a pair of sneakers for ₹4,000. Your cousin in New York sends you a photo of the same sneakers — they cost $80 there. Which is cheaper? You can't just compare ₹4,000 and $80. You need to convert one into the other using the exchange rate.

If 1 US dollar = ₹83, then $80 = ₹6,640. So the sneakers in Delhi (₹4,000) are cheaper. That's the nominal comparison — just using the market exchange rate.

But what if you're not comparing sneakers? What if you're comparing an entire haircut in India (₹200) versus a haircut in the US ($30)? At ₹83 per dollar, that $30 haircut equals ₹2,490. The Indian haircut is far cheaper. But does that mean everything in India is cheaper? Not exactly. Some things — like imported electronics or petrol — might cost more in India than abroad.

This is where the real exchange rate comes in. It answers a deeper question: After adjusting for the general price level in each country, how many Indian goods can you get for the price of one foreign good?

The Precise Meaning

The real exchange rate (RER) compares the purchasing power of two currencies within their own economies. It tells you the rate at which you can trade the goods and services of one country for those of another.

Let's break this down with a concrete example.

Suppose India is the domestic country and the US is foreign. Let:

• $e = 83$ (₹83 per $1)
• $P_f = 100$ (a basket of US goods costs $100)
• $P_d = 100$ (the same basket of Indian goods costs ₹100)

Then:

$\text{RER} = \frac{83 \times 100}{100} = 83$ …

Let’s start with something you already know from everyday life.

Suppose you buy a phone from a shop in another country. You pay in dollars. The shopkeeper now has dollars, not rupees. If you are a country, and you buy more from the world than you sell to it, the world ends up holding your currency — or you end up paying them in foreign currency (like dollars). Either way, the country’s central bank (the RBI in India) has to step in to settle the difference. That stepping in is what Official Reserve Transactions are about.

The precise meaning

Official Reserve Transactions are the purchases or sales of foreign exchange (dollars, euros, gold, SDRs, etc.) by a country’s central bank to balance the Balance of Payments (BoP).

The BoP has two main accounts: the Current Account (trade in goods, services, and transfers) and the Capital Account (financial flows like loans, investments). These two accounts must always sum to zero — but in practice, they don’t automatically balance. The difference is covered by the central bank’s official reserve transactions.

Or equivalently:

What each symbol means:

• Current Account: net earnings from exports minus imports, plus net transfers.
• Capital Account: net inflow of foreign investment minus outflow.
• Official Reserve Transactions: the change in the central bank’s stock of foreign exchange reserves.

If the sum of current and capital accounts is positive (a surplus), the central bank buys foreign exchange (adds to reserves). If the sum is negative (a deficit), the central bank sells foreign exchange (draws down reserves).

Why it matters

Official reserve transactions are the shock absorber of the external sector. They prevent the rupee from crashing or soaring uncontrollably when there is a temporary mismatch between dollars coming in and going out.

Example: India runs a trade deficit (imports > exports). Foreign investors also pull money out. The combined deficit means more dollars are leaving than entering. Without intervention, the rupee would depreciate sharply. The RBI steps in, sells dollars from its reserves, and supplies the missing dollars — keeping the exchange rate stable.

A word-picture to hold in mind

Imagine a weighing scale. On the left pan: all foreign exchange coming into India (exports, foreign investment, remittances). On the right pan: all foreign exchange leaving India (imports, foreign loans repaid, dividends sent abroad). The scale rarely balances perfectly.

The central bank stands next to the scale with a bucket of foreign exchange. If the left pan is heavier (surplus), the central bank adds weight to the right pan by buying dollars — that’s an increase in reserves. If the right pan is heavier (deficit), the central bank removes weight from the right pan by selling dollars — that’s a decrease in reserves.

The bucket itself is the Official Reserve Assets — and every time the central bank dips into it or adds to it, that’s an Official Reserve Transaction.

A common confusion (and how to avoid it) …