Why presentation currency trips up audit teams
A subsidiary in Tokyo books everything in JPY. The parent reports in EUR. Somewhere between the two, a closing rate gets pulled from the wrong date, or an average rate gets applied to a quarter where the yen swung 8%. Translation differences flow through OCI and nobody on the team can explain the movement in the FCTR. It's one of those areas where the file should tell a story, but in practice the WP is a spreadsheet dump with no narrative at all.
IAS 21.38 permits an entity to present its FS in any currency. When the presentation currency differs from the functional currency, the entity translates results and financial position using IAS 21.39 . Balance sheet items translate at the closing rate on the reporting date. Income statement items translate at exchange rates on the transaction dates, though IAS 21.40 accepts a period average when rates don't fluctuate much.
That gap between net assets at the closing rate and the income statement at transaction-date (or average) rates produces an exchange difference. IAS 21.39 (c) requires the entity to recognise that difference in OCI. The cumulative amount sits in equity (the "foreign currency translation reserve") until the entity disposes of the foreign operation, when IAS 21.48 reclassifies it to profit or loss.
Key points
- An entity can choose any currency as its presentation currency. The functional currency is determined by the economic environment and can't be freely selected.
- Assets and liabilities translate at the closing rate. Income and expenses translate at the rate on each transaction date (or a period average as a practical approximation).
- Translation differences go to OCI, not to profit or loss. They accumulate in the FCTR until disposal of the foreign operation.
- Picking a presentation currency that differs from the functional currency adds a full layer of translation work to every reporting period. For groups with subs in ten currencies, this gets painful fast.
Group reporting and the audit angle
For group reporting, the distinction between functional and presentation currency matters at two levels. Management determines each subsidiary's functional currency based on IAS 21.9 -14. It then translates every sub's results into the group's presentation currency before preparing the consolidated FS. ISA 600.25 expects the group engagement team to understand these translation procedures, because exchange differences can be mat enough to affect the group opinion.
In our experience, the most common audit issue isn't the maths of translation itself. It's the rates. Teams pull rates from different sources (ECB versus Bloomberg versus the client's own treasury system) and don't reconcile them. PY rates get carried forward without checking whether the client changed its source. Appears reasonable, waive further pursuit is what the WP effectively says, even when the rate source has shifted mid-year.
Related terms
Related reading
Frequently asked questions
Can a company choose any currency as its presentation currency?
Yes. IAS 21.38 permits an entity to present its FS in any currency. It doesn't need to be the functional currency or the currency of the country where the entity is domiciled. If the presentation currency differs from the functional currency, the entity must translate all amounts using IAS 21.39-42, and the resulting exchange differences go to OCI.
What is the difference between functional currency and presentation currency?
Functional currency is determined by the economic environment in which the entity primarily operates (IAS 21.9). It's a matter of fact, not choice. Presentation currency is the currency used to present the FS, and it is a free choice under IAS 21.38. An entity with EUR as its functional currency can present in USD, but it must translate every balance and transaction using the IAS 21.39 method.
How does a change in presentation currency affect the audit?
A change in presentation currency is a voluntary accounting policy change under IAS 8.14. The auditor needs to verify that the translation method follows IAS 21.39-42, that exchange differences are correctly recognised in OCI (not P&L), and that comparatives have been restated in the new presentation currency. ISA 540 considerations apply to the exchange rates used.