Taiwan Merger Filing Thresholds 2026, What Foreign Buyers Need to Know

The Taiwan merger filing thresholds changed materially in 2026 after the Taiwan Fair Trade Commission (TFTC) raised its turnover and sales triggers for the first time in several years. For foreign acquirers evaluating a Taiwan M&A 2026 transaction, whether a full buyout, a controlling-stake acquisition, or a financial-sector consolidation, the revised numbers redefine when a mandatory notification is triggered. This guide sets out every threshold, explains the financial-sector carve-outs and the interplay with securities-reporting rules, and provides a practical structuring playbook so deal teams can plan timing and compliance with confidence.

Executive Summary and Key Takeaways

The 2026 TFTC amendments raise the headline turnover thresholds that determine whether a merger control Taiwan filing is mandatory. Foreign buyers should note the following headline points:

• Non-financial enterprises: the combined turnover threshold rose from NTD 15 billion to NTD 20 billion.
• Financial institutions: the combined turnover threshold rose from NTD 30 billion to NTD 40 billion.
• Lower individual-party sales threshold: increased from NTD 2 billion to NTD 3 billion for the other party to the merger.
• Market-share filing triggers remain in force: a one-quarter share of the relevant market, or combined one-third market share between parties, still triggers a filing regardless of turnover.
• Notification is mandatory, not voluntary: parties must not complete the transaction before receiving TFTC clearance when thresholds are met.
• Financial holding companies face parallel approvals: the Financial Supervisory Commission (FSC) may require separate approval depending on the investment method and deal structure.
• Public-company share acquisitions carry separate securities-reporting obligations under TWSE rules, including a reporting deadline when crossing the 10-percent shareholding threshold.
• Post-deal tax and transfer-pricing risks must be mapped immediately, related-party pricing, thin capitalisation, and deemed dividends are common traps for foreign buyers.

Why the 2026 Changes Matter for Foreign Buyers

The TFTC’s decision to raise the Taiwan merger filing thresholds reflects several years of GDP growth and the regulator’s desire to reduce the administrative burden on routine, non-problematic transactions. Before the amendment, many mid-market deals, particularly in the technology and manufacturing sectors, triggered filings even though they posed no realistic competition concerns. The threshold increases allow the TFTC to concentrate its resources on transactions that genuinely affect market structure.

For foreign buyers, the practical consequence is two-fold. First, some transactions that previously required notification will now fall below the line, shortening deal timelines and reducing compliance costs. Industry observers expect that a meaningful proportion of inbound acquisitions in the NTD 15–20 billion combined-turnover range will be freed from the filing obligation entirely. Second, the 2026 amendments introduced clarified guidance on financial-sector deals, making it essential for buyers of banks, insurance companies, and financial holding companies to reassess their notification analysis. Transactions in the Taiwan merger control 2026 framework now require close attention to both the revised numbers and the new structuring considerations.

What Changed in 2026: Exact TFTC Merger Thresholds and Scope

Headline turnover and asset thresholds, non-financial versus financial

The TFTC’s Disposal Directions on Merger Filing set two tiers of turnover thresholds. The first tier applies to enterprises generally (non-financial businesses), and the second tier applies to financial institutions, which have historically operated under higher thresholds because of their larger balance sheets and revenue volumes. The 2026 amendments raised both tiers simultaneously.

Both the upper combined threshold and the lower individual-party threshold must be assessed. A filing obligation arises when either (a) the parties’ combined turnover exceeds the applicable combined threshold and at least one other party’s individual turnover exceeds the NTD 3 billion floor, or (b) the market-share trigger is met. In practice, deal teams must run both tests before concluding that no notification is needed under the updated TFTC merger thresholds.

