Constant Currency Growth Meaning: Why IT Results Carry Three Growth Numbers

Pick up any Indian IT company’s results release and you’ll find the same quarter described three ways: growth in constant currency, growth in dollars, and growth in rupees. They rarely match. Sometimes they’re miles apart. The constant currency growth meaning is simple once you see it: it’s the growth a company would have shown if exchange rates had stayed exactly where they were in the comparison period. Strip out the currency, and what’s left is the business.

That matters more than it sounds. With Infosys due to report its September quarter on October 23, BusinessLine’s poll of brokerages already frames expectations in CC terms. So let’s work through what the number is, how it’s built, and how to read it next to the dollar and rupee figures without getting fooled by any of them.

Constant Currency Growth Meaning, in Plain Words

An Indian IT services firm bills clients in many currencies. Picture it: a bank in Ohio pays in dollars, an insurer in London pays in pounds, a carmaker in Stuttgart pays in euros. Infosys, for one, leads its press release with revenue in US dollars, so every quarter all those pounds and euros have to be converted into dollars at that quarter’s exchange rates.

Here’s the problem. If the pound weakens against the dollar, a UK client paying exactly the same number of pounds as last quarter suddenly looks like a smaller client in dollar terms. Nothing changed in the relationship. The company didn’t lose work. The currency moved, and the reported number moved with it.

Constant currency growth fixes that by converting this period’s revenue at last period’s rates. Infosys spells out its method in a note to every press release: it takes current period revenues in their respective local currencies, converts them to US dollars using prior period exchange rates, and compares that with the prior period’s reported revenue. The gap between that figure and reported dollar growth is what analysts call the cross-currency impact.

One thing to keep straight. CC growth is not an accounting standard number. Deloitte’s guide to SEC reporting rules notes that a constant-currency presentation is treated as a non-GAAP measure, and that the company has to describe how it computed the figure. That’s why you’ll see the method written out in the fine print, and why it’s worth reading, since nothing forces two companies to use an identical approach.

A Worked Example: Same Clients, Same Work, Different Growth

Let’s build a small, made-up IT company to see the mechanics. All numbers in this section are hypothetical example data.

Last quarter, the company earned:

• $70 million from US clients
• £15 million from UK clients, at $1.30 per pound, which is $19.5 million
• €10 million from euro-area clients, at $1.05 per euro, which is $10.5 million

Total: $100 million.

This quarter, business grows 2% in every region in local currency. US clients pay $71.4 million, UK clients £15.3 million and euro clients €10.2 million. But the currencies move: the pound slips to $1.25 and the euro to $1.02.

Reported dollar growth comes to about 0.93% ($100.929 million against $100 million). Constant currency growth is 2.0% ($102.0 million against $100 million). The difference, roughly 107 basis points, is pure currency. Read only the dollar number and you’d think the company had a weak quarter. It didn’t. Every region grew 2%.

Flip the currencies and the story flips too. If the pound had risen to $1.34 and the euro to $1.08, the same local-currency business would have shown dollar growth of about 2.9%, flattering the quarter by nearly a full percentage point.

Constant currency growth tells you what the clients did. Dollar growth tells you what the currency market did to the clients. You need both, but never mix them up.

Then Comes the Rupee

Indian investors hold these shares in rupees, and the company’s rupee results add another layer. Say the rupee was at ₹84 to the dollar last quarter and weakens to ₹87 this quarter (again, hypothetical). Last quarter’s $100 million becomes ₹840 crore. This quarter’s $100.929 million becomes about ₹878.1 crore. That’s rupee growth of roughly 4.5%, on a quarter where the underlying business grew 2%.

So in one quarter our imaginary company can truthfully say it grew 2.0% in constant currency, 0.9% in dollars and 4.5% in rupees. None of these is a lie. They answer different questions.

Infosys Q1 FY27: The Real Thing

The June 2026 quarter at Infosys shows the same pattern with real figures. From the company’s rupee press release and its dollar press release for Q1 FY27:

Look at the year-on-year column first. Dollar growth of 2.8% ran ahead of CC growth of 2.4%, so other currencies were a small tailwind over the year, about 40 basis points by simple subtraction. On a sequential basis it went the other way: 0.8% in dollars against 1.0% in CC, a headwind of about 20 basis points. Same company, same quarter, and the currency effect has opposite signs depending on which period you compare with.

Then the rupee column jumps to 14.0%. That’s the weaker rupee doing the lifting. We can rough out how much from the two releases ourselves. Infosys reported revenue of ₹48,211 crore and $5,082 million for the quarter, which works out to about ₹94.9 per dollar. A year earlier the figures were ₹42,279 crore and $4,941 million, or about ₹85.6. That’s our own division, not a rate Infosys publishes, and it’s only a blended average, but it shows the rupee was roughly 10.9% weaker against the dollar on this measure. Multiply 2.8% dollar growth by that currency shift and you land right around the 14% rupee growth in the release.

In other words, of that 14% headline rupee growth, the business itself accounts for something like 2.4%. The rest is currency. If you’re comparing an IT company’s rupee growth with, say, a domestic FMCG company’s rupee growth, this is the trap. They aren’t measured on the same footing.

