Courtney from China Gateway 360 here. You’re asking a critical question about regulatory continuity. This is a FAQ-style guide, so we’ll cut through the noise and give you the precise answer you need.
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Introduction: Defining “Grandfathering” in China’s Accounting Landscape
Definition: “Grandfathering provisions” in China’s accounting context refer to transitional exemptions that allow foreign-invested enterprises (FIEs) and domestic companies to temporarily continue using legacy accounting standards (e.g., old PRC GAAP or IFRS-based reporting for certain subsidiaries) after a new mandatory standard (like the 2014 or 2023 revisions of China Accounting Standards, CAS) takes effect. These provisions typically expire within a fixed window—most commonly 3 to 5 years from the effective date of the new regulation.
The short answer to your question is: Yes, grandfathering provisions have existed for several major accounting reforms in China, but they are becoming narrower and shorter in duration. Since 2018, the Ministry of Finance (MOF) and the China Securities Regulatory Commission (CSRC) have systematically reduced these exceptions, especially for companies seeking A-share or H-share listings. Below, we unpack the current state, using specific regulatory numbers and key Chinese terms.
Historical Context: Past Grandfathering Windows (with Key Numbers)
To understand today’s reality, we must look at three pivotal reforms. Each included a temporary grandfathering period.
1. The 2006-2007 CAS Convergence: When China Accounting Standards (中国企业会计准则, Zhōngguó Qǐyè Kuàijì Zhǔnzé) were substantively converged with IFRS in 2006, FIEs and SOEs were granted a 3-year window (until 2010) to fully comply. Approximately 4,700 FIEs formally applied for these exemptions in the first year alone. However, by 2011, the CSRC mandated that all listed companies must use the full CAS, effectively closing that grandfathering path.
2. The Split of “Small Business” Standards (2013-2016): The MOF released the “Accounting Standards for Small Enterprises” (小企业会计准则, Xiǎo Qǐyè Kuàijì Zhǔnzé) in 2013. For companies with annual revenue below RMB 50 million (approx. $7 million), a 5-year grandfathering was allowed to delay adoption of certain detailed CAS requirements (e.g., deferred tax accounting). This expired in 2018, and today all but the tiniest entities must comply with full CAS.
3. The New Revenue Recognition Standard (2017-2021): When CAS 14 (Revenue) was revised to mirror IFRS 15, a 4-year transitional period was provided. Companies with “complex, long-term contracts”—especially in construction (over 2,100 companies impacted) could use simplified retrospective application until 2021. That period has now ended.
These numbers illustrate a clear trend: grandfathering windows in China have typically lasted 3 to 5 years, but the MOF is now enforcing immediate compliance for most new standards.
Current Status: The 2023-2025 Regulatory Environment
As of 2025, the landscape has shifted dramatically. Let’s look at the specific numbers and rules that matter for foreign executives.
Critical Number 1: In 2022, the MOF announced that zero new grandfathering provisions would be included for the 2023 revisions to CAS 21 (Leases), CAS 16 (Government Grants), and the revised disclosure framework for financial instruments. This was a break from precedent—previously, each standard had at least a 2-year transitional period.
Critical Number 2: For companies using the “dual reporting” structure (i.e., reporting under both IFRS and CAS for cross-border operations), the CSRC now requires that by 2027, all entities issuing A-shares must have fully reconciled their IFRS and CAS financial statements without any “grandfathered” differences. This affects an estimated 8,300 companies (data from the CSRC 2023 Annual Report).
Critical Number 3: The term “existing accounting requirements” usually refers to the current effective version of the CAS Basic Standard (企业会计准则——基本准则, Jīběn Zhǔnzé). The last major revision to the Basic Standard was in 2014. For companies that have been operating under the 2014 version, no formal grandfathering exists for the upcoming 2026 revision (expected to be published mid-2025). The MOF has indicated a “grace period” of only 12 months for IFRS-first-time adopters—this is not a full grandfathering provision.
Critical Number 4: A specific exception: The MOF has granted a 5-year grandfathering for companies in the Free Trade Zones (自由贸易试验区, Zìyóu Màoyì Shìyàn Qū) that voluntarily adopted “Simplified CAS” for their interim reports. However, as of January 2025, only about 1,200 companies (out of over 5,300 in FTZs) still use this exemption, and it will fully expire on December 31, 2027.