Lower sales thresholds, understanding the NTD 3 billion floor

The increase in the lower individual-party threshold from NTD 2 billion to NTD 3 billion is arguably the change with the broadest impact. Many inbound acquisitions involve a foreign buyer with substantial global revenues acquiring a mid-size Taiwanese target whose sales fall in the NTD 2–3 billion range. Under the old rules, these deals required notification. Under the 2026 rules, the target’s Taiwan sales must exceed NTD 3 billion before the turnover test is satisfied, which will exempt a significant tranche of transactions.

Market-share rules, still relevant in 2026

The TFTC elected not to change the market-share filing triggers. Where any participating enterprise holds at least one-quarter of the relevant market, or where the combined market share of the merging parties reaches one-third, a filing obligation is triggered irrespective of the parties’ turnover. This means that even transactions falling below the turnover thresholds may still require a Taiwan merger notification if the parties enjoy significant positions in a narrowly defined product or geographic market.

Threshold math, global sales versus Taiwan sales

Turnover for TFTC filing purposes is calculated based on the most recent fiscal year’s sales revenue of each party, including all companies in the same corporate group. For foreign buyers, this means that global consolidated sales are relevant to determine whether the combined threshold is crossed, while the target’s Taiwan-sourced sales figure is the key metric for the individual-party test. Audited financial statements and consistent currency-conversion methodology, using the TFTC’s specified exchange-rate approach, are required.

Who Must Notify: Entities, Share Thresholds and Foreign Buyer Tests

Public company share acquisitions and securities reporting

Foreign investment review Taiwan rules impose separate obligations when the target is a TWSE- or TPEx-listed company. Under TWSE Corporate Governance Center guidance, an acquirer crossing the 10-percent shareholding threshold in a public company must file a large-shareholding report within prescribed deadlines. Subsequent acquisitions crossing additional percentage thresholds (including the 5-percent incremental reporting points) trigger further disclosure. These securities-reporting obligations run in parallel with, and are independent of, the TFTC merger notification requirement. A foreign buyer must therefore track both compliance streams simultaneously.

Indirect acquisitions and control tests

The Taiwan Fair Trade Act captures not only direct share purchases but also mergers, consolidations, asset acquisitions, business transfers, and the assumption of another enterprise’s operations through contract, lease, or mandate. A deemed acquisition of control, for example, through board appointment rights or veto powers, may also trigger the filing obligation even if formal shareholding falls below the percentage typically associated with control. Foreign PE fund structures that use holding vehicles or nominee arrangements must ensure each layer of the acquisition chain is analysed for TFTC purposes.

Special notification rules for financial institutions

Financial institutions, banks, insurance companies, securities firms, and financial holding companies, are subject to the higher NTD 40 billion combined threshold, but they must also navigate parallel approval requirements from the FSC. In many cases, the FSC’s separate review under the Financial Holding Company Act or the Banking Act must be obtained alongside or even before the TFTC notification. The 2026 TFTC amendments clarified how investment methods for financial holding companies should be assessed, an issue explored in detail in the next section.

Financial Sector and Financial Holding Companies: Special Rules

FSC and TFTC, the interplay of approvals

Acquiring a regulated financial institution in Taiwan requires engagement with two authorities. The TFTC assesses competition effects under merger control Taiwan rules, while the FSC evaluates prudential and regulatory-fitness criteria. These reviews can run concurrently, but the FSC often expects to be consulted first, particularly where the acquirer is a foreign financial institution seeking to establish or expand its presence. Early coordination between the two filing tracks is critical to avoid delays that can extend the overall timetable by months.

Investment methods and limits for financial holding companies

The 2026 amendments addressed a longstanding ambiguity regarding how financial holding companies (FHCs) may invest in subsidiaries and affiliated enterprises. Under the Financial Holding Company Act, FHCs are generally restricted to investing through prescribed methods, direct equity investments, establishment of subsidiaries, or acquisition of shares in existing financial institutions. The updated TFTC guidance clarified that FHCs using different investment methods (for example, indirect acquisition via an intermediate SPV versus direct subscription for new shares) may face different filing obligations. Industry observers expect that this clarification will prompt FHCs to review their standard acquisition playbooks and choose structures that optimize both regulatory-approval timing and filing costs.