A double-digit rupee growth number from an IT company can sit on top of low single-digit growth in the actual business. Always find the CC line before you get excited.

Why Companies Give Guidance in Constant Currency

Notice that Infosys’s FY27 revenue guidance, 1.5% to 3.0% as stated in the Q1 release, is given in constant currency, and brokerages discuss it in the same terms. It makes sense. Management can plausibly forecast client demand. It cannot forecast where the euro will be in March.

So when the guidance changes, it’s a change in the demand outlook, not a currency call. BusinessLine reports that Emkay Global expects Infosys to trim its FY27 guidance to 1.5% to 2.5%, which lowers the midpoint by 25 basis points to 2%. A quarter of a percentage point sounds tiny. In CC terms, for a company of this size, it’s a meaningful statement about demand.

What Constant Currency Growth Does Not Remove

CC growth takes out exchange rates. It does not take out acquisitions. If a company buys another firm, that firm’s revenue flows into CC growth like any other revenue. In BusinessLine’s preview, PL Capital expects Infosys’s Q2 growth to be helped by a month’s contribution from the Optimum acquisition. So a CC number can still overstate how fast the existing business is growing. Check whether the release, the fact sheet or the earnings call breaks out what the acquired business added.

It also doesn’t tell you anything about margins directly. Currency can help or hurt profitability separately from revenue. BusinessLine notes PL Capital expects favourable currency movements to support Infosys’s EBIT margin in Q2, though largely offset by amortisation expenses and AI investments. That’s a margin story, sitting on a different line of the results from the CC revenue figure.

And CC doesn’t mean “organic” or “like-for-like” in a strict sense. It’s one adjustment, for one thing. Treat it as cleaner than reported growth, not as perfectly clean.

Who Feels the Cross-Currency Effect Most

The size of the gap between CC and dollar growth depends on where a company’s clients sit. A firm with mostly US clients bills mostly in dollars, so there’s little to convert. A firm with heavy UK and European exposure feels every swing in the pound and euro.

A Financial Express report from January 2024 gives a good illustration. It said Europe, including the UK, contributes about 20-30% of Indian IT companies’ revenue, and quoted Jefferies expecting cross-currency headwinds of 20 to 80 basis points across its coverage for that December quarter, with the highest for Coforge, which has high Europe and UK exposure, and the lowest for LTIMindtree, which has high US exposure. The specific numbers are from that one quarter, but the logic holds every quarter: the more non-dollar revenue, the bigger the wedge.

That’s why the geography split in an IT company’s fact sheet is worth reading alongside the growth numbers. Our guide on segment reporting in quarterly results walks through how to read those business-wise and region-wise tables.

Reading the Numbers on Results Day

When the next IT result drops, here’s the order we’d read things in:

1. CC growth, quarter on quarter. This is the cleanest read on momentum. Compare it with what brokerages expected. For Infosys’s September quarter, BusinessLine’s brokerage poll puts the range at 1.1% to 1.7% sequential CC growth.
2. Dollar growth, and the gap to CC. Work out the cross-currency impact yourself by subtracting. PL Capital, for instance, expects 1.1% CC and 0.9% dollar growth for Infosys, implying a headwind of about 20 basis points.
3. Rupee growth last, not first. It’s the number that feeds into rupee profit and EPS, so it matters for valuation, but it carries the most currency noise. Brokerages in the same poll expect Infosys’s rupee revenue to grow 1.7% to 2.3% sequentially, which is above the CC range. That gap is currency.
4. Acquisition contribution. Check how much of the CC growth came from deals closed during the quarter.
5. Guidance in CC. Any change to the full-year range usually says more about demand than any single quarter’s figure.

You can try this on results already out this season. Our Tech Mahindra Q2 results write-up puts the company’s dollar revenue growth and constant currency growth next to each other, and the same subtraction gives you its cross-currency effect for the quarter.

Common Mistakes to Avoid

• Comparing one company’s CC growth with another’s rupee growth. It happens all the time on social media. Compare like with like.
• Treating a currency tailwind as a business win. If dollar growth beats CC growth, the extra came from exchange rates and can reverse next quarter.
• Ignoring the comparison period. As the Infosys numbers show, the currency effect can be a tailwind year on year and a headwind quarter on quarter at the same time.
• Assuming every company calculates CC the same way. Read the method note. It’s usually one sentence long.

Constant currency growth won’t tell you whether to own an IT stock. What it will do is stop you from crediting management for the rupee, or blaming them for the pound. For the full checklist of what else to read in a results release, see our pillar guide on how to analyse quarterly results of a company.

Disclaimer: This article is for information and education only and is not investment advice or a recommendation to buy or sell any security. Infosys figures and its constant currency method are taken from its Q1 FY27 rupee and dollar press releases; Q2 FY27 expectations and brokerage views are as reported by BusinessLine on October 18, 2026; the Europe revenue share and Jefferies estimates are from Financial Express (January 2024); and the non-GAAP treatment is from Deloitte’s SEC reporting guide. The hypothetical company, its exchange rates and all figures in the worked example are example data, and the implied rupee rates and percentage gaps are our own arithmetic. Investing in equities carries risk, so consult a SEBI-registered investment adviser before making investment decisions.