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Japan Tax Overview: Income Tax, Capital Gains & Securities Accounts (2025)(https://sli.dev)
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Kelvin Chandra
May 15, 2025

Japan Tax Overview: Income Tax, Capital Gains & Securities Accounts


Created with assistance from Gemini Canvas

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1. Income Tax in Japan (所得税 - Shotokuzei)

  • Comprehensive Taxation (総合課税 - Sōgō Kazei): Various individual incomes are combined, and progressive tax rates applied.
    • Examples: Salary, business, real estate income.
  • Progressive Tax Rate (累進税率 - Ruishin Zeiritsu): Tax rate increases with income (5% to 45% in 7 brackets for national tax).
    • Additional: Special Reconstruction Income Tax (2.1%) & Local Inhabitant Tax (~10%).
  • Income Deductions (所得控除 - Shotoku Kōjo): Amounts subtracted from total income to reduce tax burden. (Details follow)

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Tax Residency Status in Japan & Scope of Taxation

Understanding your tax residency status is crucial as it determines the scope of income subject to Japanese tax.

  • Resident (居住者 - Kyojūsha): An individual who has a "jusho" (domicile/address) in Japan or has resided in Japan for one year or more. Residents are further classified:

    • Non-Permanent Resident (非永住者 - Hi-eijūsha):

      • A resident who is not a Japanese national AND has resided in Japan for a total of 5 years or less within the preceding 10 years.
      • Taxable Income: Japan-sourced income + Foreign-sourced income that is paid in Japan or remitted to Japan.
      • Foreign-sourced income not paid in or remitted to Japan is generally not taxable in Japan for non-permanent residents.
    • Permanent Resident (永住者 - Eijūsha - for tax purposes):

      • A resident who is a Japanese national OR has resided in Japan for a total of more than 5 years within the preceding 10 years.
      • Taxable Income: Worldwide income, regardless of where it is sourced or whether it is remitted to Japan.
      • This "permanent resident" status for tax purposes is different from immigration status (e.g., holding a "Permanent Resident" visa).
  • Non-Resident (非居住者 - Hi-kyojūsha): An individual who is not classified as a resident.

    • Taxable Income: Generally only Japan-sourced income.

*The 5-in-10-year rule is a key determinant for the scope of taxation for foreign nationals.*

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Income Deductions (所得控除 - Shotoku Kōjo) - Overview (1/2)

Various deductions are available, such as:

  • Basic Deduction (基礎控除 - Kiso Kōjo): For all taxpayers.
  • Spouse Deduction (配偶者控除 - Haigūsha Kōjo): Supporting a low-income spouse.
  • Deduction for Dependents (扶養控除 - Fuyō Kōjo): Supporting eligible relatives. (Details to follow)

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Income Deductions (所得控除 - Shotoku Kōjo) - Overview (2/2)

  • Social Insurance Premium Deduction (社会保険料控除): For social insurance premiums paid.
  • Life Insurance Premium Deduction (生命保険料控除): For life, medical, individual pension insurance (limits apply).
  • Medical Expenses Deduction (医療費控除): For significant medical expenses (over ~¥100k or 5% of income).
  • Donation Deduction (寄付金控除): For specific donations, including Furusato Nōzei.

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Deduction for Dependents (扶養控除 - Fuyō Kōjo) - Focus on Relatives Abroad

For claiming deductions for relatives you financially support, especially those overseas.

Eligibility for Dependent Status:

  • Relationship: Spouse, or relative within 6 degrees of blood / 3 degrees of affinity.
  • Financial Support: Must "share the same livelihood" (生計を一にする), shown by regular remittances for those abroad.
  • Relative's Income: Annual income below a threshold (e.g., ¥480,000 total income).
  • Age: Dependent relative must be 16+ years old (as of Dec 31st).

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Deduction for Dependents: Requirements for Non-Resident Dependents (1/2)

To claim for a dependent relative living outside Japan, must provide:

  1. Proof of Relationship:
    • Examples: Passport copy, birth/marriage certificate, family register.
    • Requires Japanese translation if not in Japanese.

