How are dividends taxed by default in Japan?

By default, dividends from listed shares are subject to separate withholding tax at a flat 20.315 percent. This comprises 15 percent national income tax, a 0.315 percent reconstruction surtax, and 5 percent local inhabitant tax. The tax is withheld at source, so for many investors no further filing is needed.

What is the aggregate taxation election?

Instead of the flat separate rate, you can elect to add dividends to your other income and tax them at your progressive marginal rate (sogo kazei). This benefits lower-income holders whose marginal rate is below 20.315 percent, and it unlocks the dividend tax credit. Higher earners usually keep the flat separate method.

What is the dividend tax credit?

When you choose aggregate taxation, Japan grants a dividend tax credit of up to 10 percent of the dividend against your national income tax (and 2.8 percent against local tax) for income within certain thresholds. This credit reduces the effective rate and is why aggregate taxation can be advantageous for modest portfolios.

Which method should I choose?

If your marginal income tax rate is low, aggregate taxation with the dividend tax credit often leaves you with more after tax. If you are a higher-rate taxpayer, the flat 20.315 percent separate withholding is usually better. Compare both outputs here, but confirm with a tax professional, as local tax and other income interact.

Does this apply to foreign dividends?

This tool models Japanese listed-share dividends. Dividends from foreign companies may have foreign withholding tax deducted abroad first, then face Japanese tax, with a foreign tax credit available to avoid double taxation. The mechanics differ, so use this calculator for domestic dividends and seek advice for foreign income.

Japan Dividend Tax Calculator

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Most investors in Japan see dividends arrive already taxed at the flat 20.315 percent withholding rate, but choosing aggregate taxation can leave lower earners better off thanks to the dividend tax credit. This calculator computes your net dividend under both methods so you can pick the one that keeps more in your pocket.

How it works

The default separate method applies a single flat rate, while the aggregate method uses your marginal rate less a dividend tax credit:

separate   → tax = gross × 20.315%
aggregate  → national = gross × (marginalRate − 10% credit), floored at 0
             local    = gross × (5% − 2.8% credit) = gross × 2.2%
             tax      = national + local
net        = gross − tax

The 20.315 percent figure already includes the 0.315 percent reconstruction surtax on the national portion. The credit only applies under aggregate taxation.

Example and notes

A ¥1,000,000 gross dividend taxed under the separate method loses ¥203,150, leaving ¥796,850. The same dividend under aggregate taxation for someone on a 10 percent marginal national rate pays almost nothing nationally after the 10 percent credit, plus the reduced 2.2 percent local tax, keeping noticeably more. As your marginal rate rises above roughly 20 percent the flat separate method wins. Compare both outputs above, and remember that aggregate taxation pulls dividends into your total income, which can affect other thresholds.