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CAS vs IFRS: The 8 Differences That Actually Change Your Numbers

CAS vs IFRS: the 8 differences that affect foreign companies in China, including revenue, assets, R&D, impairment and cash flow treatment.

CAS vs IFRS: The 8 Differences That Actually Change Your Numbers
Caigeek Finance TeamAugust 4, 2026

Direct answer: China Accounting Standards (CAS) and IFRS are converged in many areas, but eight differences still change reported numbers: revenue recognition timing, asset revaluation, R&D capitalization, impairment rules, related-party disclosures, financial-statement format, cash-flow classification and inventory costing. Foreign companies operating in China need to understand these differences because local statutory books follow CAS while group reporting often follows IFRS.

1. The eight differences in practice

AreaCAS (Chinese Accounting Standards)IFRSPractical impact
Revenue recognitionFollows CAS 14, broadly aligned with IFRS 15 but with specific Chinese implementation guidanceIFRS 15 principles-based five-step modelPlatform commissions, refund reserves and loyalty points may be treated differently.
Asset revaluationGenerally historical cost; revaluation is limited and requires specific approvalPermits fair-value revaluation for certain classes of property, plant and equipment and intangible assetsGroup IFRS books may show higher asset values than local CAS books.
R&D expenditureResearch costs expensed; development costs capitalised only if strict criteria are metDevelopment costs capitalised under IAS 38 if criteria are metCapitalised development may differ in timing and amount, affecting profit and amortisation.
ImpairmentAsset impairment generally not reversed once recognisedImpairment may be reversed for some assets if conditions improveWrite-downs under CAS may be permanent even if IFRS would allow a reversal.
Related-party disclosuresBroader disclosure requirements, including certain state-owned entities treated as related partiesNarrower definition focused on control and significant influenceDisclosure lists differ, and comparability can be hard.
Financial statement formatPrescribed formats and line items under CASMore flexible presentationHeadquarters may need to reclassify CAS statements into group formats.
Cash flow classificationSpecific rules; interest and dividends may be classified differentlyMore choices under IAS 7Operating cash flow may differ between the two bases.
Inventory costingLIFO is not permittedLIFO is not permitted under IFRS eitherBoth use weighted average or FIFO, but method changes and write-down reversals differ.

2. Why these differences matter for foreign companies

Most foreign companies in China keep statutory books under CAS and prepare group reporting under IFRS or US GAAP. The two sets of numbers will not match line by line. The difference is not an error; it is a conversion issue.

Management needs a bridge document that explains the major adjustments: revenue cut-off, asset values, capitalised R&D, impairment, related-party reclassification and cash-flow mapping. Without this bridge, headquarters may misread China performance.

3. How to manage the CAS-to-IFRS bridge

  1. Identify the group reporting basis
    IFRS, US GAAP or another standard.
  2. Map the major difference areas
    Focus on the eight areas above plus tax, currency and consolidation adjustments.
  3. Build a standard monthly bridge
    Reconcile CAS P&L and balance sheet to the group view with named adjustments.
  4. Document judgments
    Revenue cut-off, impairment, capitalisation and related-party classifications should be documented and approved.
  5. Review quarterly with the auditor
    Ensure the bridge is consistent with statutory and audit positions.
  6. Train headquarters readers
    Explain why the local numbers and group numbers differ.

4. Where Caigeek fits

Caigeek prepares China statutory books under CAS and builds monthly management reporting that bridges to the group’s IFRS or US GAAP view. We focus on the operational differences that matter most for e-commerce and consumer brands: revenue timing, platform deductions, refunds, inventory valuation and advertising accruals.

Frequently asked questions

1. Are CAS and IFRS the same?

No. They are converged in many areas but still differ in revenue recognition detail, asset revaluation, impairment reversal, related-party disclosure, statement format and cash-flow classification.

2. Do foreign companies in China have to use CAS?

Statutory accounting records and reports must follow CAS. Group reporting to headquarters may be prepared under IFRS or US GAAP using a reconciliation or bridge.

3. Which is more conservative, CAS or IFRS?

CAS is often more conservative in areas such as impairment reversal and asset revaluation. IFRS allows more fair-value measurement and reversal of prior impairments in some cases.

4. Can a company keep one set of books under IFRS in China?

No. Statutory books for a Chinese entity must be maintained under CAS. IFRS reporting is typically a separate group reporting layer.

5. What is the biggest CAS vs IFRS issue for e-commerce?

Revenue recognition timing and platform deductions. CAS and IFRS may treat commissions, refunds, shipping and promotional vouchers differently at the cut-off level.

6. Do auditors care about the CAS-IFRS bridge?

The statutory auditor reviews CAS books. The group auditor reviews the bridge. Both must be consistent and well documented.

7. Can Caigeek prepare IFRS reports?

Caigeek prepares management reporting that bridges CAS to IFRS or US GAAP. We do not issue statutory or group audit opinions.

Important notes

This article provides general procurement and finance-management information for foreign companies operating in China. It is not accounting, tax, legal, audit or investment advice for a specific company. Rules and deadlines should be confirmed with the local tax bureau, market regulation department and a licensed professional adviser.

Frequently asked questions

No. They are converged in many areas but still differ in revenue recognition detail, asset revaluation, impairment reversal, related-party disclosure, statement format and cash-flow classification.

Statutory accounting records and reports must follow CAS. Group reporting to headquarters may be prepared under IFRS or US GAAP using a reconciliation or bridge.

CAS is often more conservative in areas such as impairment reversal and asset revaluation. IFRS allows more fair-value measurement and reversal of prior impairments in some cases.

No. Statutory books for a Chinese entity must be maintained under CAS. IFRS reporting is typically a separate group reporting layer.

Revenue recognition timing and platform deductions. CAS and IFRS may treat commissions, refunds, shipping and promotional vouchers differently at the cut-off level.

The statutory auditor reviews CAS books. The group auditor reviews the bridge. Both must be consistent and well documented.

Caigeek prepares management reporting that bridges CAS to IFRS or US GAAP. We do not issue statutory or group audit opinions.

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