Capital Gains Tax

When you sell an asset for more than its purchase price (basis), the profit is a capital gain. The U.S. tax code treats short-term and long-term gains very differently.

The two rates

• Short-term capital gains (held ≤ 1 year): Taxed at ordinary income rates (up to 37% federal).
• Long-term capital gains (held > 1 year): 0%, 15%, or 20% depending on income bracket.

2024 LTCG brackets

The 0% bracket trick

Investors in lower brackets — and many early retirees — can realize long-term gains entirely tax-free by staying under the 0% threshold. Strategic harvesting of gains in low-income years (sabbaticals, early retirement, post-tax-loss-harvest) can reset cost basis without tax cost.

The two-tier system that matters

The single biggest tax distinction in investing: how long you held the asset before selling.

• Short-term capital gains (held ≤ 1 year): taxed as ordinary income (10–37% federal).
• Long-term capital gains (held > 1 year): taxed at 0%, 15%, or 20% federal — significantly lower.

Crossing the 1-year holding line is often worth tens of thousands of dollars on a single trade. Many investors sell at 364 days when they should wait one more day.

2024 LTCG brackets

Plus 3.8% Net Investment Income Tax (NIIT) above MAGI thresholds. Plus state tax (varies; California adds up to 13.3%).

The 0% bracket trick

Investors in lower brackets — and especially early retirees — can realize substantial long-term gains entirely tax-free. A retired couple with $40,000 of pre-tax pension income can realize up to $54,000 of long-term capital gains at 0% federal rate. This is one of the most underused tax strategies in early retirement planning.

Common capital gains mistakes

• Selling at 11 months instead of 12. A 22% rate becomes 15% — a 32% tax savings — by waiting one extra month.
• Selling at the bottom of bear markets. Realizing losses for emotional reasons; useful only if planning to harvest them.
• Forgetting state tax. CA, NY, NJ residents add 5–13% on top of federal.
• Not using specific-lot identification. Selling FIFO when lot-level identification could save thousands.
• Forgetting NIIT. The 3.8% surcharge applies above MAGI $200k single / $250k MFJ.

Strategies to minimize capital gains

• Hold > 1 year. Always check the holding period before selling.
• Tax-loss harvesting. Offset realized gains with realized losses.
• Specific-lot ID. Sell highest-basis lots first to minimize gain.
• Realize gains in low-income years. Sabbaticals, gap years, early retirement — fill the 0% bracket.
• Charitable giving of appreciated stock. Donate stock instead of cash; avoid the gain entirely + get the deduction.
• Hold until death. Step-up in basis erases embedded gains for heirs.

Frequently asked questions

What about crypto?

Same rules apply. Crypto is property; the 1-year holding rule determines short vs. long-term treatment.

How does the wash-sale rule interact?

If you sell at a loss and buy back the same security within 30 days, the loss is disallowed. Doesn't apply to gains.

State capital gains rates?

9 states have no state income tax (no state capital gains either). California taxes capital gains as ordinary income (up to 13.3%). New York, New Jersey, Oregon, Minnesota, Hawaii also high.

Putting this into practice this week

Concepts only matter if they change behavior. Pick the single most relevant action from the above and put it on your calendar — even 15 minutes of action beats hours of further reading without doing anything. The compound benefit of small consistent moves dwarfs the optimization gain from any single decision. Most people fail at finance not because they don't know what to do, but because they don't act on what they already know.

How this connects to the rest of your financial plan

Personal finance is a system, not a list of independent decisions. The choices you make in one area cascade into others: a tax-loss harvest affects your asset allocation, a 401(k) contribution affects your near-term cash flow, a Roth conversion in 2024 affects RMDs in 2050. Sophisticated financial planning is mostly about understanding these second- and third-order effects. The basics that everyone should master first: emergency fund in cash, capture the full 401(k) match, eliminate high-interest debt, max tax-advantaged accounts before taxable, write down a single-page financial plan and review it annually.

Key takeaways

• Understand the mechanics before you optimize the edges. A solid 70% strategy beats a fragile 95% optimization.
• Automate behavior so you don't depend on willpower. Set-it-and-forget-it is the highest-leverage financial habit.
• Match the strategy to your actual situation, not the situation you wish you had or that influencers describe.
• Review annually; ignore daily noise. The market's short-term moves rarely require a response.
• Consistency over decades beats brilliance over months. Time in the market does the work; trying to time it usually destroys it.

The bottom line

The biggest financial wins come from doing the simple things consistently for decades — not from finding the cleverest single trick. Build the foundation first; the optimizations layer on top once the foundation is solid. The investors who end up wealthy aren't the ones who picked the best stocks. They're the ones who saved consistently, kept costs low, took appropriate risk for their horizon, and didn't sell during crashes. Everything else is detail.

Continue your learning at Krovea

Krovea exists to connect every concept on this page to the next one you should read. Use the site-wide search for any term you're unsure about. Run the relevant numbers on a Krovea calculator with your actual situation — projections beat speculation every time. Look up unfamiliar jargon in the A–Z dictionary. Most readers find their first session on Krovea answers one question and surfaces three more — that's how compounding knowledge works. Subscribe to the weekly briefing if you want the highest-impact one topic delivered without the noise of constant financial media.

A final note on financial decision-making

Every concept covered here exists because someone made a costly mistake first and the rule emerged from the consequences. The 401(k) match exists because Americans weren't saving enough. The Roth IRA exists because mid-century retirees got taxed twice on their nest eggs. The wash-sale rule exists because traders abused loss harvesting. Treat each piece of advice not as arbitrary rules to memorize but as the encoded lessons of prior generations of investors. The framework that survives recessions, regulatory changes, and market manias has been stress-tested in ways no individual could replicate. Following the boring conventional wisdom isn't unimaginative — it's the result of selecting for what actually works at scale across millions of investors and dozens of market cycles.

One last thing — when in doubt, do less

The average investor underperforms their own funds by 1–2% per year because of trading mistakes — entering after rallies, exiting after crashes, switching strategies after they stop working. Inaction has a cost, but action has a much bigger one. When you're not sure what to do, the right answer is usually nothing. Pick the next paycheck's contribution, automate it, and look away until tax season.