A revenue forecast can change even when the customer buys exactly the same amount. Translate the sale into a different reporting currency and the headline moves. Before treating a forecast revision as evidence of stronger demand, check the exchange-rate assumption underneath it.
Accenture’s October results offer a timely example. The company’s first-quarter outlook separates growth in local currency from the expected currency effect. That distinction matters when an analyst turns management’s operating outlook into a dollar revenue estimate.
Fact: the forecast has two moving parts
Accenture (NYSE: ACN) forecast first-quarter fiscal 2027 revenue of $18.95 billion–$19.60 billion, with growth of 2%–6% in local currency and an approximately negative 1% foreign-exchange impact. For the full fiscal year, its local-currency growth outlook was 3%–6%, with a flat currency assumption. These are management forecasts issued on 1 October, not completed sales. Accenture’s results and outlook also explain that local-currency results restate current activity using the comparable prior-year exchange rates.
International Business Machines (NYSE: IBM) gave a similar separation in its 22 July results: full-year 2026 revenue growth of 4%–5% at constant currency, with currency expected to be neutral at the rates then prevailing. The date belongs beside that assumption. A July currency view is not a statement about October’s exchange rates.
SAP (NYSE: SAP, American depositary receipts) supplies a realised comparison. Its second-quarter 2026 release reported cloud revenue growth of 22%, versus 24% at constant currencies. Those are two presentations of the same period, not two different sales outcomes. SAP reports in euros; the US listing cited here represents one ordinary share per receipt.
SAP · Q2 2026 actual
One quarter, two currency bases
Reported growth
Cloud revenue · year on year
Constant currencies
Cloud revenue · year on year
Interpretation: isolate the translation before judging demand
Constant-currency growth helps answer a limited question: how would the comparison look with exchange rates held on the company’s stated basis? It does not by itself establish how many extra units were sold, how much prices increased or whether acquisitions contributed. A currency adjustment removes one source of movement; it does not remove every assumption.
When comparing two forecasts, first put both on the same reporting period and currency basis. Then separate the revision into changes in operating assumptions and changes in translation. Otherwise an analyst could appear more optimistic about the business merely because the currency input changed.
The denominator deserves equal attention. A growth percentage compares an estimated current-period amount with a previous-period amount. Replacing the exchange rates used on one side of that comparison changes its meaning. Do not combine one company’s constant-currency percentage with another’s reported percentage and call the difference a demand advantage.
Scenario: the same sales, a different dollar answer
Consider a fictional business with just euro sales and dollar reporting. Last year it sold €100 million, translated at $1.10 per euro, producing $110 million of reported revenue. Assume this year’s euro sales rise 5% to €105 million. Hold every operating input fixed and change only the average translation rate.
| Dollars per euro | Dollar revenue | Growth vs $110m |
|---|---|---|
| $1.00 | $105.0m | −4.55% |
| $1.10 | $115.5m | 5.00% |
| $1.20 | $126.0m | 14.55% |
The arithmetic is €105 million multiplied by the chosen dollars-per-euro rate. Growth is that dollar result divided by $110 million, minus one. Percentages are rounded to two decimal places. Local sales growth remains 5% in every row. There is no assumption that any of these exchange rates will occur, or that the rows are equally likely.
One useful sensitivity falls directly out of the example: each $0.01 change in dollars per euro changes translated revenue by $1.05 million. That is a property of this simplified €105 million sales assumption. It is not an estimate for Accenture, IBM or SAP, whose revenues involve several currencies and changing business mixes.
The table also shows why the direction of the quote matters. More dollars per euro raises the dollar value of unchanged euro sales. Reversing the quote to euros per dollar reverses the way the input is expressed. A model should state its units before a reader tries to interpret a positive or negative sensitivity.
Who could benefit?
Conditional interpretation: Accenture and IBM could report more dollar revenue from unchanged foreign-currency sales if those currencies strengthen against the dollar relative to the comparison basis. The mechanism is translation over the reporting quarter or year. Its materiality depends on the currencies, amounts and timing involved; neither company’s headline growth range supplies a complete sensitivity map.
SAP illustrates the corresponding exposure for a euro reporter. Stronger foreign currencies against the euro could lift the euro translation of those sales. Its actual cloud-growth comparison demonstrates that currency can materially change the presented growth rate. It does not establish the direction of the next quarter’s effect.
Who’s at risk?
Conditional interpretation: The same three businesses face the opposite translation risk if foreign sales convert into fewer units of their reporting currency. The near-term exposure is a weaker reported revenue comparison despite an unchanged local-currency path. That alone does not establish weaker customer demand or an earnings decline.
The fictional model deliberately excludes costs. If revenue and costs share a currency, translating both can produce a different profit effect from translating revenue alone. If they use different currencies, the margin effect changes again. Hedging, contract repricing and timing can further alter the result. A revenue sensitivity cannot responsibly be carried straight through to earnings per share.
What would change the assessment?
For the next results, compare the stated currency assumption with the realised currency contribution, then inspect local-currency growth separately. A stronger reported number accompanied by an unchanged operating comparison supports a different explanation from stronger growth on both bases.
These examples use disclosures checked on 16 October 2026 and different financial periods. They are not a ranking of the three companies or a current foreign-exchange forecast. Revisions to guidance, acquisitions and changes in sales or cost mix require a fresh calculation. The useful question is which input changed, and how much of the new answer it explains.
This article explains financial disclosures and hypothetical calculations. It does not provide an investment recommendation.
Photo by CARTIST . on Pexels. Euro banknotes on a pale surface.