E5 ELI5.Lab Visual explainers
01 / ELI5 LAB FIELD NOTE ACTIVE MECHANISM
01QUESTION 02MECHANISM 03INTUITION
Visual explainer · X Article by Ajay Rotti

Who actually owes whom?

FCNR(B) deposits look like one giant national debt number. The article’s key idea is simpler: draw the contracts first, then assign each obligation to the right party.

Beginner levelBased on the author’s simplified exampleRead the original source
Dollar and rupee symbols with an FX swap arrow

1. The headline hides the wiring

A headline says “$127bn of FCNR(B) deposits.” That number alone does not tell you who borrowed, who holds the dollars, or who carries which risk.

$127bnheadline total unpack it bank’s deposit bank–RBI swap bank lending risk Different contracts→ different parties→ different risks

2. There are three parties

The author’s model separates the NRI depositor, the Indian bank, and the RBI. The arrows matter more than the labels.

NRI depositorbrings dollars Indian bankowes the deposit RBIswap counterparty $ deposit future $ repayment rupees today dollars later

The deposit and the FX swap are connected, but they are not the same contract.

3. What happens to $1,000?

Follow one deposit through time. The bank gets rupees to lend; the NRI still expects dollars back.

TodayNRI gives $1,000 Bank uses rupees₹95,000 enters lending Year 5$1,000 comes back swap at a rate agreed in advance

4. The exchange-rate twist

The swap rate is agreed today. The market rate five years later may be different. That difference changes the RBI’s result on the swap leg.

₹105

Dollar becomes more expensive

Agreed rate in the example: ₹96. Difference: ₹9 × $1,000 = ₹9,000. The article calls this risk, not automatically a loss.

₹85

Dollar becomes cheaper

At this rate, the author says the RBI could make money on the swap outcome. The same contract can move either way.

₹85₹96 agreed₹105 The contract fixes one rate; the world keeps moving.

5. What the article is not saying

A currency swap does not make every risk disappear. It changes which institution faces which exposure.

Bank still has

• A promise to repay the NRI
• Loans made with the rupees
• Credit risk if borrowers default
• The job of finding the interest dollars

RBI has

• The other side of the FX swap
• An exchange-rate outcome at settlement
• A position backed by its wider dollar-reserve context, as the author frames it

Important: “The NRI loses nothing” is the author’s simplified example, not a universal guarantee about every product, hedge, bank, or market condition.

6. The useful habit

When you see a huge financial headline, do not ask only “how big is it?” Ask “who owes whom, under which contract?”

1. Counterparty?Who signed the promise? 2. Contract?Deposit, swap, or loan? 3. Risk?FX, credit, or fiscal?

That is the article’s core mental model: follow the arrows before judging the headline.

AN IDEA TO TAKE WITH YOU CORE MECHANIC
When the rupee stumbled, the central bank subsidized dollar hedging so commercial banks could import foreign currency without catastrophic exchange risk.
FIRST-PRINCIPLES LABORATORY · EDITION 001 Explore all studies in the Lab ↗