Forex debt and the hidden hit

Sometimes a company reports a year where sales grew, the factories ran well, the operating profit rose — and then, at the bottom of the statement, net profit falls off a cliff. Nothing in the business went wrong. And yet a large loss appeared, seemingly from nowhere.

Very often the culprit is a currency you never see on the sales line at all: a loan the company took in dollars, and a rupee that weakened while that loan was still outstanding. The loss did not come from customers or costs. It came from the debt being repriced in rupees — and it can be big enough to swamp a good operating year.

This is the quietest way the rupee reaches a company, and the most likely to catch a beginner off guard, because it hides where beginners rarely look: in the notes to the accounts. This module teaches you to find it before the results do.

Start with why the exposure exists in the first place, because the reason is entirely reasonable and that is what makes it dangerous. Indian firms often borrow abroad in foreign currency through what is called an external commercial borrowing — a loan raised overseas, usually in dollars, typically at a lower headline interest rate than a rupee loan at home. A firm that can borrow dollars at, say, 5% instead of rupees at 9% sees an obvious saving, and in a calm year when the rupee is steady, that saving is real money.

The catch is hidden in the word "steady." That cheaper dollar loan carries a risk the rupee loan does not: it has to be repaid in dollars. If the rupee weakens between borrowing and repaying, the firm needs more rupees to buy back the same dollars. The interest saving can be wiped out many times over by the currency moving the wrong way. The cheap loan was only cheap while the rupee held.

This is why the danger builds precisely in good times. Long calm stretches make dollar borrowing look free, so more firms reach for it and hedge less, quietly loading fragility onto their balance sheets. The very stability of the rupee is what tempts companies to stop protecting against it. When the currency finally moves, the firms most exposed are often the ones that felt safest for longest.

The mechanism turns on one accounting rule, and once you see it the whole thing is simple. A foreign loan sits on the balance sheet in rupees, and it must be re-stated at the current exchange rate at the end of each reporting period. This restatement is called marking to market — revaluing something at today's price rather than the price it was booked at. When the rupee weakens, a dollar loan is worth more rupees than before, so the rupee value of the liability rises, and the increase is recorded as a foreign-exchange loss.

The crucial feature: this loss appears even though not a single rupee has changed hands. No repayment has been made. The company simply owes more in rupee terms than it did last period, and the accounts must say so. It is a real accounting loss but, for now, a paper one — a warning about a future cash obligation, not a cash event today.

Now the defence against all this, and why some firms take the hit and others do not. A forex hedge is a contract that locks in a future exchange rate today, so the company knows exactly how many rupees it will need to repay whatever the rupee does. Hedging costs money — you pay for the certainty — which is why a firm chasing the cheapest possible funding is tempted to skip it. Debt left uncovered like this is called unhedged exposure: foreign-currency borrowing with no such protection, fully open to the currency. The unhedged firm keeps the interest saving and keeps the whole risk. When the rupee holds, it looks clever. When the rupee breaks, it takes the loss the hedged firm avoided.

The exposure most worth worrying about is the one that is both unhedged and unmatched — a firm that borrows in dollars but earns only in rupees, so it has no dollar income to repay the dollar loan from. A firm that earns dollars can repay dollars naturally; a purely domestic company with a dollar loan is betting on the rupee whether it means to or not.

Follow the money through one company across one bad year for the rupee. illustrative

A domestic infrastructure firm borrows $100 million abroad because the dollar rate looks cheap. At the time, the rupee is ₹80 to the dollar, so the loan sits on the balance sheet at ₹800 crore. The firm earns entirely in rupees from projects at home; it did not hedge, to keep the interest bill low. For two calm years this looks like a smart, cheap loan.

Then the rupee weakens to ₹88 over a year. The same $100 million loan must now be shown at ₹880 crore. That ₹80 crore increase is booked as a forex loss and drags net profit down sharply — even though the operating business had a perfectly good year, revenue grew, and not one rupee was repaid. On the surface the company looks as if something broke. In truth, only the currency moved.

Here is the part that separates a paper scare from a real problem. This year's ₹80 crore is a revaluation, not a payment. Whether it ever becomes a genuine cash loss depends on the exchange rate on the day the loan finally has to be repaid — years away — and on whether the firm can refinance it in the meantime. If the rupee recovers before then, part of the loss reverses. If the rupee keeps sliding and the firm has no dollar income, the paper loss hardens, over time, into real rupees out the door.

A forex loss in the accounts is a fact about the past and a hint about the future, and it is easy to over- or under-read.

It cannot, by itself, tell you whether the business is in trouble. A large paper forex loss can sit on top of a thriving operating business, and a firm with no forex loss can be quietly rotting. The currency line and the operating lines answer different questions; never let one stand in for the other.

It cannot tell you what the rupee will do next, and therefore cannot tell you whether this loss will grow, reverse, or crystallise. The repayment-day exchange rate is unknowable, and building a firm expectation of it is guesswork dressed as analysis. The useful move is not to predict the rupee but to know, before it moves, which of your holdings carry unhedged dollar debt and no dollar income — so a currency shock reveals nothing you did not already understand.

And the reported number can itself be arranged to soften the blow. Some of the forex effect may be routed away from the profit statement into reserves, or spread over the life of the asset, depending on the accounting choices allowed. So the loss you see in one line may not be the whole exposure. The headline forex number is a presented figure, and the notes are where the fuller story lives. Read the notes on borrowings and on hedged-versus-unhedged exposure, not just the single loss line on the face of the accounts.

The forex-debt trap is quiet, which is exactly why it fools people. Here is where the mistakes cluster.

The single most useful habit from this module: when a firm has foreign-currency debt, go to the notes and find the share that is unhedged, and ask whether the company earns any foreign currency to repay it. Those two facts — how much is uncovered, and whether there is natural income to cover it — tell you more about currency risk than any headline ever will.