Contract return and account-currency return use different cash flows. Conversion at entry and at receipt can reverse the sign of a nominal gain.

What the primary record establishes

The ECB publishes reference exchange rates for information purposes and strongly discourages their use for transactions. That distinction matters when a report translates a foreign-currency payout: a reference conversion does not prove the customer could execute at that price. ECB — Euro foreign exchange reference rates ↗

WFN’s example assumes a cash-settled contract bought for USD 50 when one euro buys one dollar, followed by a USD 60 receipt when one euro buys USD 1.50. These deliberately hypothetical rates are not ECB observations or available market quotes.

What the distinction changes

The initial outlay is EUR 50. The later USD 60 converts to EUR 40 at the assumed second rate. The dollar result is positive USD 10, but the two euro cash flows produce a EUR 10 loss before charges. Both calculations can be correct because they use different units.

Comparing a 20% dollar gain with a euro account statement without reconciling the conversions can therefore misclassify the result. A platform’s display currency, contract currency and actual funding currency need not be the same field.

What to check before drawing a conclusion

Record the actual entry debit, settlement receipt, conversion rates and fees with their timestamps. Check whether the account held dollars throughout or converted at each stage; those are different economic paths. Include any separate hedge only if it actually existed.

The example isolates currency translation and does not estimate the chance of winning a binary contract. WFN’s inference is that a performance claim should name its currency and cash-flow convention. A favourable contract outcome alone does not prove positive account-currency wealth change.