Japan continues to attract global executives, entrepreneurs, and high-net-worth investors. But cross-border tax problems often arise not from obvious transactions, but from seemingly ordinary activities: answering emails during a temporary stay in Japan, renting a Tokyo apartment to a corporate tenant, or selling a luxury condominium after moving overseas.
In each case, assumptions that may seem reasonable internationally can produce unexpected Japanese tax liabilities.
For foreign executives and property investors, three rules deserve particular attention.
1. Your Salary Is Paid Overseas — But Japan May Still Tax It
The “Foreign-Paid Salary” Trap
Suppose you live outside Japan but return for several weeks to attend meetings, supervise a Japanese business, or work remotely for your overseas employer.
Your salary continues to be:
- paid by a foreign company;
- deposited into an overseas bank account; and
- administered entirely outside Japan.
It is easy to conclude that the salary should therefore remain outside the Japanese tax system.
That conclusion can be wrong.
For Japanese income tax purposes, employment income may constitute Japan-source income when the underlying work is physically performed in Japan. The location of the bank account or payroll function is not, by itself, decisive. The National Tax Agency specifically identifies remuneration for work performed in Japan as domestic-source income of a non-resident.
This creates a particularly important issue where the salary is paid overseas and therefore no Japanese payroll withholding occurs.
In certain cases, the non-resident must file a quasi-final tax return and pay Japanese income tax and Special Income Tax for Reconstruction at 20.42% on the relevant employment income. The NTA specifically illustrates this treatment for foreign-paid salary attributable to work performed in Japan.
“But I Was in Japan for Less Than 183 Days”
This is one of the most common misunderstandings in international tax.
The so-called 183-day rule is not simply a rule saying that anyone staying fewer than 183 days is tax-free.
Treaty protection generally depends on multiple conditions. The NTA notes, for example, that treaty relief may need to be considered where the individual stays in Japan for 183 days or less and the remuneration is not paid by an employer in Japan and is not borne by the employer’s permanent establishment in Japan. The precise wording must be checked under the applicable tax treaty.
For multinational executives, secondees and business owners, questions such as the following can therefore become critical:
- Which entity is the real or economic employer?
- Is a Japanese subsidiary bearing the compensation cost?
- Is there a Japanese permanent establishment?
- How many actual workdays were performed in Japan?
- Does the relevant tax treaty provide an exemption?
- Were treaty procedures completed correctly?
A short stay does not automatically mean a tax-free stay.
Practical Risk
The danger is often not deliberate non-compliance.
It is that no Japanese company withholds tax, the overseas payroll department assumes Japan has no taxing right, and the executive does not realize that a Japanese filing obligation may have arisen.
By the time the issue is discovered, the individual may already have left Japan.
For internationally mobile executives, Japanese tax exposure should therefore be reviewed before the business trip or assignment begins — not after the tax authority raises the question.
2. Owning a Tokyo Apartment as a Non-Resident? Your Tenant May Have to Withhold 20.42%
The Hidden Withholding Rule for Overseas Landlords
Japanese real estate is increasingly held by individuals who later move overseas or who have always lived outside Japan.
Assume you are a non-resident landlord who owns an apartment in Tokyo and receives JPY 800,000 per month in rent.
You may expect JPY 800,000 to arrive in your bank account every month.
That may not happen.
Rent from Japanese real estate received by a non-resident is Japanese-source income, and the payer may generally be required to withhold 20.42% from the rent.
For JPY 800,000 of monthly rent, that could mean approximately:
JPY 800,000 × 20.42% = JPY 163,360
is withheld before the balance is transferred to the landlord.
The Residential Exception — and Where Foreign Owners Get Caught
There is an important exception.
Where an individual tenant rents the property for the tenant’s own residence or for the residence of relatives, Japanese withholding is generally not required.
But consider a luxury apartment in Minato-ku, Shibuya or central Tokyo.
A common arrangement is:
A multinational company signs the lease and provides the apartment to one of its expatriate executives.
Economically, the apartment is being used as a residence.
Tax-wise, however, the payer is a corporation.
The individual residential-use exception generally does not protect the corporate tenant, meaning the corporate payer may have a withholding obligation.
This distinction can easily be missed during lease negotiations.
Why This Matters to the Landlord
If nobody identifies the withholding issue in advance, several problems can arise:
- the tenant may discover the obligation after payments have already begun;
- the corporate tenant may face withholding-tax compliance problems;
- future rental payments may suddenly be reduced;
- the landlord’s expected cash flow may change;
- additional documentation and tax filings may become necessary; and
- disputes may arise over who should economically bear the unexpected tax payment.
Importantly, the 20.42% withholding is not necessarily the landlord’s final Japanese tax cost.
Non-resident rental income is generally subject to Japanese tax return filing, and the tax withheld is settled through the final return. Excess withholding may therefore be credited or refunded depending on the actual taxable income and circumstances.
That distinction becomes particularly important for properties with substantial deductible expenses, depreciation, financing costs or management expenses.
Another Overlooked Requirement: A Japanese Tax Representative
A non-resident required to file in Japan may also need to appoint a Japanese Tax Representative (納税管理人) to handle Japanese tax procedures. The NTA specifically notes this requirement in relation to non-resident real estate income.
