The GK Is Cheaper at Setup - But Sometimes the Costs Show Up Later
Many foreign businesses incorporate a GK (Godo Kaisha (合同会社)) when entering Japan. The appeal is clear: lower registration fees, simpler governance, and faster setup compared to a KK (Kabushiki Kaisha (株式会社)).
Over time, some of those businesses discover that the GK structure creates friction they did not anticipate. Banks ask harder questions. Japanese counterparties hesitate. Regulatory license applications require a KK. Employees and prospective hires are less familiar with the entity type.
The practical question at that point is: can we convert? And if so, what does it involve?
Japan company law provides a formal mechanism for converting a GK to a KK (and vice versa, though the reverse is uncommon). It is called soshiki henkou (組織変更), or organizational transformation. The entity's identity is preserved through the conversion: it is the same legal person before and after, with a changed corporate form.
This guide explains when conversion makes sense, how the process works, what it costs, and what foreign-owned GK operators should know before starting.
Why Foreign-Owned GKs Consider Converting to KK
The reasons businesses seek conversion generally fall into four categories:
Banking Access
This is the most common trigger. Japanese megabanks and regional banks apply different informal standards to KK and GK entities. A KK is recognized as the standard, credibility-intensive form of Japanese company. A GK is perceived as a lighter structure, often associated with smaller or less established operations.
In practice: GKs operated by foreign owners with no Japan-resident principals face higher rejection rates for corporate bank account applications and more frequent requests for additional documentation than equivalent KKs. If the business has grown and banking is becoming a constraint, conversion to KK can be part of the solution.
Note: conversion alone does not guarantee improved banking outcomes. The bank account challenges faced by foreign-owned entities relate to multiple factors (residency of representatives, physical presence, operating history). Conversion addresses the entity-type perception factor, not the others.
Regulatory Licensing
Several Japanese regulatory licenses are available to KK but not GK, or are practically easier to obtain as a KK:
(a) Customs Brokerage (通関業者) license: the customs authority has historically shown preference for KK applicants in practice
(b) Financial instruments business registration (金融商品取引業): requires a stock company (株式会社) in most cases
(c) Some licensed professional service frameworks require a 株式会社
If the business's next steps require a license that is KK-specific or KK-preferred, conversion is the structurally correct move.
Equity Financing and Investor Readiness
A KK issues shares (株式) that can be transferred to new investors through established mechanisms (share issuance, secondary transfer). A GK issues membership interests (持分 (mochibun)) which are structurally different and have no publicly recognized trading convention.
Japanese venture capital funds and private equity investors are structured to invest in KK (株式会社) entities. Institutional investors generally do not invest in GK structures because the governance and exit mechanics are less standardized.
If the business is planning a capital raise, whether from Japanese or international investors, conversion to KK ahead of the fundraising simplifies investor due diligence and structuring.
Credibility and Counterparty Perception
Japanese enterprises, government agencies, and larger commercial counterparties are more comfortable with a KK. Procurement frameworks sometimes informally require a 株式会社. Employment candidates, particularly those from established Japanese companies, may factor entity type into their assessment of an employer's stability.
This is a softer factor, but for businesses that have scaled their Japan operations and are seeking enterprise clients or government contracts, upgrading to a KK can remove an unnecessary friction point.
The Legal Mechanism: 組織変更 Under the Companies Act
Conversion of a GK to a KK is governed by the Companies Act (Companies Act (会社法)), specifically the provisions on 組織変更.
The key features of the 組織変更 mechanism:
Entity continuity: The converting entity is the same legal person before and after conversion. Contracts, licenses, bank accounts, and registrations held by the GK carry over to the KK without requiring re-execution or re-registration as a new party.
Important caveat: While this is the legal rule, counterparties including banks may treat the conversion as an opportunity to re-examine the relationship. Banks in particular may require updated KYC documentation and re-approval processes even when the entity identity is legally continuous.
Unanimous member approval: A GK's conversion requires the consent of all members (社員 (shain)). Unlike a KK special resolution, which requires a two-thirds supermajority of voting shareholders, the GK conversion requires unanimous agreement. For a GK with a single foreign corporate member, this means a formal corporate decision (board resolution or equivalent) from the parent entity.
New 定款 (teikan): The conversion produces a new set of articles of incorporation (定款) in KK form. The new 定款 must satisfy all mandatory items for a KK under the Companies Act (会社法第27条), including: company name, purpose, principal office location, total number of authorized shares, and capital amount.
Share issuance: Upon conversion, the GK's membership interests become shares (株式). The number of shares and the capital allocation must be specified in the conversion plan (組織変更計画).
Creditor protection: The converting company must follow the creditor protection procedure: notifying individual creditors and publishing notice of the planned conversion in the Official Gazette (官報). Creditors have the right to object within a specified period (at least one month from publication). If a creditor objects and the company does not satisfy or collateralize the claim, the conversion cannot proceed.
Step-by-Step Process
Step 1: Confirm unanimous member consent
For a single-member GK with a foreign corporate parent, prepare and execute a formal resolution of the parent entity authorizing the conversion. The resolution should specify the key terms of the conversion plan.
Step 2: Prepare the conversion plan (組織変更計画)
The conversion plan is a formal document specifying:
(a) The new company name in KK form (if changing)
(b) The purposes (目的) of the converted KK
(c) The total number of authorized shares (発行可能株式総数)
(d) The number of shares to be issued upon conversion and the allocation to existing members
(e) The capital amount and capital reserve of the converted KK
(f) Director appointments for the KK (since GK does not have directors in the KK sense)
Step 3: Directors appointment
A KK requires at least one director. Non-public KKs (非公開会社, which most foreign-owned KKs are) require at least one director; appointment of a statutory auditor (監査役) may be required depending on governance structure. Director appointments take effect at the time of the conversion registration.
