Capital Gains 101: Short vs Long-Term and Why It Matters

Hold an investment 366 days vs 364 days and your tax bill can drop by 20 percentage points. That is the entire game.

Google this topic and you will get a hundred answers, half of them wrong. Here is the version that holds up. Hold an investment 366 days vs 364 days and your tax bill can drop by 20 percentage points. That is the entire game.

Short-term capital gains

Held ≤ 1 year. Taxed at ordinary income rates (10–37% in US).

Long-term capital gains

Held > 1 year. Taxed at 0%, 15% or 20% depending on income bracket.

Tax-loss harvesting

Sell losers to offset winners; carry remaining losses to future years (up to $3,000/yr against ordinary income).

Pro tips

  • If you are within days of the one-year mark, wait. The tax saving usually beats the price risk.
  • Watch the wash-sale rule — buying back within 30 days disallows the loss.

Frequently asked questions

Do retirement accounts pay capital gains? No — 401(k)/IRA gains are tax-deferred or tax-free until withdrawal.

What about crypto? Same rules apply — short-term vs long-term holding period.

Run your own numbers before you trust a rule of thumb. Two minutes saves a lot of regret.

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