Essential AML Merger Filing Checklist for Foreign Companies in China
An AML merger filing (反垄断经营者集中申报, fǎn lǒng duàn jīng yíng zhě jí zhōng shēn bào) is a mandatory pre-closing notification to SAMR (国家市场监督管理总局, guó jiā shì chǎng jiān dū guǎn lǐ zǒng jú) triggered when a transaction meets turnover thresholds. The dominant threshold: combined worldwide turnover exceeds RMB 1 billion and at least two parties each generate over RMB 400 million in China turnover. Since 2008, SAMR has reviewed 4,200+ filings, with an average 30-day Phase 1 review and penalties up to 10% of prior-year China turnover — often exceeding RMB 25 million.
1. Understanding the Thresholds That Trigger Your Filing Obligation
China’s AML sets two primary turnover thresholds for mandatory notification. Threshold A: Combined worldwide turnover of all parties exceeds RMB 1 billion (≈$140 million), and at least two parties each have China turnover above RMB 400 million. Threshold B: Combined China turnover of all parties exceeds RMB 2 billion (≈$280 million), and at least two parties each have China turnover above RMB 400 million.
If either threshold is met, the transaction cannot close until SAMR grants clearance or the statutory review period expires. A 2023 amendment introduced a “safe harbor” — no filing required if each party’s China market share in each relevant market is below 15% (horizontal) or 25% (vertical) — but this only applies to transactions below the turnover thresholds, not as an exemption from filing when thresholds are met.
Foreign companies often underestimate that joint ventures (合营企业, hé yíng qǐ yè) and indirect acquisitions (间接收购, jiàn jiē shōu gòu) through offshore holding structures also trigger filing obligations if the China-based targets or joint venture entities meet the revenue criteria. For example, a 2022 cross-border acquisition of a Chinese biotech firm with RMB 450 million in China revenue required a full filing even though the buyer was a Singaporean holding company with no direct China operations.
| Threshold Type | Worldwide Turnover (Combined) | China Turnover per Party (At Least 2 Parties) |
|---|---|---|
| Standard Threshold A | > RMB 1 billion | > RMB 400 million each |
| Standard Threshold B | N/A | > RMB 400 million each (Combined China turnover > RMB 2 billion) |
| Safe Harbor (Market Share) | Horizontal: < 15% each Vertical: < 25% each |
Only applies if thresholds not met |
2. Step-by-Step Preparation: Documents, Timelines, and Costs
Preparing an AML filing typically takes 6–12 weeks and requires a comprehensive submission. The core documents include:
- Filing application form with transaction details and party information
- Copies of transaction agreements (including offshore SPAs and JV contracts translated into Chinese)
- Audited financial statements for the most recent three years for all parties
- Market data reports covering relevant product and geographic markets, with market share calculations
- Competition analysis explaining why the transaction will not significantly impede market competition
The review process follows three phases: Phase 1 (30 calendar days) for initial review; Phase 2 (90 calendar days) for in-depth review if concerns arise; and Phase 3 (60 calendar days, extendable) for complex cases. Average review times in 2023 for unconditional approvals was 38 days, while cases requiring conditions averaged 187 days. Filing fees are officially nil — SAMR charges no fee for submission — but professional advisory costs (legal, economic, and translation) typically range from RMB 500,000 to RMB 2 million depending on transaction complexity.
3. Common Compliance Pitfalls and How to Avoid Them
Foreign companies commonly make three critical mistakes when preparing an AML filing. Here is how to identify and avoid each one.
Decision Framework: If your combined worldwide turnover exceeds RMB 1 billion and at least two parties have China turnover above RMB 400 million, prepare a full filing. If your combined China turnover exceeds RMB 2 billion with the same per-party threshold, also prepare a full filing. If both thresholds are unmet but one party’s China market share exceeds 15% (horizontal) or 25% (vertical) in a relevant market, seek legal advice — SAMR may still investigate on its own initiative under Article 26 of the AML.
NEXT STEPS: Your Three-Point Action Plan
- Run a threshold test now. Use our AML Threshold Calculator to determine if your transaction triggers a filing obligation within 10 minutes.
- Prepare your market data package. Download the Market Data Preparation Guide for AML Filings to structure revenue, share, and geographic data in SAMR-approved format.
- Engage an AML counsel early. Contact our AML Filing Advisory Team at least 10 weeks before your planned signing date to avoid last-minute delays.
— China Gateway 360 —
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Official Sources
- State Administration for Market Regulation: 2026 registration forms and submission-material standards
- Ministry of Commerce and SAMR: Measures for Foreign Investment Information Reporting
- State Administration for Market Regulation: Company Law of the People’s Republic of China
- National Development and Reform Commission: 2024 foreign-investment negative list