Step 4: Creditor notification and publication
Notify known creditors individually and publish notice in the Official Gazette (官報). The notice must include the fact of planned conversion, the outline of the conversion plan, and information about where creditors may object. The one-month waiting period begins from the later of individual notification or publication date.
Step 5: Register the conversion
After the creditor objection period closes (and any creditor claims have been addressed), file the conversion registration at the Legal Affairs Bureau. Two registrations are filed simultaneously:
(a) Dissolution of the GK (in the GK registry entry)
(b) Incorporation of the KK (as a new KK registry entry at the same registration number base)
Note: despite the use of "dissolution" and "incorporation" language in the registration filings, the entity is legally continuous. The GK registration is superseded by the KK registration; they are not treated as two separate events for contract and liability purposes.
Costs and Timeline
Registration fees (登録免許税):
The conversion requires payment of registration tax for the KK registration. The rate is the higher of:
(a) 0.7% of stated capital amount, or
(b) ¥60,000 minimum
For a GK with capital of ¥1,000,000 (¥1 million), the 0.7% calculation yields ¥7,000, below the minimum, so the minimum of ¥60,000 applies.
For a GK with capital of ¥10,000,000 (¥10 million), the 0.7% calculation yields ¥70,000, above the minimum, so ¥70,000 applies.
Additionally, the GK dissolution registration has a separate fee of ¥9,000.
Professional fees:
A judicial scrivener (司法書士 (shihoshoshi)) handles the registry filings. Professional fees for the conversion filing typically range from ¥80,000 to ¥150,000 depending on complexity. This is a rough market range; fees vary by scrivener and by how much of the preparation work (articles drafting, plan preparation) is done internally vs. delegated to the scrivener.
Official Gazette publication costs approximately ¥30,000-40,000 for a standard notice.
Timeline:
(a) Preparation of conversion plan and documents: 2-4 weeks depending on internal decision process and translation requirements
(b) Creditor notification and one-month waiting period: minimum 4-5 weeks from publication date
(c) Registration filing and processing at the Legal Affairs Bureau: approximately 1-2 weeks from filing
Total timeline: approximately 2-3 months from internal decision to completion of registry entries
What Carries Over and What Does Not
Carries over automatically (entity continuity):
- Contracts entered in the name of the GK
- Tax registration (TIN, consumption tax registration)
- Customs importer registration and customs bonded warehouse permits
- Most government license and registration entries (subject to notification obligations for specific license types)
Requires notification or re-registration:
- Social insurance and labor insurance registrations: must notify the relevant offices (年金事務所, ハローワーク) of the entity type change
- Bank accounts: the bank must be notified; accounts are not automatically updated and KYC re-verification is common
- Lease agreements: landlords may require consent or re-execution depending on the contract terms
- Specific regulatory licenses: some license types require proactive notification of the supervising ministry when a registered entity changes its corporate form
Practical note on bank accounts: Banks treat 組織変更 as a material change that triggers a review. Budget time for bank-side re-verification as a separate process from the registry work. Do not assume bank accounts will operate without interruption through the conversion period.
Tax Considerations
The 組織変更 from GK to KK is generally treated as a tax-neutral event for Japanese corporate income tax purposes, provided the conversion follows the statutory process. There is no deemed disposal of assets or realization of gains simply because the corporate form changes.
Key tax filings:
(a) Notify the relevant tax office (税務署) of the entity form change
(b) The fiscal year of the GK may or may not terminate at conversion depending on the conversion date relative to the existing fiscal year end; a fiscal year change should be considered if the conversion date does not align with the intended KK fiscal year
(c) Consumption tax (消費税 (shohizei)): consumption tax registration status transfers; no new registration is required if the GK was already registered
Tax advice specific to the conversion should be obtained from a tax accountant (税理士) familiar with corporate restructuring. The above is an orientation, not tax advice.
When Conversion Is Not the Right Move
Conversion is not always the optimal solution:
If the banking problem is the primary concern: Conversion to KK may not move the bank's decision significantly if the underlying issues (no Japan-resident directors, virtual office, no operating history) remain unresolved. Acquiring an existing KK with an active bank account may produce faster results.
If the GK structure is working: If the GK is functioning well for the business - no banking friction, no license requirements that mandate KK, counterparties are satisfied - there is no structural reason to incur the cost and disruption of conversion. Not all GKs need to be KKs.
If dissolution is planned within 12-18 months: Conversion costs and creditor procedure time are not recovered over a short remaining operating period. If exit is approaching, evaluate whether conversion is necessary for the exit structure itself.
Summary
GK-to-KK conversion (組織変更) is a legally clean mechanism that preserves entity continuity while changing corporate form, but it involves time, cost, and counterparty coordination that should not be underestimated.
The key points:
- Unanimous member consent is required (not a simple majority).
- A one-month creditor notification waiting period is mandatory; the process cannot be rushed below approximately 2-3 months total.
- Registration tax is calculated at 0.7% of capital (minimum ¥60,000), plus GK dissolution fee and professional fees.
- Entity continuity means contracts carry over, but banks and some counterparties will treat the conversion as a change event requiring re-verification.
- If the primary motivation is banking, address the underlying factors (residency, physical presence) alongside the conversion.
This article is an informational overview, not legal or tax advice for any specific situation.