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Counteracting Capital Gains: How Tax-Loss Harvesting Works

Counteracting Capital Gains: How Tax-Loss Harvesting Works

September 15, 2026

Blog > Tax Planning > Counteracting Capital Gains: How Tax-Loss Harvesting Works

Counteracting Capital Gains: How Tax-Loss Harvesting Works

Tax-loss harvesting involves selling securities at a loss to offset capital gains and reduce your overall tax liability. While this strategy does not eliminate investment losses entirely, it allows you to utilize those losses strategically to lower your federal tax bill.

Before executing any portfolio changes, ensure you consult with a qualified tax or financial professional to determine if this strategy aligns with your overall financial plan.

Tax-loss harvesting may not make sense if your portfolio is structured strictly for long-term growth without taxable turnover, or if your assets are held primarily in tax-advantaged accounts.

How Tax-Loss Harvesting Works

Under current federal tax guidelines, taxpayers can deduct up to $3,000 of capital losses in excess of capital gains each year. Any remaining net losses above this limit can be carried forward indefinitely to offset capital gains in future tax years. State tax treatments vary, so consulting a local accounting professional is essential to understand state-level impacts.

By taking losses intentionally and carrying forward excess amounts, investors can systematically manage both short-term and long-term capital gains tax exposure over time.

Understanding the Wash-Sale Rule

When executing this strategy, investors must adhere to the Internal Revenue Service's wash-sale rule. Under this rule, you cannot claim a tax loss on a security if you purchase the same or a "substantially identical" security within 30 days before or after the sale date.

  • The 61-Day Window: Including the day of the sale, the full restriction period spans 61 days.

  • Reinvestment Restrictions: You cannot immediately repurchase the same asset simply to claim a tax loss without disrupting your investment position.

Key Limitations and Drawbacks

While useful, tax-loss harvesting is not suitable for every investor or account type:

  • Tax-Advantaged Accounts Ineligible: You can only harvest tax losses in taxable brokerage accounts; IRAs, 401(k)s, and other tax-deferred accounts are ineligible.

  • Long-Term Strategy Alignment: Selling assets prematurely to capture a tax write-off may disrupt a carefully balanced long-term investment strategy.

A Year-Round Portfolio Strategy

Many investors only consider tax planning as year-end approaches, but tax-loss harvesting yields the best results when monitored continuously. Evaluating market fluctuations throughout the year allows investors to capture losses as opportunities arise rather than scrambling in December.

This material is for general informational purposes only and does not constitute tax, legal, or investment advice. Please consult with a qualified tax advisor or financial professional regarding your specific situation.