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Deduction for Dependents: Requirements for Non-Resident Dependents (2/2)

  1. Proof of Financial Support (Remittance Documents):
    • Examples: Bank transfer statements, credit card statements showing cash advances to that specific relative.
    • Must show taxpayer as sender & dependent as recipient. Individual remittances are clearer.
    • Frequency & Amount:
      • No strict "minimum remittance."
      • Must be "necessary for daily life" & "continuous" or "as needed."
      • Small, one-off amounts may not suffice. Regular is better.

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Deduction for Dependents: New Rules & Key Considerations

  • Important Note (from 2023 Tax Year): For non-resident relatives aged 30-69, conditions are stricter. Generally must be:

    • Studying abroad (student visa).
    • Disabled.
    • OR Receiving at least ¥380,000 in remittances from taxpayer that year.
  • Documentation Retention & Key Considerations for Foreigners:

    • Submit with tax return or to employer for year-end adjustment (年末調整). Keep for 5-7 years.
    • Ensure Japanese translations for foreign documents.
    • Recipient name on remittance must match dependent's name. Maintain clear records.

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National Income Tax Rates (令和5年分 - For Reiwa 5 / 2023 Tax Year onwards)

Taxable Income (A) Tax Rate (B) Deduction Amount (C)
¥1,000 to ¥1,949,000 5% ¥0
¥1,950,000 to ¥3,299,000 10% ¥97,500
¥3,300,000 to ¥6,949,000 20% ¥427,500
¥6,950,000 to ¥8,999,000 23% ¥636,000
¥9,000,000 to ¥17,999,000 33% ¥1,536,000
¥18,000,000 to ¥39,999,000 40% ¥2,796,000
¥40,000,000 and over 45% ¥4,796,000
Tax Amount = (A × B) - C. *Source: NTA Japan. National tax only. Local inhabitant tax (~10%) & Special Reconstruction Tax (2.1% of national) apply separately.*

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Special Feature: Furusato Nōzei (ふるさと納税 - Hometown Tax Donation)

  • Concept: "Donate" to chosen Japanese municipalities.
  • Mechanism: Donation (minus ¥2,000 co-pay) is largely deductible from income & inhabitant tax. Limit based on income/family.
  • Benefits:
    • Tax Reduction: Effectively pre-pays inhabitant tax.
    • Thank-You Gifts (返礼品): Local specialty products (value capped at 30% of donation).
  • Process: Choose -> Donate -> Get certificate -> File tax return OR use "One-Stop Exception System."
  • Purpose: Revitalize regional areas.

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2. Capital Gains Tax (キャピタルゲイン税)

  • Definition: Tax on profits (譲渡所得) from selling assets (stocks, investment trusts, real estate).
  • Separate Taxation (分離課税): Usually calculated separately from other income.
    • For Listed Stocks, etc.: Total 20.315% (Income Tax 15.315% + Inhabitant Tax 5%).
    • For Real Estate: Rates vary by holding period.
  • Profit and Loss Offset (損益通算 - Son'eki Tsūsan): Offset capital gains with other capital losses within the same year (conditions apply, e.g., gains/losses from listed stocks can be offset).
  • Loss Carryforward (繰越控除 - Kurikoshi Kōjo):
    • If you have a net loss from listed stocks, etc., after offsetting within the year, you can carry forward this loss for up to 3 subsequent years to offset future capital gains from listed stocks.
    • Requires filing a tax return (確定申告 - Kakutei Shinkoku) for the year the loss occurred AND for each subsequent year you claim the deduction.
    • This applies even if you use a Specified Account with withholding tax, if you wish to utilize loss carryforward.

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3. Types of Securities Accounts and Taxes (証券口座の種類と税金)

Overview of common account types for investments in Japan.


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a. NISA (Nippon Individual Savings Account - ニーサ)

Features, Types, Merits & Demerits

  • Features: Capital gains & dividends from investments within annual tax-exempt allowance are non-taxable.
  • Main Types (New NISA from 2024):
    1. Tsumitate Investment Quota (つみたて投資枠):
      • Annual Limit: ¥1.2M; Max Holding: ¥18M (Growth part up to ¥12M).
      • Eligible: Certain long-term, diversified investment trusts.
    2. Growth Investment Quota (成長投資枠):
      • Annual Limit: ¥2.4M; Max Holding: ¥18M (Growth part up to ¥12M).
      • Eligible: Listed stocks, investment trusts, etc. (some exclusions).
  • Merits: Tax-free profits; indefinite holding period (New NISA).
  • Demerits: No profit/loss offset with taxable accounts; no loss carryforward. Annual investment limit.

