What Is Tax Loss Harvesting and How Does It Work?

Tax loss harvesting is an investment strategy that allows you to offset capital gains by realizing losses on underperforming assets. In simple terms, you sell investments that have dropped in value to reduce your overall tax liability. This technique is widely used by investors looking to optimize their portfolio's after-tax returns.

How Tax Loss Harvesting Works

The mechanics are straightforward. When you sell a security at a loss, that loss can be used to offset capital gains from other investments. If losses exceed gains, you can typically deduct up to $3,000 per year against ordinary income, with any remaining amount carried forward to future tax years. The key is that the loss must be "realized" — meaning the asset must actually be sold, not just decline on paper.

Rules and Restrictions

The IRS enforces the wash-sale rule, which prevents investors from claiming a loss if they repurchase the same or a "substantially identical" security within 30 days before or after the sale. Violating this rule disallows the tax benefit entirely. To stay compliant, many investors replace the sold position with a similar but not identical asset to maintain market exposure while capturing the loss.

Benefits and Risks

Tax loss harvesting can lower your current tax bill and improve portfolio efficiency over time. However, it is not a free lunch: it reduces your cost basis in the replacement asset, which may lead to larger gains later. It also requires careful tracking and should align with your broader investment strategy rather than being driven purely by tax motives.

In summary, tax loss harvesting is a legitimate and valuable tool for managing investment taxes, but it demands discipline, awareness of wash-sale rules, and a long-term perspective.

Consult a tax professional or financial advisor to determine whether tax loss harvesting fits your portfolio and circumstances. Перейти к подборке →