Tax-Loss Harvesting

IntermediateGeneral Investing2 min read

Quick Definition

Selling investments at a loss to offset capital gains taxes, then reinvesting in similar (but not identical) assets.

What Is Tax-Loss Harvesting?

Tax-loss harvesting is a strategy of selling investments that have declined in value to realize losses that offset capital gains, reducing your tax bill while maintaining your investment strategy.

How It Works:

  1. Identify investments trading below your cost basis
  2. Sell to realize the loss
  3. Use loss to offset gains (and up to $3,000 ordinary income)
  4. Reinvest in similar (not identical) investment
  5. Carry forward unused losses to future years

Example:

  • You have $10,000 in gains from Stock A
  • Stock B has a $10,000 loss
  • Sell Stock B → $0 net taxable gains
  • Buy similar ETF to maintain market exposure
  • Tax savings: $1,500-$3,500+ depending on tax bracket

Wash Sale Rule: You CANNOT buy "substantially identical" securities within 30 days before or after the sale:

  • ❌ Sell AAPL, buy AAPL within 30 days
  • ✅ Sell AAPL, buy technology ETF
  • ✅ Sell S&P 500 fund, buy total market fund
  • ❌ Sell VTI, buy VTSAX (substantially identical)

Benefits:

  • Reduce current year taxes
  • Maintain market exposure
  • Compound tax savings over time
  • No limit on losses to harvest

Best Practices:

  • Review portfolio quarterly
  • Consider transaction costs
  • Document all trades
  • Use tax-advantaged accounts for frequent trading
  • Robo-advisors often automate this

Tax-Loss Harvesting Example

  • 1Harvesting $10,000 loss saves $1,500-$2,000 in taxes
  • 2Sell international ETF at loss, buy different international ETF