A foreign-invested Japanese company's real governance rules live in two places, its Articles of Incorporation (定款) and any separate shareholders' agreement, and only one of those two documents automatically binds the company itself. Getting the split wrong is the single most common governance mistake foreign investors make at incorporation, and fixing it later requires a shareholders' meeting resolution rather than a simple contract amendment. This guide covers what belongs in each document, how KK corporate organs and voting thresholds actually work, and which regulatory triggers apply once the company is operating.
KK vs. GK: Which Structure Fits Your Governance Needs?#
A Kabushiki Kaisha (KK) separates ownership from management through a shareholders' meeting and board of directors, and is the structure of choice for joint ventures or any company that expects outside investors. A Godo Kaisha (GK) has no separate board; its members manage directly, which suits a wholly-owned subsidiary with a single foreign parent and no governance complexity to design around.
| Feature | Kabushiki Kaisha (KK) | Godo Kaisha (GK) |
|---|---|---|
| English equivalent | Corporation / Co., Ltd. | LLC |
| Ownership | Shares (株式) | Membership interests (持分) |
| Governance | Shareholders' meeting + Board of Directors | Members (flexible) |
| Notarization | Required for Articles | Not required |
| Registration fee | ¥150,000+ | ¥60,000 |
| Stamp duty (paper) | ¥40,000 (waived if e-filed) | ¥40,000 (waived if e-filed) |
| Notary fee | ¥30,000-50,000 | N/A |
| Separate ownership & mgmt | Yes | No, members = managers |
| IPO potential | Yes | No |
| Market perception | Higher credibility | Lower, but acceptable |
| Best for | JVs, external investors, larger ops | Wholly-owned subsidiaries, simplicity |
Official Source: Companies Act (English)
What Actually Has to Be in the Articles of Incorporation?#
The Companies Act (会社法) sorts every Articles provision into one of three tiers, and only the first tier is non-negotiable.
+-----------------------------------------------------------------+
| MANDATORY (絶対的記載事項) |
| Missing = entire Articles VOID = company cannot exist |
+-------------------------------------------------------------------+
| - Company name (商号) |
| - Purpose / business objectives (目的) |
| - Head office location (本店の所在地) |
| - Capital contributed / shares at incorporation |
| - Names and addresses of incorporators (発起人) |
+-------------------------------------------------------------------+
| CONDITIONAL (相対的記載事項) |
| Only effective IF stated in Articles |
+-------------------------------------------------------------------+
| - Share transfer restrictions (譲渡制限) |
| - In-kind contributions (現物出資) |
| - Multiple share classes |
| - Pre-emptive rights |
+-------------------------------------------------------------------+
| VOLUNTARY (任意的記載事項) |
| Optional, but once included, legally binding |
+-------------------------------------------------------------------+
| - Number of directors / auditors |
| - Fiscal year-end date |
| - Director compensation caps |
| - Dividend distribution methods |
| - Special meeting procedures |
+---------------------------------------------------------------------+
Where Should Each Governance Protection Actually Go?
| Governance Goal | Where to Put It |
|---|---|
| Prevent majority shareholder from packing the board | Articles - fix number of directors |
| Require supermajority for major decisions | Articles - amend voting thresholds |
| Block unwanted third-party shareholders | Articles - share transfer restrictions |
| Define exit mechanisms (tag-along, drag-along) | Shareholders' Agreement + Articles |
| Set dividend policy | Articles (voluntary provision) |
| Non-compete / IP assignment | Shareholders' Agreement |
A shareholders' agreement alone is not sufficient for any protection you actually need enforced against the company. It binds only the parties who signed it; the company and any future shareholder are not bound unless the same protection is also written into the Articles. See our shareholders' agreement guide for how to structure the contract side once the Articles side is settled.
