Capital Gains: What They Are and Why They Matter
A capital gain is the profit you make when you sell an asset for more than you paid for it. Understanding how capital gains are taxed — and managing that liability strategically — is critical for any serious investor.
Capital gains split into two categories. Short-term gains (assets held less than one year) are usually taxed at your ordinary income rate. Long-term gains (held more than one year) are taxed at preferential rates — often 0%, 15%, or 20% in the US, depending on income.
This creates a powerful incentive to hold investments for longer than one year, reducing your tax burden significantly. It's one of the key advantages of a long-term, buy-and-hold strategy over active trading.
Tax rules vary by country. In the UK, gains above the annual CGT allowance are taxed at 10-24%. In Australia, assets held over 12 months qualify for a 50% CGT discount. Understanding your local rules is essential.
Tax-loss harvesting — intentionally selling underperformers to realise a loss that offsets gains elsewhere — is a useful strategy to reduce your overall tax liability each year.
Unrealised gains (on assets you still hold) are not taxable until you sell. This is why long-term investors who hold can defer capital gains tax indefinitely.
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