For overseas landlords, the tax structure should therefore be designed when the owner leaves Japan or acquires the property — not when the first tax filing deadline arrives.
3. Selling Japanese Real Estate as a Non-Resident? 10.21% of the Gross Price May Be Withheld
The Luxury Property Cash-Flow Trap
Now consider a foreign investor who purchased a premium Tokyo condominium several years ago and later became a non-resident of Japan.
The property is sold for:
JPY 200 million.
The investor may focus primarily on the capital gain.
But another rule can have a much more immediate impact on closing day.
When Japanese real estate is acquired from a non-resident, the purchaser is generally required to withhold 10.21% of the gross consideration paid to the seller.
On a JPY 200 million sale:
JPY 200,000,000 × 10.21% = JPY 20,420,000
could be withheld from the amount otherwise payable to the seller.
That is more than JPY 20 million of immediate cash-flow impact.
And critically:
The withholding is calculated on the sales consideration — not simply on the seller’s taxable capital gain.
The actual Japanese tax liability on the disposal is ultimately determined through the applicable Japanese tax calculation and filing process, with withholding taken into account. An overpayment may potentially result in a refund.
For a high-value property, however, the timing difference alone can be significant.
The JPY 100 Million Rule Is Often Misunderstood
There is an exception to the purchaser’s withholding obligation, but the requirements are narrow.
Withholding is generally not required where:
- the purchase price is JPY 100 million or less;
- the purchaser is an individual; and
- the property is purchased for the purchaser’s own residence or the residence of relatives.
These conditions matter.
A JPY 100 million threshold does not, by itself, create a general exemption.
For example, withholding issues may still arise when the purchaser is:
- a corporation;
- an investment vehicle;
- acquiring the property for rental purposes; or
- acquiring it for another non-qualifying use.
For luxury Japanese real estate, the tax status of both seller and purchaser should therefore be confirmed well before closing.
The Most Dangerous Question: Is the Seller Really a Japanese Tax Resident?
This is where seemingly simple transactions can become complicated.
Japanese tax residence is not determined solely by:
- nationality;
- visa status;
- possession of a Japanese residence card;
- owning a house in Japan; or
- having an address recorded on administrative documents.
Under Japanese income tax rules, residence status fundamentally depends on concepts such as domicile and residence, which require a factual analysis of the individual’s circumstances.
For internationally mobile individuals, relevant facts may include where the person actually lives, works and maintains the center of their life.
That creates risk not only for the seller, but also for the buyer.
If everyone assumes that the seller is a Japanese resident and the assumption later proves incorrect, the purchaser’s withholding position may become an issue.
For high-value transactions, relying on a single document or a casual statement that “I still live in Japan” is not a substitute for proper tax-residency analysis.
Three Transactions — One Common Problem
These situations look completely different:
A CEO working from a Tokyo hotel for several weeks.
A foreign investor renting a Shibuya apartment to a multinational company.
A non-resident selling a JPY 200 million condominium in Minato-ku.
Yet they share the same underlying problem:
Japanese tax law frequently focuses on the economic and factual connection with Japan — not simply where the money is paid or what the contract appears to say.
That is why cross-border tax problems often emerge when individuals rely on intuitive rules such as:
“My salary is paid overseas, so Japan cannot tax it.”
“The apartment is residential, so no rental withholding should apply.”
“The seller has Japanese documents, so they must be a Japanese tax resident.”
“The withholding should only apply to the profit.”
Each assumption can be expensive.
Before You Travel, Lease or Sell: Review the Japanese Tax Position First
If you are a high-net-worth individual, global executive or overseas property investor, consider obtaining a Japanese tax review before:
- performing substantial work during a temporary stay in Japan;
- entering or changing an international assignment;
- moving overseas while retaining Japanese real estate;
- leasing Japanese property to a corporate tenant;
- selling Japanese property after becoming a non-resident; or
- purchasing high-value Japanese property from an internationally mobile seller.
A pre-transaction review can identify withholding obligations, treaty relief, filing requirements, tax-representative requirements and potential cash-flow issues while there is still time to structure the transaction properly.
Cross-Border Tax Problems Are Much Easier to Prevent Than to Repair
Once a payment has been made, a property has closed, or an executive has already left Japan, correcting the Japanese tax position can become significantly more complicated.
Our practice advises foreign executives, entrepreneurs, overseas investors and high-net-worth individuals on Japanese and international tax matters, including:
- Japanese tax residency analysis
- Tax planning before moving to or leaving Japan
- Non-resident employment income
- Tax treaty analysis
- Japanese real estate income
- Non-resident landlord taxation
- Japanese property acquisitions and disposals
- Withholding-tax reviews
- Overseas assets and cross-border income
- Tax Representative services in Japan
- International tax second opinions
If you are planning a major transaction or cross-border move, a short tax review before the event can often prevent a much larger problem later.
Contact us for a confidential Japan Cross-Border Tax Review before you travel, sign the lease, or close the transaction.
Japanese tax treatment depends on the taxpayer’s residence status, applicable tax treaty, contractual arrangements and individual facts. This article provides general information and should not be relied upon as tax advice for a specific transaction.
Request a Japan Tax Review or schedule a confidential consultation with our international tax team.
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