How Does Decision-Making Actually Flow Through a KK?#
+----------------------------------------------------------------+
| SHAREHOLDERS' MEETING (株主総会) |
| Supreme decision-making body |
| - Appoints/dismisses directors & auditors |
| - Amends Articles (2/3 special resolution) |
| - Approves mergers, capital changes, dividends |
+----------------------------------------------------------------+
| BOARD OF DIRECTORS (取締役会) |
| 3+ directors (mandatory if board exists) |
| - Makes important business decisions |
| - Supervises execution of duties |
| - Appoints Representative Director |
+----------------------------------------------------------------+
| REPRESENTATIVE DIRECTOR(S) (代表取締役) |
| - Authority to represent and bind the company |
| - Executes daily business operations |
| - At least 1 must be JP resident (practical req.) |
+----------------------------------------------------------------+
| STATUTORY AUDITOR (監査役, if applicable) |
| - Audits directors' conduct |
| - Mandatory for Large Companies (capital >= Y500M |
| or liabilities >= Y20B) |
+------------------------------------------------------------------+
What Vote Does Each Type of Decision Actually Require?
| Resolution Type | Quorum | Votes Required | Used For |
|---|---|---|---|
| Ordinary | Majority of voting rights present | Majority of present votes | Director appointment, financial statements |
| Special | Majority of voting rights present | 2/3 of present votes | Articles amendment, mergers, capital reduction |
| Super-special | 1/2 of all voting rights | 2/3 of present votes | Certain rare corporate actions |
For how these organs and thresholds change once a foreign parent is the sole shareholder rather than a joint-venture group, see our corporate governance for foreign-owned KKs guide.
What Are Directors Actually Liable For?#
A Japan KK director owes the company three distinct legal duties, and a breach of any of them can create personal financial liability, not just a governance black mark.
| Duty | Legal Basis | What It Means |
|---|---|---|
| 善管注意義務 (Duty of Care) | Companies Act Art. 330 / Civil Code Art. 644 | Act as a reasonably prudent manager |
| 忠実義務 (Duty of Loyalty) | Companies Act Art. 355 | No self-dealing; company interests first |
| Duty to Monitor | Companies Act Art. 362 | Directors must supervise each other |
What Happens If a Director Breaches One of These Duties?
| Risk | Mechanism |
|---|---|
| Breach of duty leads to company loss | Company can sue directors for damages |
| Shareholder derivative suit (株主代表訴訟) | Minority shareholders can sue on company's behalf |
| Competing interests without Board approval | Director personally liable for gains |
| D&O insurance | Formally regulated since the 2021 Companies Act amendment |
Japanese courts do recognize a form of business judgment protection for directors who made informed, reasonable decisions, but the scope is narrower than in common-law jurisdictions, so documenting the basis for a significant decision at the time it is made matters more in Japan than founders used to US or UK board practice tend to assume.
What Should a Shareholders' Agreement Actually Cover?#
| Clause Type | Purpose | Enforcement |
|---|---|---|
| Board composition | Reserve seats for each shareholder group | Contractual (back up with Articles) |
| Transfer restrictions | ROFR, lock-up periods | Contractual + Articles |
| Tag-along / Drag-along | Exit protection for minority/majority | Contractual |
| Deadlock resolution | Mediation, then arbitration, then buyout | Contractual |
| Information rights | Quarterly financials, board minutes | Contractual |
| Non-compete | Restrict founders from competing | Contractual (enforceability varies) |
| Dividend policy | Minimum distribution, reinvestment rules | Contractual + Articles |
A shareholders' meeting resolution that complies with the Companies Act and the Articles cannot be invalidated merely because it violates a shareholders' agreement provision. That is why every protection you actually need enforced against the company, not just against the other shareholders personally, has to be embedded in the Articles as well as the contract.
