Foreign Currency Translation
Why an Indian IT company's US dollar revenue can grow nicely in dollar terms and still show disappointing growth in rupees — or the other way around — without a single extra dollar of business won or lost.
In plain English
Imagine an Indian IT services company earns $100 million in revenue from US clients in a quarter. When it reports its results in rupees, that $100 million has to be converted at whatever the rupee-dollar exchange rate was during the period. If the rupee weakened from ₹80 to ₹83 per dollar over that quarter compared to the year-ago quarter, the SAME $100 million of actual dollar business now translates into more rupees than before — the company's reported rupee revenue grows, even if it won not a single extra dollar of new business. Foreign currency translation is the set of rules that governs exactly how, and when, these currency effects get folded into a company's reported numbers.
Words you'll need first
The currency of the primary economic environment in which a company (or a specific foreign operation within a group) actually operates — usually the currency it earns most of its revenue in and incurs most of its costs in, not necessarily the currency of the country it's incorporated in. An Indian company's US subsidiary, if it genuinely runs its own local business in US dollars, will typically have the US dollar as its functional currency, separate from the Indian parent's own functional currency.
The currency a company chooses to REPORT its financial statements in — for an Indian listed company, this is the Indian rupee. If a subsidiary's functional currency differs from the group's presentation currency, its entire financial statements have to be TRANSLATED into rupees for consolidation, using specific exchange rates prescribed by the standard — this translation process is exactly where currency-driven swings, unrelated to the underlying business, enter a company's consolidated numbers.
A worked example, with numbers
| Item | Year-ago quarter | This quarter |
|---|---|---|
| Revenue in US dollars | $100 million | $105 million |
| INR/USD exchange rate used | ₹80 | ₹84 |
| Revenue reported in rupees | ₹800 crore | ₹882 crore |
- The underlying dollar business grew a genuine 5% ($100 million to $105 million) — but reported RUPEE revenue grew a much larger 10.25% (₹800 crore to ₹882 crore), because the rupee weakened by roughly 5% against the dollar over the same period, on top of the real business growth.
- Neither growth figure is 'wrong' — the 5% dollar growth reflects the actual underlying business momentum, while the 10.25% rupee growth is what Indian shareholders actually see reported as top-line growth.
- This is precisely why large IT services and export-oriented companies routinely report both 'constant currency growth' and headline reported growth in rupees side by side — comparing only the headline number across periods with different currency movements can be genuinely misleading.
- If the rupee had instead STRENGTHENED against the dollar, the same 5% genuine dollar growth would have translated into a smaller, potentially even negative, rupee revenue growth figure — the currency effect can flatter or punish reported growth in either direction, independent of the real business.
What it does to the financial statements
Impact on the P&L
- Revenue, costs, and profit of foreign operations get translated into the reporting currency using specific rules — broadly, P&L items at the average exchange rate for the period, and balance sheet items at the closing rate on the reporting date.
- A company with foreign-currency revenue but rupee-denominated costs, or vice versa, has a natural currency exposure that shows up as genuine, real profit-margin volatility as exchange rates move — export-heavy Indian companies generally benefit from rupee depreciation.
- Companies actively manage this exposure through hedging (see the Hedge Accounting article) — realised and unrealised gains or losses on those hedging instruments also flow through the P&L or Other Comprehensive Income, depending on the specific treatment applied.
- 'Constant currency' growth figures, a common supplementary disclosure at export-oriented companies, strip out exchange rate movements specifically to let investors judge the real, underlying pace of business growth.
Impact on the Balance Sheet
- Translating a foreign subsidiary's balance sheet into the group's presentation currency creates a Foreign Currency Translation Reserve — a component of Other Comprehensive Income and equity, not the P&L — capturing the cumulative effect of exchange rate movements on net assets held in foreign currencies.
- A company with substantial foreign subsidiaries can show meaningful swings in this translation reserve, and so in total equity, purely from currency movements, with zero change in the underlying foreign operations' local-currency performance.
- Foreign-currency-denominated borrowings are revalued at each reporting date using the closing exchange rate, meaning a weakening rupee increases the reported rupee value of foreign-currency debt — a real, though largely non-cash until actual repayment, effect on reported leverage.
- This translation reserve only gets 'realised' into the P&L when a foreign operation is actually sold or substantially disposed of — until then, it sits quietly within equity, a frequently overlooked corner of a multinational company's balance sheet.
Which standard covers this
In India this is governed by Ind AS 21 – The Effects of Changes in Foreign Exchange Rates, notified under the Companies (Indian Accounting Standards) Rules and applicable to companies that follow Ind AS, covering both the translation of foreign operations for consolidation and the accounting for individual foreign-currency transactions.
How it's recognised globally
Globally, the equivalent is IAS 21, and Ind AS 21 mirrors its core functional-currency and translation-reserve framework closely. Under US GAAP, equivalent guidance sits in ASC 830, sharing broadly the same approach — translate P&L items at average rates, balance sheet items at closing rates, and route the resulting translation adjustment through Other Comprehensive Income rather than the P&L. This is a reasonably well-converged area of accounting globally, since most of the real-world differences between an Indian and a US multinational's currency-related disclosures come down to how much voluntary detail, like constant-currency growth figures, each company chooses to provide, rather than differences in the underlying mandatory accounting.
Real example — Indian listed company
India's large IT services exporters are the clearest, most closely watched real-world example of foreign currency translation effects in quarterly results. Infosys, which earns the large majority of its revenue in US dollars, euros, and other foreign currencies while reporting its headline results in Indian rupees, routinely discloses both its rupee revenue growth AND its 'constant currency' growth figure in every quarterly results presentation, specifically to let investors separate genuine business momentum from currency translation effects, exactly as this article describes. A quarter in which the rupee moves sharply against the dollar can create a meaningful gap between these two growth figures, which is precisely why serious analysts covering Infosys and its peers always check the constant-currency figure before drawing conclusions about the company's actual underlying growth momentum for that quarter.
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