Tax-Loss Harvesting: Definition and Example - Investopedia

Understanding Tax-Loss Harvesting

Tax-loss harvesting is a strategy that lets investors turn investment losses into a tax benefit. By selling securities that have fallen below their purchase price, you can realize a capital loss. That loss can then be used to offset capital gains—and, in some cases, ordinary income—reducing the amount of tax you owe each year.

How It Works

When you sell an investment for less than what you paid, the IRS treats the difference as a realized capital loss. You can use that loss in two main ways:

• Offset capital gains: Capital losses first offset any capital gains you realized during the same tax year. Short‑term gains (taxed at ordinary income rates) are offset before long‑term gains.
• Offset ordinary income: If your losses exceed your gains, you can deduct up to $3,000 ($1,500 if married filing separately) of the remaining loss against ordinary income each year. Any unused loss can be carried forward indefinitely.

Because the tax code limits how much loss you can claim against ordinary income each year, many investors use tax-loss harvesting to smooth out their tax liability over several years.

Why Families May Benefit

Families often have a mix of retirement accounts, college savings plans, and taxable brokerage accounts. While tax-advantaged accounts like 401(k)s and 529 plans grow tax‑free, the taxable accounts are where tax‑loss harvesting can make a noticeable difference. By regularly reviewing these accounts, you can:

• Reduce your annual tax bill, freeing up cash for other family goals such as a vacation, home improvement, or additional savings.
• Maintain a diversified portfolio without paying unnecessary taxes on gains.
• Take advantage of market volatility—downturns can create harvesting opportunities.

Step‑By‑Step Example

Let’s walk through a realistic scenario for a family with a taxable brokerage account.

1. Portfolio snapshot (beginning of the year):
   • 500 shares of ABC Corp bought at $40 per share = $20,000
   • 200 shares of XYZ Inc bought at $30 per share = $6,000
   • Total cost basis = $26,000
2. Market moves: By mid‑year, ABC Corp has risen to $55 per share, while XYZ Inc has fallen to $18 per share.
   • ABC Corp current value = 500 × $55 = $27,500 (unrealized gain $7,500)
   • XYZ Inc current value = 200 × $18 = $3,600 (unrealized loss $2,400)
3. Harvest the loss: Sell the 200 shares of XYZ Inc for $3,600, realizing a $2,400 capital loss.
4. Re‑invest the proceeds: To stay invested, you might buy a similar but not “substantially identical” security, such as an ETF that tracks the same sector (e.g., a technology sector ETF). This avoids the wash‑sale rule, which disallows the loss if you repurchase the same security within 30 days before or after the sale.
5. Tax impact: Assume you also sold other assets that generated $5,000 of short‑term capital gains earlier in the year. The $2,400 loss offsets those gains, leaving $2,600 of taxable gains. If you have no other gains, up to $3,000 of the loss could offset ordinary income, but in this case it’s fully used against the gains.
6. Result: By harvesting the loss, you reduced your taxable capital gains by $2,400, potentially saving $480–$960 in taxes depending on your marginal tax rate (20%–40%). That saved money can be redirected toward your family’s financial goals.

Key Rules to Keep in Mind

• Wash‑sale rule: If you buy the same or a “substantially identical” security within 30 days before or after the sale, the loss is disallowed for tax purposes and added to the new purchase’s cost basis.
• Timing: Tax‑loss harvesting is most effective toward the end of the calendar year, but you can also do it throughout the year if market volatility creates opportunities.
• Record‑keeping: Keep detailed records of purchase dates, cost bases, and sale proceeds. Many brokerages provide a “Tax‑Loss Harvesting” report that simplifies this process.
• Portfolio balance: Don’t let tax considerations drive your investment decisions alone. Ensure the post‑harvest portfolio still aligns with your risk tolerance and long‑term objectives.

Tools and Resources for Families

Several platforms make tax‑loss harvesting easier for everyday investors:

• Robo‑advisors: Services like Betterment and Wealthfront automatically identify loss‑harvesting opportunities and execute trades on your behalf.
• Brokerage platforms: Fidelity, Charles Schwab, and Vanguard offer built‑in tax‑loss harvesting tools and reports that highlight eligible positions.
• Tax software: TurboTax and H&R Block can import your brokerage data, helping you track carry‑forward losses and apply them correctly on your return.

When Tax‑Loss Harvesting May Not Be Right

While the strategy is powerful, it isn’t universally beneficial. Consider these scenarios:

• If you’re in a low tax bracket, the immediate tax savings may be modest, making the effort less worthwhile.
• If selling a losing position would leave you under‑diversified or overly concentrated in another asset, the portfolio risk could outweigh the tax benefit.
• For investors close to retirement, frequent trading could trigger higher transaction costs or unintended shifts in asset allocation.

Putting It Into Practice

1. Review your portfolio quarterly. Look for positions that are more than 10–15% below cost basis.

2. Identify replacement securities. Choose ETFs or index funds that track a similar market segment but aren’t “substantially identical.”

3. Execute the trade. Sell the losing security, then purchase the replacement within the 30‑day window to avoid the wash‑sale rule.

4. Document the loss. Record the transaction in your tax software or spreadsheet, noting the carry‑forward amount for future years.

Conclusion

Tax‑loss harvesting is a practical way for families to turn market downturns into a tax advantage, freeing up money for other priorities while keeping the investment plan on track. By understanding the rules, using the right tools, and staying disciplined, you can integrate this strategy into your annual financial routine without compromising your long‑term goals.

Key Takeaway

• Tax‑loss harvesting lets you offset capital gains and up to $3,000 of ordinary income with realized losses.
• Observe the 30‑day wash‑sale rule; replace sold securities with similar but not identical assets.
• Robo‑advisors and major brokerages offer built‑in tools that simplify the process.
• Maintain portfolio balance—tax benefits should never outweigh sound investment strategy.
• Track losses each year; unused losses can be carried forward indefinitely.

Source: Investopedia – Tax Gain/Loss Harvesting