What Ongoing Regulatory Filings Does a Foreign-Invested KK Have?#
| Obligation | Authority | Frequency |
|---|---|---|
| Corporate registration changes | Legal Affairs Bureau (法務局) | Within 2 weeks of change |
| Annual shareholders' meeting | Internal | Within 3 months of FY-end |
| Financial statement approval | Shareholders' meeting | Annual |
| Corporate tax return | NTA / local tax office | Within 2 months of FY-end |
| JCT return | NTA | Annual / quarterly |
| Work rules (10+ employees) | Labour Standards Office | When established or changed |
Which Regulators Actually Get Involved, and When?
| Regulation | Authority | Trigger |
|---|---|---|
| FEFTA (外為法) | MOF + relevant ministries | Foreign investment in designated sectors |
| Anti-Monopoly Act | JFTC (公正取引委員会) | M&A above thresholds, see our JFTC pre-merger notification guide |
| Personal Information Protection Act | PPC (個人情報保護委員会) | Handling personal data |
| Labor Standards Act | Labour Standards Office | All employers |
| Corporate Governance Code | TSE / FSA | Listed companies (comply or explain) |
Does FEFTA Screening Apply to a Routine Incorporation?#
Only if the target sector is designated. FEFTA (外為法) screens a foreign investor acquiring shares in a Japanese company at the moment the sector question is answered, not before.
Foreign investor acquires shares in Japanese company
|
v
Is the sector designated? (Defense, telecom, energy, transport, etc.)
|
+-----+-----+
YES NO
| |
v v
Prior notification Post-transaction
to MOF required reporting only
(30 days before)
Since the 2020 FEFTA amendment, the prior-notification threshold for listed companies in designated sectors dropped from 10 percent to 1 percent of voting rights, a materially lower bar than most founders coming from other jurisdictions expect. See our FEFTA foreign investment screening guide for how the designated-sector list and the notification timeline work in practice.
Official Source: Ministry of Finance - FEFTA
For founders who want the Articles, the shareholders' agreement, and the ongoing filing calendar coordinated as one engagement rather than assembled from separate vendors, Aplash's tax and legal consulting service handles governance structuring alongside the incorporation itself.
Frequently Asked Questions#
Is a shareholders' agreement enough to protect a minority investor in a Japan KK, or do we need to amend the Articles too?
A shareholders' agreement alone is not enough for any protection that needs to bind the company itself. It only binds the parties who signed it, so a shareholders' meeting resolution that complies with the Companies Act and the Articles remains valid even if it breaches the agreement. Protections such as board composition, transfer restrictions, and dividend policy need to be written into the Articles as well as the contract.
Can a Japan KK director be held personally liable for a bad business decision?
Yes, if the decision breaches the duty of care, the duty of loyalty, or the duty to monitor under Companies Act Articles 330, 355, and 362. Japanese courts do recognize a form of business judgment protection for informed, reasonable decisions, but its scope is narrower than in common-law jurisdictions, so documenting the basis for a significant decision at the time it is made is worth doing even where it would not be standard practice at home.
Does every foreign investment in a Japan company trigger FEFTA prior notification?
No. FEFTA prior notification applies only where the target company operates in a ministry-designated sector such as defense, telecom, energy, or transport; other sectors require only a post-transaction report to the Bank of Japan. Since the 2020 amendment, the prior-notification threshold for listed companies in designated sectors is 1 percent of voting rights, down from the previous 10 percent.
Official References#
| Source | Link |
|---|---|
| Companies Act (EN) | japaneselawtranslation.go.jp |
| ICLG - Corp. Governance Japan 2025 | iclg.com |
| Chambers - Corp. Governance 2025 | practiceguides.chambers.com |
| TSE - Corporate Governance Code | jpx.co.jp |
| FEFTA (EN) | japaneselawtranslation.go.jp |
| Anti-Monopoly Act (EN) | japaneselawtranslation.go.jp |
This article is informational only and does not constitute legal, tax, or regulatory advice. Consult a qualified attorney (弁護士) or judicial scrivener (司法書士) before acting on the content. Last updated: August 2026.