Structuring examples, asset deal versus share deal

In the financial sector, the choice between an asset deal and a share deal has implications for both the TFTC and the FSC. A share acquisition that crosses the turnover thresholds clearly triggers a TFTC filing, but an asset deal, acquiring a specific loan portfolio or business division, may fall outside the merger-control definition if no entity-level control changes hands. The likely practical effect, however, is that the FSC will require approval for material asset transfers involving licensed activities regardless of the TFTC position, so structuring solely to avoid the TFTC filing may not save time if the FSC review is the longer critical path.

Timing, Pre-Notification and the Review Timeline

Can parties close before notification?

No. Where the Taiwan merger filing thresholds are met, the merger control regime operates on a suspensory basis. Parties must file with the TFTC and await clearance before completing the transaction. Closing before clearance constitutes a violation of the Taiwan Fair Trade Act and may result in administrative penalties, required divestiture, or other remedies. This suspensory requirement means that the TFTC review period must be factored directly into the deal’s signing-to-closing timeline.

Typical TFTC review windows

The TFTC’s standard review period is 30 working days from acceptance of a complete filing. If the TFTC determines that a more detailed investigation is necessary, it may extend the review by up to 60 additional working days. In straightforward cases with no competition concerns, clearance is typically granted within the initial 30-working-day window. Complex cases, particularly those involving concentrated markets, significant horizontal overlaps, or financial-sector targets, should budget for the full 90-working-day envelope.

Pre-notification meetings, strongly recommended

The TFTC welcomes informal, pre-notification discussions. These meetings allow the filing party to outline the transaction structure, identify potential competition issues in advance, and confirm the scope of information required in the formal submission. For large or complex deals, especially those in the financial sector or involving novel foreign-investment structures, a pre-notification session can significantly reduce the risk of the TFTC issuing supplementary information requests that restart the review clock. Early indications suggest that the TFTC has been increasingly receptive to pre-notification engagement since the 2026 amendments took effect.

Structuring to Avoid or Manage Taiwan Merger Notifications, A Practical Playbook

Common structuring levers

Deal teams frequently evaluate the following approaches when a transaction sits near the TFTC merger thresholds:

• Step acquisitions. Acquiring an initial non-controlling stake below the threshold triggers, followed by a second-step acquisition once integration planning is complete. Each step is assessed independently, but parties must ensure that a pre-existing plan to acquire control in two steps is not treated as a single notifiable merger by the TFTC.
• Carve-outs and ring-fencing. Splitting a transaction so that certain business units or geographic segments are excluded can reduce the turnover attributable to the merging parties. This requires genuine commercial separation, not merely contractual labelling.
• Joint ventures versus full acquisitions. Structuring a deal as a joint venture, where both parties contribute assets and share control, may change the notification analysis, though joint ventures that function as concentrations are still caught by the Fair Trade Act.

Pitfalls and enforcement risk

The TFTC has demonstrated a willingness to look through artificial structures designed solely to circumvent filing obligations. Transactions that are economically a single acquisition but documented as separate steps without genuine commercial rationale will likely be treated as a single notifiable merger. Penalties for gun-jumping, completing a merger before clearance, can include fines, mandatory unwinding, and reputational damage that affects future foreign investment review Taiwan interactions.

Worked example, threshold math in practice

If the same target’s Taiwan turnover were NTD 2.8 billion, the individual-party threshold (NTD 3 billion) would not be met, and no TFTC filing would be required on turnover grounds alone, though the market-share test must still be checked.

