How does foreign currency translation affect consolidated revenue and margins from the parent's perspective?

Question

AcadiFi · Accepted Answer

This is a practical analytical skill tested on CFA Level II — decomposing translated results into organic (local currency) and currency components.

**The Framework**

When translating income statement items under the current rate method, revenue and expenses use the **average exchange rate** for the period. If the local currency weakens, the average rate produces fewer USD per BRL, compressing the translated results.

**Andrade Logistics Example**

| Metric | Year 1 (BRL) | Year 2 (BRL) | Growth (BRL) |
|---|---|---|---|
| Revenue | BRL 500M | BRL 575M | +15.0% |
| Operating income | BRL 100M | BRL 115M | +15.0% |
| Operating margin | 20.0% | 20.0% | Flat |

| Exchange Rate | Year 1 | Year 2 |
|---|---|---|
| Average BRL/USD | 4.00 | 4.60 |

**Translated Results (USD):**

| Metric | Year 1 (USD) | Year 2 (USD) | Growth (USD) |
|---|---|---|---|
| Revenue | $125.0M (500/4.00) | $125.0M (575/4.60) | +0.0% |
| Operating income | $25.0M | $25.0M | +0.0% |
| Operating margin | 20.0% | 20.0% | Flat |

Wait — the growth is actually flat in USD despite 15% BRL growth. Let me adjust the example to match the question's 5% USD growth.

Revised average rate Year 2: 4.38

| Metric | Year 1 (USD) | Year 2 (USD) | Growth (USD) |
|---|---|---|---|
| Revenue | $125.0M | $131.3M (575/4.38) | +5.0% |
| Operating income | $25.0M | $26.3M | +5.0% |
| Operating margin | 20.0% | 20.0% | Flat |

**Decomposition:**

Total USD revenue growth: +5.0%
= Organic growth (BRL): +15.0%
+ Currency effect: -10.0% (BRL depreciation)

Approximate formula:
**USD growth ≈ Local currency growth + FX effect**

More precisely:
FX effect = (Old rate - New rate) / Old rate x (1 + local growth)
= (1/4.00 - 1/4.38) / (1/4.00) x 1.15
= (0.2500 - 0.2283) / 0.2500 x 1.15
= 8.68% x 1.15 = -10.0%

**Key Insight: Margins Are Preserved**

Notice that the operating margin stays at 20% in both currencies. Under the current rate method, since ALL income statement items use the same average rate, **profitability ratios are unaffected by translation**. This is a testable fact.

**Exam tip:** If a question asks how translation affects margins under the current rate method, the answer is: it doesn't (assuming no transactions in other currencies). Under the temporal method, margins CAN change because different rates are used for COGS, depreciation, and other items.

For more multinational analysis practice, check our CFA Level II materials.

How does foreign currency translation affect consolidated revenue and margins from the parent's perspective?

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