When your business operates in India, invoices in USD, borrows in JPY, and reports in INR – which currency tells the real story?
Imagine this. An Indian company enters into a joint venture with a Japanese partner. The manufacturing facility is in Gujarat. Employees are paid in Indian Rupees. Taxes are paid in India. But most customers are overseas.
Sales contracts are denominated in USD. Raw materials are imported from Japan and settled in JPY. At the end of the year, the finance team notices something strange. Revenue has grown. Operations have remained stable. Cash flows are healthy. Yet reported profits have become unusually volatile.
What changed? Often, the answer isn’t the business. It’s the functional currency.
The Currency That Matters Most Isn’t Always the One You Report In
Many people assume that a company’s accounting is prepared in the currency of the country where it operates. That’s not necessarily true.
Under IAS 21 The Effects of Changes in Foreign Exchange Rates and Ind AS 21 The Effects of Changes in Foreign Exchange Rates, every entity must first identify its functional currency – the currency of the primary economic environment in which it operates.
Notice the emphasis. Not where the company is incorporated. Not where the head office is located. But where its business is fundamentally driven.
Because accounting isn’t interested in geography. It’s interested in economic reality.
Why Functional Currency Is More Than an Accounting Choice
Choosing a functional currency is not an administrative exercise. It determines how almost every foreign currency transaction is accounted for. More importantly, it determines where exchange differences appear in the financial statements.
If the functional currency truly reflects the business model, exchange movements largely represent genuine economic exposure. But if the functional currency is chosen incorrectly, the financial statements can begin telling a misleading story.
A business that is operationally stable may suddenly appear highly volatile. Margins fluctuate. Foreign exchange gains and losses swing dramatically. Performance comparisons become difficult.
Nothing changed in the business. Only the accounting lens changed.
A Practical Example
Consider an Indian automotive component manufacturer. Its factory, workforce, and operations are entirely based in India. However, almost 90% of its sales are exported to the United States under long-term USD contracts.
Management decides to retain INR as its functional currency because the business is located in India. Over the next year, the rupee weakens sharply.
Every reporting period, large foreign exchange gains and losses begin flowing through the profit and loss account.
Investors may conclude that earnings have become unpredictable. In reality, the underlying business hasn’t changed significantly.
The apparent volatility may simply be the result of measuring the business through a currency that doesn’t best reflect its primary economic environment.
The numbers are technically correct. But do they faithfully represent business performance? That’s the question IAS 21 is designed to answer.
Looking Beyond the Invoice
One common misconception is that the invoicing currency determines functional currency. It doesn’t. IAS 21 asks management to consider several factors together:
- Which currency primarily influences sales prices?
- Which currency mainly determines labour and production costs?
- Which currency finances the business?
- In which currency are operating cash flows generated and retained?
No single indicator decides the answer. Professional judgement does. And that judgement becomes increasingly important for multinational groups, export-oriented manufacturers, technology companies, and cross-border joint ventures.
Why This Matters More Than Ever
Today’s businesses rarely operate within one economic ecosystem. An Indian company may:
- manufacture locally,
- source components globally,
- invoice customers in USD,
- borrow in EUR,
- receive investments in SGD,
- and distribute profits in INR.
Business has become global. Financial reporting must determine which currency best represents that economic reality. The answer is rarely obvious.
The Bigger Lesson
IAS 21 isn’t really about foreign exchange. It’s about faithful representation. The objective isn’t to eliminate currency fluctuations. It’s to ensure that financial statements distinguish between:
- genuine business performance, and
- accounting volatility created by currency measurement.
Those are not the same thing. When functional currency is determined thoughtfully, exchange differences tell investors something meaningful. When it’s determined poorly, they can become little more than accounting noise.
Final Thought
Currencies do more than settle transactions. They shape how performance is measured, risks are perceived, and businesses are valued. That’s why determining functional currency is not just an accounting decision. It’s a strategic judgement about what truly drives the business.
Because sometimes, the biggest risk isn’t foreign exchange. It’s measuring a global business through the wrong currency.