Post-Deal Tax and Transfer-Pricing Risks in Taiwan, Practical Fixes

Common traps after acquisition

Foreign buyers often underestimate the post-deal tax risks Taiwan transactions carry. The most frequent issues include:

• Related-party transfer pricing. Once the target becomes part of the foreign buyer’s group, all intercompany transactions, management fees, royalties, procurement, and service charges, must be priced at arm’s length under Taiwan’s transfer-pricing rules. The Taiwan tax authority actively audits post-acquisition TP arrangements.
• Intangible transfers. Restructurings that shift IP, customer relationships, or brand rights out of the Taiwan entity can trigger taxable deemed income and withholding obligations.
• Thin capitalisation. Debt-push-down structures used to finance the acquisition may fall foul of Taiwan’s thin-capitalisation rules, limiting interest deductions and increasing the effective tax cost of the deal.
• Deemed dividends. Certain asset distributions or capital reductions following an acquisition may be recharacterised as deemed dividends subject to withholding tax at 21 percent.

Immediate tax filing and reporting obligations

The change-of-control event itself triggers several reporting requirements, including updating the Taiwan entity’s tax registrations, notifying the tax authority of changes to beneficial ownership, and, where the target holds land or buildings, potentially reassessing land-value increment tax. Failure to report promptly can result in penalties and interest on any underreported tax liabilities.

Mitigation, post-acquisition TP studies and APA considerations

Best practice for foreign buyers is to commission a contemporaneous transfer-pricing study within the first fiscal year following completion, covering all material intercompany transactions. For high-value arrangements, particularly royalty or management-fee flows, an Advance Pricing Arrangement (APA) with the Taiwan tax authority provides certainty and reduces audit risk. Given that Taiwan has bilateral APA processes with several major jurisdictions, PE sponsors and multinational strategics with established fund formation structures should evaluate APAs early in the post-deal integration plan.

Practical Checklist and Decision Tree

Use the following checklist to determine whether a Taiwan merger notification is required and to coordinate the legal, finance, and tax work streams.

1. Calculate combined global turnover of all parties to the transaction using audited figures for the most recent fiscal year.
2. Calculate the Taiwan turnover of each other party individually.
3. Apply the turnover test: Does the combined turnover exceed NTD 20 billion (non-financial) or NTD 40 billion (financial)? Does any individual other party exceed NTD 3 billion in Taiwan sales?
4. Apply the market-share test: Does any single party hold ≥ 25% of the relevant market, or do the parties combined hold ≥ 33.3%?
5. If either test is met → mandatory TFTC filing required. Do not close before clearance.
6. If the target is a listed company → run parallel TWSE/TPEx large-shareholding reporting obligations.
7. If the target is a financial institution → initiate FSC pre-consultation and prepare for parallel regulatory approval.
8. Engage Taiwan counsel for pre-notification meeting with the TFTC at least 4–6 weeks before the planned filing date.
9. Commission post-deal TP study and assess thin-capitalisation, deemed-dividend, and intangible-transfer exposures during due diligence.
10. Build the TFTC review window (30–90 working days) into the signing-to-closing timeline in the SPA.

For a simplified decision-tree version of this checklist, suitable for board presentations and deal-committee briefings, readers can contact the Global Law Experts lawyer directory to connect with Taiwan M&A counsel who can provide a tailored assessment.

Conclusion and Next Steps

The 2026 revisions to the Taiwan merger filing thresholds represent the most significant recalibration of Taiwan’s merger control regime in recent years. Foreign buyers who update their notification analysis, account for the financial-sector special rules, and integrate post-deal tax planning into their transaction timelines will be well positioned to execute Taiwan M&A 2026 transactions efficiently and compliantly. For further background on the broader regulatory framework, see the detailed overview in our Taiwan merger control 2026 guide for foreign buyers.

Sources

1. Taiwan Fair Trade Commission (TFTC), Disposal Directions and Guidelines
2. Lee & Li, TFTC Amendments Newsletter
3. Lexology, Summary of Proposed Threshold Changes
4. ICLG, Merger Control 2026: Taiwan
5. Chambers Global Practice Guides, Merger Control Taiwan
6. TWSE Corporate Governance Center, Large Shareholding Reporting Guidance
7. Global Law Experts, Taiwan Merger Control 2026: Foreign Buyers
8. Legal 500, Taiwan Merger Control Guide