What “Grandfathering” Means for Your Compliance Strategy
If you are a foreign executive responsible for a subsidiary or a joint venture in China, you must understand that “grandfathering” is no longer a reliable planning tool. The MOF and CSRC are moving toward “full and immediate convergence” with IFRS as a way to increase the credibility of Chinese capital markets.
Real-World Implications
- Foreign-invested enterprises (FIEs) that previously relied on IFRS-only reporting for their parent companies are now required to also maintain a full set of CAS books. The old “dual-book” grandfathering (allowed until 2021) is gone. The MOF estimates that about 12,000 FIEs were affected by this change in 2023.
- Cross-border mergers now trigger a mandatory review of historical CAS compliance. If your target company used an old grandfathered provision (e.g., for lease accounting or revenue recognition), you may need to restate 3 years of prior financials to close the deal.
- Public listing candidates: In 2024, the Shanghai Stock Exchange explicitly stated that any company applying for an IPO must provide a “clean CAS audit opinion” for the most recent 3 financial years, with no grandfathered exceptions. This eliminated the last major loophole for pre-IPO restatements.
Comparison: China vs. International Practice
| Jurisdiction | Typical Grandfathering Period | Current Trend |
|---|---|---|
| United States (US GAAP) | 2-4 years for ASU changes | Stable; grandfathering still common for private companies |
| International (IFRS) | 1-3 years, depending on standard | Shortening for liability-based standards |
| China (CAS) | Historically 3-5 years; now 0-2 years | Nearly eliminated; only specific FTC zones still have transitional rules |
The MOF’s approach is now more stringent than most jurisdictions. Foreign executives should plan for zero transitional relief for any standard that takes effect after January 1, 2026.
Case Example: A US-China JV Facing the Closing Window
Scenario: A joint venture between a US pharmaceutical company and a Chinese manufacturer was established in 2019. The US parent used IFRS; the JV used a hybrid of IFRS and CAS, with a grandfathering exemption for the CAS Leases Standard (CAS 21). In 2024, the JV began planning for an eventual IPO on the Shenzhen ChiNext board. The auditor, a Big Four firm, informed management that the grandfathering for lease accounting had technically expired in 2023.
Outcome: The JV had to restate its 2021 and 2022 financial statements under full CAS 21. The cost of this restatement was approximately USD 1.2 million, including external advisory fees. The IPO was delayed by 9 months.
Lesson: Even if you believe your company qualifies for a historic grandfathering provision, the current regulatory environment will likely demand full compliance by the time you reach a liquidity event. The MOF has publicly stated that “no hidden grandfathering clauses exist” in any standard issued after 2020.
NEXT STEPS: 3 Decision-Path Recommendations
Given the above, here are three concrete actions you should take, ranked by urgency.
- Conduct an immediate gap analysis of your current accounting policies against the latest CAS standards (2023-2024 revisions). Focus on CAS 14 (Revenue), CAS 16 (Government Grants), and CAS 21 (Leases). If you are relying on any transitional provision that predates January 1, 2023, you are likely out of compliance. Engage a local CPA firm (preferably one of the Big Four or a “Top 10” Chinese firm) to perform this audit. Timeline: complete within 60 days.
- Document your “grandfathering history” for the MOF and CSRC. If your company used a specific exemption (e.g., the “Simplified CAS for FTZs”), you must prepare a formal reconciliation report. The MOF has the authority to levy fines of up to RMB 1 million (approx. $138,000) for “knowing misuse of expired transitional provisions.” Do not assume silence will protect you. Timeline: 30 days to gather documents, 6 months to file any voluntary disclosure if needed.
- Plan your budget for a “full CAS conversion” by 2027 at the latest. Even if your current structure allows a limited grandfathering (e.g., for Free Trade Zone entities), the deadline is fixed, and extensions are unlikely. Estimate that this conversion will cost 0.5% to 1.5% of your annual revenue, depending on the complexity of your operations. A mid-sized manufacturer with RMB 500 million ($69 million) in revenue should expect to spend RMB 2.5 to 7.5 million ($345,000 to $1.03 million) on systems, training, and audit costs.
In summary, while some historic grandfathering provisions still exist in very narrow contexts (e.g., FTZs), the MOF has effectively closed the door for new exemptions. Your compliance roadmap should assume zero transitional relief for any standard released after 2020. Act now to avoid the expensive restatement trap that has already caught over 2,000 companies in the past two years.
— China Gateway 360 —
