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Taxes on investing depend on the country where you are tax resident. This chapter covers the US and the EU, the two places most readers are in. Figures are for 2026 and tax rules change often: always check the current rules with your tax authority or a tax advisor. This is general education, not tax advice.
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Short-term vs long-term gains
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This is one of the biggest reasons long-term investing pays off in the US.
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2026 long-term capital gains brackets (taxable income) (Schwab)
| Rate | Single | Married filing jointly |
|---|---|---|
| 0% | up to $49,450 | up to $98,900 |
| 15% | $49,451 to $545,500 | $98,901 to $613,700 |
| 20% | above $545,500 | above $613,700 |
Net Investment Income Tax (NIIT): an extra 3.8% on investment income if your modified adjusted gross income is above $200,000 (single) or $250,000 (married filing jointly) (IRS).
Losses: capital losses offset capital gains. If losses are bigger than gains, up to $3,000 a year can be deducted from ordinary income, and the rest carries forward to future years (Schwab).
Wash sale rule: if you sell at a loss and buy the same or a substantially identical investment within 30 days before or after the sale, you can't claim that loss at that time (IRS Publication 550).