The PCG and US GAAP: two different philosophies
The PCG is designed to satisfy tax authorities. US GAAP is designed to reflect economic reality for investors. Here are the three areas where that difference causes the most friction.
Inventory valuation: the LIFO problem
LIFO is permitted under US GAAP but strictly prohibited under French PCG and IFRS. If your French subsidiary consolidates into a US parent using LIFO, you need a manual adjustment every single period.
The subtler problem is cost capitalization. French reporting often omits freight-in, customs duties, and insurance costs that US GAAP (ASC 330) requires in inventory value. When those costs are missing, your French subsidiary's margins look better than they are.
Standardize the group on FIFO or Weighted Average Cost. Both methods work under PCG and US GAAP. Your subsidiary books inventory once and the number holds on both sides.
Fixed assets: when tax rules diverge from economic reality
French depreciation follows tax-allowable schedules. US GAAP follows actual economic useful life. The same asset, under the same roof, gets depreciated differently depending on which books you are reading.
Componentization adds another layer. IFRS (IAS 16) requires breaking a building into its components — roof, HVAC, structure — each with its own timeline. If your group consolidates under IFRS, this is mandatory at the consolidated level. Your French subsidiary's statutory accounts follow PCG, which takes a similar but less prescriptive approach.
Maintain a dual fixed asset register. One legal register for French tax filings, one parallel register in your ERP following US GAAP. More work upfront, far less at year-end.
Systems: where manual adjustments become audit risk
Most mid-sized companies manage the PCG-to-GAAP gap through manual top-side adjustments — spreadsheet entries outside any formal ledger, hard to audit and easy to get wrong.
Under US GAAP (ASC 360), impairment testing requires projected future cash flows at the asset level. If your French subsidiary's data is not structured for that, you cannot run the test properly.
Implement multi-book accounting in an ERP such as NetSuite or Sage Intacct. One transaction, booked once, systematically categorized for both PCG and US GAAP. A single source of truth for both your French accountants and your US consolidation team.
Getting it right from the start
The gap between French and US accounting on physical assets is not just a compliance problem — it is a visibility problem. Standardize your inventory method, maintain parallel asset registers, and invest in systems that handle the translation without manual intervention. A month-end close that used to take weeks becomes something your team can actually rely on.