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b. Specified Account (特定口座 - Tokutei Kōza)

Features, Types, Merits & Demerits

  • Features: Financial institution calculates annual profits/losses; prepares "Annual Transaction Report." Simplifies tax.
  • Two Types:
    1. With Withholding Tax (源泉徴収あり):
      • Institution withholds taxes (20.315%) on profits.
      • Generally, no tax return needed (unless offsetting, etc., or carrying forward losses).
    2. Without Withholding Tax (源泉徴収なし):
      • Institution calculates profit/loss; investor files tax return.
  • Merits: "With Withholding" saves filing hassle; reduces calculation errors.
  • Demerits (for "With Withholding"): May still need tax return for profit/loss offset with other accounts or loss carryforward.

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c. General Account (一般口座 - Ippan Kōza)

  • Features:
    • Investors must calculate annual trading profits/losses and file their own tax return.
    • Financial institutions issue "Transaction Reports," not a consolidated annual one.
  • Merits:
    • Can manage products not handled by Specified or NISA accounts (e.g., unlisted stocks).
  • Demerits:
    • Profit/loss and tax calculations are complex and time-consuming.
    • Tax return filing is mandatory.

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Brokerage Examples in Japan

  • Major Japanese Online Brokers (Support all 3 account types):

    • SBI Securities (SBI証券): Large, wide product range, popular for NISA.
    • Rakuten Securities (楽天証券): Popular, Rakuten ecosystem integration, strong NISA.
    • Generally recommended for ease of use, JP support, full NISA/Specified Account features.
  • International Brokers (May have limitations):

    • Interactive Brokers (IBSJ):
      • Primarily offers General Accounts (一般口座) for JP residents.
      • NISA/Specified Accounts generally not available via IBSJ for JP tax residents.
      • Known for global market access & lower US stock commissions.
      • Tax reporting is investor's responsibility.

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Brokerage Fee Comparison (Examples)

*Fees are examples & can change. Check broker's current terms. Focus on common scenarios.*
*Simplified comparison. Other fees may apply. Research thoroughly.*
Feature Rakuten Securities SBI Securities Interactive Brokers (IBSJ)
JP Stocks - ¥0 up to ¥1M daily (Zero)
- Tiered (Super Value)
- Tiered (Std)
- Daily total (Active)
- Tiered/fixed (~0.05%-0.1%)
US Stocks - 0.495% (max $22) - 0.495% (max $22) - Very low, e.g., $0.0035/share (min $0.35)
Inv. Trusts (JP) - Many "No-Load" - Many "No-Load" - Less focus; US ETFs
FX (USD/JPY) - ~¥0.25 / USD - ~¥0.25 / USD - Very low (near interbank)

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Available Investment Products (Examples)

  • Popular S&P 500 Investment Trusts (Japan):

    • e.g., eMAXIS Slim US Equity (S&P 500), Rakuten S&P 500 Index Fund.
    • Low-cost, popular for NISA/Specified. Purchased in Yen.
  • ETFs Listed in Japan (TSE):

    • Track Japanese (Nikkei 225, TOPIX) & international indices.
    • e.g., NEXT FUNDS S&P 500 ETF (1547), iShares Core S&P 500 ETF (2558).
    • Purchased in Yen, subject to JP capital gains tax.
  • ETFs Listed in the US (NYSE, NASDAQ):

    • Vast range (e.g., VOO, VTI, QQQ).
    • Purchased in USD (via IBSJ or some JP brokers).
    • Subject to JP capital gains tax & US dividend withholding (see Foreign Tax Credit).

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Foreign Tax Credit Deduction (外国税額控除 - Gaikoku Zeigaku Kōjo)

  • Purpose: Alleviates double taxation on foreign dividends (e.g., US stocks/ETFs where US withholds 10% tax for JP residents).
  • Mechanism: Claim credit for foreign tax paid against your Japanese income & inhabitant tax.
  • Process (Simplified):
    1. US withholds 10% tax on dividends.
    2. Declare dividend income & US tax withheld on JP tax return.
    3. Credit calculated (up to JP tax liability on that income).
  • Claiming: File tax return (確定申告) with proof of foreign income & tax paid (broker statements).
  • Benefit: Reduces overall tax on foreign dividends.
  • NISA Ineligibility: Income within a NISA account is already non-taxable in Japan, so foreign tax credit is not applicable/cannot be claimed for NISA investments.

