Constant-Currency Growth: Separate Sales From FX

Constant-currency revenue growth holds an exchange-rate convention fixed so you can separate local-business movement from translation effects. Show it beside reported growth, not in place of it. State which period’s rates you use, apply the convention consistently and reconcile the difference back to actual reported-currency revenue.

Write the translation convention first

Choose the reporting currency, local currencies, periods and rate source. This exercise translates current-period local revenue at the prior period’s illustrative average rate. Another issuer may use a different convention, so a shared label is not enough for comparison.

The SEC’s Question 104.06 emphasizes showing historical and constant-currency amounts and describing the method. Ask the finance owner how the actual company should present any adjusted measure.

Work a fictional one-currency bridge

Fictional inputs: comparable euro revenue rises from €100,000 in Period A to €110,000 in Period B. The illustrative average rate falls from $1.20 per euro to $1.05. These are invented teaching rates, not market quotations.

Local and constant-rate revenue grow 10%. Reported dollar revenue declines 3.75%. Both statements can be true because the euro translates into fewer dollars in the second period.

Reconcile the dollar difference

The $16,500 translation effect is the difference between the two Period B translations. It is not automatically a cash loss, a hedging result or the foreign-exchange gain/loss line in the accounts. Transaction currencies, settlement and accounting treatment can create separate effects.

Control the other moving parts

• Use comparable entities and service periods before attributing the difference to FX.
• Convert each local-currency stream separately; do not average unrelated percentage changes.
• Keep price, volume and acquisitions distinct from rate changes.
• Identify average-rate versus transaction-rate methods.
• Show reported results with equal clarity and retain the method when a favorable FX effect turns unfavorable.

This worksheet explains revenue translation. The financial-model guide remains the owner of the broader operating and cash forecast.

Copy the currency bridge

Periods and reporting currency:
Comparable entity/customer perimeter:
Local revenue by currency in each period:
Actual rate source and convention:
Constant-rate convention and reason:
Reported revenue by currency:
Current local revenue at fixed comparison rates:
Business movement + currency effect = reported change:
Rounding and residual difference:
Excluded transaction/hedging effects:
Finance owner and next review:

Exercise: a tailwind can hide flat business

Local revenue stays at €80,000. The rate rises from $1.00 to $1.10 per euro. What are reported and constant-rate growth under the prior-rate convention?

Answer: reported revenue grows from $80,000 to $88,000, or 10%. Constant-rate revenue remains $80,000, so growth is 0%. The $8,000 difference comes from translation, not more local sales.

Make the explanation repeatable

Finish with one sentence for each driver: the local change, the translation effect and the reported result. Retain the inputs so another person can reconstruct all three.

Keep the approved bridge with your fundraising materials in Finta. Ask Aurora to help explain the difference using your reviewed currency table. Verify the rate convention and calculations in the source workbook before using the narrative in an investor conversation.

Finta Field Guide. By Finta Editorial Team. Sources checked November 14, 2026. Examples are original, fictional teaching exercises, not customer results, benchmarks or individualized financial, accounting, legal or tax advice.