Minimum Capital for a KK in Japan: What You Actually Need

Japan lets you incorporate a KK with very little capital.

That fact is technically true and practically dangerous if you stop reading there.

Here, capital means the money formally put into the company at setup. It is not the same thing as revenue, profit, founder salary, or the one-time fees you pay to register the company.

The legal minimum is not the operating minimum. For a founder building in Japan, capital has to satisfy more than company law. It affects banking, credibility, runway, and whether the business plan looks serious.

If you are still choosing entity type, start with [[04-kk-vs-gk|KK vs. GK: Which Company Type Should You Choose?]]. If the capital decision is tied to a visa plan, read the current immigration guide for that path. If you are budgeting for registration costs, see [[05-how-to-incorporate-a-company-in-japan-step-by-step|How to Incorporate a Company in Japan (Step by Step)]].

The legal minimum is not the real minimum

A KK can be incorporated with nominal capital.

That old “¥1 company” idea still exists in the sense that Japanese company law does not require the old high minimum. But a ¥1 KK is not a serious founder vehicle for most foreign entrepreneurs.

It may be legal. It is not bankable. It is not a strong signal of operating readiness. It usually does not help the founder explain why the company deserves trust.

The real question is this:

How much capital does the company need to look credible and operate safely for the first year?

For most founders, the answer is not a symbolic amount. It is enough runway to support the plan.

Visa rules are a separate question

Do not use company formation capital as a proxy for visa eligibility.

Immigration has its own requirements, and those requirements can change. If your Business Manager plan depends on the company, use the visa-specific guide for the current rule set instead of relying on a general company-capital article.

A company with modest capital can still be weak if:

• the business plan is vague
• the address is not credible
• the founder cannot explain the market
• the capital source is unclear
• the runway does not match the plan
• the company has no path to revenue

A company with solid capital and a clear operating plan is stronger than a company that barely meets a number and explains nothing.

What capital actually does

Capital is not frozen forever.

Once the company is formed, it becomes company money and can be used for legitimate business expenses.

Common uses include:

• office deposit and rent
• incorporation costs
• professional fees
• accounting and legal support
• software
• equipment
• marketing
• salaries
• business travel
• inventory
• website and systems
• insurance and compliance costs

The mistake is thinking capital exists only to impress a bank or an immigration officer.

Capital is the fuel for the company machine. Spend it deliberately and document it clearly.

Capital is runway, not a trophy

A founder who thinks only in terms of minimums usually asks the wrong question.

The better question is: how long does this capital let the company operate before revenue catches up?

If your company has enough capital to cover setup but not enough to survive a few months of real operating costs, the company is underfunded even if it is legally formed.

A simple runway model helps.

Estimate:

• office cost
• founder salary, if any
• social insurance
• accounting
• software
• marketing
• professional support
• a reserve for surprises

Do not copy someone else’s numbers blindly.

The point is not a perfect spreadsheet. The point is to connect capital to monthly survival.

Banks care about the story, not just the number

Banks look for risk.

A fresh foreign-owned company already carries friction: new entity, limited Japan history, sometimes a foreign director, sometimes an unclear address, sometimes no Japanese-language operating record.

Low capital makes the bank’s job easier in the wrong direction: reject or delay.

Capital will not guarantee a bank account, but weak capital can make the application harder.

If banking is a near-term goal, read [[11-business-bank-accounts|Business Bank Accounts and Financial Setup in Japan]] after this.

How much should you actually put in?

Use the business need as the filter.

If you do not need a visa-linked capital standard

You may not need a huge paid-up capital amount. But you still need enough to support credibility and operations.

For a small consulting or software company, a lower amount can work if the business has immediate revenue and low expenses.

If you do need a visa-linked standard

Follow the current immigration rules for that visa path and build the source-of-funds explanation, runway model, and supporting documents around that requirement.

If you plan to hire or lease serious office space

Raise the capital above the minimum.

Hiring and office commitments create fixed costs. Thin capitalization makes the company fragile.

If you want investor or client credibility

A token-capital KK sends the wrong signal.

Investors, banks, and enterprise clients may not care about the legal minimum. They care whether the company looks durable.

Show the source of funds

Founders should be ready to show where capital came from.

Savings, founder investment, parent-company funding, or investor funds should be documented.

Keep records such as:

• bank statements
• remittance records
• founder loan or investment documents
• capital payment evidence
• currency conversion records if relevant

A clean money trail makes the application and the audit trail easier.

Do not confuse capital with founder salary

Founder salary is separate.

If you pay yourself from the company, that affects payroll, withholding, social insurance, runway, and tax planning.

A founder who deposits capital and immediately pays it out as salary may weaken the company unless the plan supports it.

For salary structure, see the tax and payroll guides in this cluster.

A simple checklist

Use this before you set the amount:

• decide whether the company needs to support a visa application
• build a 12-month operating budget
• prepare source-of-funds documentation
• avoid token capital unless there is a clear reason
• keep capital spending tied to business purposes
• preserve bank and remittance records
• align capital, office, banking, and operating plans

Bottom line

The legal minimum capital for a KK is not the founder minimum.

For a foreign founder, capital is evidence. It shows seriousness, runway, and operational capacity.

Use enough to make the company credible, then manage it like the fuel tank it is.