Dividend and Investment Tax in Japan Confirm the cited source.

01What rate applies to dividends from Japanese listed shares?

Dividends paid by corporations whose shares are listed on a Japanese exchange (joto kabushiki-to no haitoto -- listed share dividends) are subject to a combined withholding rate of 20.315%, composed as follows: 15% national income tax (shotoku-zei), 0.315% Special Reconstruction Income Tax (fukko tokubetsu shotoku-zei -- 2.1% levied on the 15% base through 31 December 2037), and 5% local inhabitant tax (jumin-zei). The paying Japanese corporation withholds this amount at source. [NTA Tax Answer No. 1330] This default treatment requires no further action from most resident investors: the withheld amount is the final tax, and no entry for the dividend is needed on the annual return (kakutei shinkoku). The same combined 20.315% rate applies to interest income from domestic bank deposits and domestic bonds under NTA No. 2230, also withheld at source as a final tax. The Japan country overview provides context on the broader personal income tax framework.

02What are the three taxation-method choices for listed dividends?

The National Tax Agency recognises three approaches a Japanese resident may elect for listed-share dividends declared on the annual return. [NTA Tax Answer No. 1330; No. 1331]

1. Withholding-only (kakutei shinkoku fuyou seido -- no-return system): The 20.315% withheld by the paying corporation is treated as the final tax. No entry on the return is required. This is the default for dividends held through a Tokutei Koza (specified account) with withholding enabled. The dividend does not affect the filer's declared income total for purposes of dependent deductions or National Health Insurance premium calculations.

2. Separate self-assessment (bunri kakutei shinkoku -- separate declaration taxation): The filer elects to report the dividends at the flat 20.315% rate on a separate schedule, independently of other income. [NTA No. 1331] The primary benefit is the ability to offset listed-security capital losses (from the same or a carried-forward prior year) against dividend income -- a route not available under withholding-only treatment. No dividend credit is available under this method.

3. Aggregate taxation (sogo kazei -- comprehensive taxation): The filer includes dividend income with all other income, applying the progressive national income tax scale (5%-45%) plus 10% inhabitant tax. Choosing aggregate taxation qualifies the filer for the dividend tax credit (haito-koujyo): 10% of dividend income reduces the tax liability directly when total taxable income is JPY 10 million or below; 5% applies to the portion above JPY 10 million. [NTA Tax Answer No. 1250] The withholding already paid is credited against the resulting liability. Aggregate taxation is most beneficial when the filer's marginal national rate is below 15% -- broadly, filers with total income below approximately JPY 6.95 million.

Note: as of 1 January 2024, the taxation method elected for national income tax purposes is also applied to the inhabitant-tax portion of listed dividends. Prior-year mismatches between national and local elections are no longer permitted. [NTA announcement, 2023 tax reform]

03How does the Tokutei Koza (specified brokerage account) work?

The Tokutei Koza is a special brokerage account type introduced to simplify investment taxation. It exists in two sub-types. [NTA Tax Answer No. 1476]

The gensen-choshu-ari sub-type (with withholding) instructs the broker to calculate gains and dividends within the account and automatically withhold and remit the 20.315% tax on the investor's behalf. A year-end annual transaction report (Tokutei Koza Nenkan Torihiki Hokokusha) is issued. No personal tax return entry is required for qualifying income in this account. This is the most common choice for retail investors who do not wish to file a return.

The gensen-choshu-nashi sub-type (without withholding) has the broker compute a gain/loss report, but the investor must personally include the figures on the annual return. This sub-type is chosen by investors who want to combine gains and losses across multiple accounts, or who wish to carry forward losses.

A general (ippan) account requires the investor to compute and report all figures independently. The Tokutei Koza system does not change the applicable tax rate -- it only shifts the calculation and remittance burden to the broker.

04What is the 2024 NISA reform and how does it affect investment income?

The New NISA (Nippon Individual Savings Account), effective 1 January 2024, substantially expanded Japan's tax-free retail-investment framework and made it permanent. [Japan Securities Dealers Association, 2024 NISA Overview; NTA / Financial Services Agency]

The redesigned account contains two simultaneous quotas. The Tsumitate Investment Quota (tsumitate toshi waku -- accumulation quota) allows JPY 1.2 million per year in regular periodic purchases of FSA-approved investment trusts. The Growth Investment Quota (seiche toshi waku) allows JPY 2.4 million per year in individual listed shares, ETFs, and qualifying investment trusts. Both may be used simultaneously, for a combined annual contribution ceiling of JPY 3.6 million.

The lifetime tax-free balance ceiling is JPY 18 million in total (with up to JPY 12 million attributable to the Growth quota). Under the 2024 reform, the tax exemption period is indefinite -- no fixed five-year or twenty-year window applies. All dividends, interest distributions, and capital gains realised within the NISA account are entirely free of the 20.315% tax.

A key flexibility feature: when NISA holdings are sold, the used contribution room is restored (up to the lifetime cap) and may be reused in a subsequent year. NISA is available to Japanese residents aged 18 and over. Only one NISA account per person is permitted, held at a single financial institution per calendar year.

05How are dividends from unlisted shares taxed differently?

Dividends from shares not listed on a Japanese exchange are treated materially differently from listed-share dividends. [NTA Tax Answer No. 1330]

Unlisted-share dividends are subject to withholding at 20.42% (15% income tax + 0.42% reconstruction surtax -- the local 5% inhabitant tax component does not apply via the source-withholding route for unlisted shares in the same manner). Crucially, unlisted-share dividends are subject only to aggregate (comprehensive) taxation: filers cannot elect separate self-assessment or the withholding-only no-return system. The dividends must be reported on the annual return, combined with other income at the progressive scale. The dividend credit under NTA No. 1250 (10% / 5%) is available because aggregate taxation is mandatory.

Additionally, dividends from listed companies paid to major shareholders (those holding 3% or more of total issued shares as of 1 October 2023 onward) lose access to the separate self-assessment and withholding-only elections and are also confined to aggregate taxation -- matching the treatment of unlisted-share dividends. Capital losses from unlisted shares cannot be offset against gains from listed shares; the two categories are ring-fenced.

For Japanese residents with concentrated unlisted-share positions or founder-stage equity, the mandatory aggregate treatment means dividend income stacks on top of other income and may be taxed at the marginal progressive rate (up to 45% national + 10% local = 55.945% including the reconstruction surtax), partially offset by the 10% dividend credit.

06Where do I get qualified guidance?

This page summarises publicly available NTA rules for informational purposes. The election choices -- withholding-only versus separate self-assessment versus aggregate taxation -- interact with capital-loss positions, National Health Insurance premiums, dependent deductions, and residency status in ways that vary by individual circumstances. A Japanese certified tax accountant (zeirishi) registered with the Japan Federation of Certified Public Tax Accountants' Associations can assess which method produces the best outcome in a specific situation. Consulting a qualified tax professional before filing is the appropriate step for any filer with non-trivial investment income.