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Who Needs to File a Final Tax Return (確定申告 - Kakutei Shinkoku)?

When is a Final Tax Return (確定申告) Needed?

  • Annual employment income > ¥20 million.
  • Side income (non-employment) > ¥200,000 (if from one employer).
  • Income from 2+ employers & side income > ¥200,000 (if not year-end adjusted).
  • Self-employed, freelancer, business/real estate income.
  • Capital gains not taxed at source (e.g., General Account, Specified Account w/o withholding), or to carry forward losses.
  • To claim specific deductions/credits not covered by employer's adjustment:
    • e.g., Medical Expenses, 1st year Housing Loan, Donations (Furusato Nōzei w/o One-Stop), Foreign Tax Credit.

Why Most Salaried Employees (会社員) Don't File:

  • Employer handles taxes via Year-End Tax Adjustment (年末調整 - Nenmatsu Chōsei).
  • This usually finalizes tax for those with one employer, income < ¥20M, no major other income/deductions.

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Exit Tax (出国税 - Shukkokuzei / 国外転出時課税制度) - Brief Overview

  • Target: Certain residents (Japanese nationals & foreign nationals who meet specific criteria like visa type and length of stay) leaving Japan permanently or for an extended period.
  • Trigger: If they hold covered assets (e.g., securities, derivatives) with a total value of ¥100 million or more at the time of departure.
  • Mechanism: Unrealized capital gains on these covered assets are deemed to have been realized and are subject to income tax (15.315%) as if sold at fair market value upon departure.
  • Purpose: To prevent wealthy individuals from avoiding capital gains tax by moving assets abroad before realizing gains.
  • Important: Complex rules apply. Professional advice is crucial if this might affect you.

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Inheritance & Gift Tax (相続税・贈与税 - Sōzokuzei / Zōyozei) - Brief Overview

  • Inheritance Tax (相続税):

    • Levied on assets inherited upon someone's death.
    • Taxed on the recipient (heir). Rates are progressive.
    • Scope of taxable assets depends on the heir's and decedent's residency status and nationality.
    • Basic exemptions exist; tax is due if inherited assets exceed these.
  • Gift Tax (贈与税):

    • Levied on assets gifted from one living person to another.
    • Taxed on the recipient of the gift. Rates are progressive and generally higher than inheritance tax rates for equivalent amounts.
    • Annual basic exemption (currently ¥1.1 million per recipient per year). Gifts exceeding this are taxable.
    • Can also apply to foreign assets depending on donor/recipient status.
  • Key Point: Both are complex, especially for international situations. Early planning and professional advice are highly recommended.


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4. Summary (まとめ)

  • Income Tax: Combined, progressive. Deductions (Furusato Nōzei, Dependents) reduce tax. Tax residency status (5-in-10 year rule) affects scope.
  • Capital Gains Tax: On asset sale profits; typically 20.315% for listed stocks. Losses can be carried forward for 3 years by filing a tax return.
  • NISA: Tax-free investment profits up to limits. Foreign tax credit not applicable.
  • Specified Account: Broker calculates tax; "Withholding" option simplifies. Tax return needed for loss carryforward.
  • General Account: Self-calculation & tax filing.
  • Brokerages/Products: SBI/Rakuten full-featured; IBSJ for global, low-cost US stocks (General Acct). Fees vary.
  • Foreign Tax Credit: Reduces double tax on foreign dividends (not for NISA).
  • Tax Return (確定申告): For high earners, multiple incomes, specific claims, or loss carryforward. Most salaried covered by employer.
  • Exit Tax: Applies to wealthy residents departing Japan with significant unrealized gains on certain assets.
  • Inheritance/Gift Tax: Levied on inherited assets or gifts, with progressive rates and exemptions. Complex for international cases.

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Disclaimer

It is important to choose the optimal account type according to your situation and understand the tax system.


Please consult with a tax office or a tax accountant (税理士 - zeirishi) if you have any questions, especially regarding complex situations like supporting non-resident dependents or claiming foreign tax credits.


This information is for general guidance only and tax laws can change.
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