Taxes on Stock Profits: The 20.315% Rate and Account Types Explained
When you make money from stocks or mutual funds, profits are generally taxable. This guide explains how taxes work on the two types of investment profit, capital gains and dividends, covering the 20.315% rate, account types, loss offsetting and carryover, and the tax-free NISA system.
"How much tax do I pay on stock profits?" and "Do I need to file a tax return?" are questions every investor eventually faces. Taxes on stocks and mutual funds in Japan are not as complex as they seem once you understand the basics. This article walks through the core rules.
Two Types of Taxable Profit
Profits from stocks and funds fall into two taxable categories:
- Capital gains: the difference when you sell a stock or fund for more than you paid.
- Dividends and distributions: income received from stock dividends or fund distributions.
For example, buying a share at 1,000 yen and selling at 1,500 yen produces a 500 yen capital gain (less trading fees). Dividends received while holding are taxed separately. You can estimate capital gains tax with the Capital Gains Tax Simulator and dividend take-home with the Dividend Calculator.
Breakdown of the 20.315% Rate
Both capital gains and dividends are taxed at a combined 20.315%. The breakdown is:
| Tax | Rate |
|---|---|
| Income tax | 15% |
| Special reconstruction tax | 0.315% |
| Residence tax | 5% |
| Total | 20.315% |
The reconstruction tax adds 2.1% on top of the 15% income tax (15% x 2.1% = 0.315%) and applies through 2037. On a 300,000 yen gain, tax is 60,945 yen, leaving about 239,000 yen. A simple rule of thumb: roughly 20% of your profit goes to tax.
Account Types Compared
Brokerage accounts come in several types that change how much tax paperwork you handle.
Specific account (with withholding)
The easiest option. The broker calculates gains and withholds tax automatically, so you generally do not need to file a return. Recommended for most beginners.
Specific account (without withholding)
The broker provides an annual transaction report, but you pay the tax yourself, meaning you must file in profitable years.
General account
You handle all calculations and filing yourself. Rarely the best choice for ordinary investors.
NISA account
Profits inside a NISA account are tax-free, so no withholding or filing is needed.
If in doubt, choose the "specific account with withholding" to minimize paperwork and mistakes.
Loss Offsetting and Carryover
Some years bring losses. Two systems help here.
Loss offsetting
Within the same year, gains and losses can offset each other. A +500,000 yen gain on stock A and a -200,000 yen loss on stock B leave 300,000 yen taxable. Losses across multiple brokers can also be combined by filing a return.
Loss carryover
Unused losses can be carried forward for up to three years by filing a return. A 1,000,000 yen loss this year can offset next year's gains and reduce that tax to zero.
Crucially, both systems generally require a tax return. File even in a loss year if you want to carry the loss forward.
Taxes on Dividends
Dividends also have 20.315% withheld at source. For dividends you can choose among three filing methods:
- No filing: settle with withholding only; simplest.
- Separate taxation: taxed separately at 20.315%; choose this to offset against capital losses.
- Aggregate taxation: combined with other income at progressive rates, with a dividend credit that may benefit those with lower taxable income.
The best choice depends on your income. Check take-home figures with the Dividend Calculator and confirm details with current tax rules or a professional.
Tax-Free Investing with NISA
Under the new NISA system from 2024, gains and dividends are entirely tax-free up to 3.6 million yen per year and 18 million yen over a lifetime. A 1,000,000 yen gain that would lose about 200,000 yen to tax in a regular account keeps its full value in NISA. Estimate future assets with the NISA Simulator. Note that losses in a NISA account cannot be offset or carried over against taxable accounts.
When You Need to File
- Only a specific account with withholding: generally no filing needed.
- Want loss offsetting or carryover: filing required.
- Profit in a no-withholding or general account: filing required.
- Employee with over 200,000 yen of non-salary income: filing may be required.
Start by knowing your profit. Estimate your tax with the Capital Gains Tax Simulator and prepare to file if needed.
This article reflects general information as of June 2026 and tax rules may change. For exact calculations and advice on your situation, always consult official sources such as the National Tax Agency or a qualified tax professional. This article does not recommend any specific investment.
FAQ
What is the tax rate on stock profits in Japan?
Both capital gains and dividends are taxed at 20.315%, made up of 15% income tax, 0.315% reconstruction tax, and 5% residence tax. This applies through 2037.
Do I need to file a return with a specific account with withholding?
Generally no. The broker withholds and pays the tax for you. However, you must file if you want to use loss offsetting or carryover.
Should I file a return in a loss year?
Yes, if you want to carry the loss forward (up to three years) or offset it against gains in other accounts. Filing in a loss year preserves these benefits.
Are profits in a NISA account taxed?
No. Capital gains and dividends inside a NISA account are tax-free. However, NISA losses cannot be offset or carried over against taxable accounts.
Is it better to file a tax return for dividends?
It depends. There are three methods, and people with lower taxable income may benefit from aggregate taxation with the dividend credit. Compare options based on your income.