Tax-Loss Harvesting for HNW Investors

Tax-loss harvesting is a strategy that involves selling investments that have declined in value to realize a capital loss. That loss can then be used to offset capital gains realized elsewhere in your portfolio, reducing the total amount of tax you owe for the year. For high-net-worth investors with diversified portfolios spanning multiple asset classes, the opportunities for harvesting are substantial.

How Tax-Loss Harvesting Works

When you sell a security at a loss, the IRS allows you to use that loss to offset gains from other investments. If your losses exceed your gains in a given year, you can deduct up to $3,000 of net losses against ordinary income, with any remaining losses carried forward to future tax years. The key is to replace the sold position with a similar (but not substantially identical) investment to maintain your target allocation and avoid triggering the wash-sale rule.

The Wash-Sale Rule

The IRS wash-sale rule prohibits you from claiming a tax loss if you repurchase the same or a substantially identical security within 30 days before or after the sale. High-net-worth investors should work with their advisor to identify appropriate replacement securities, such as swapping one S&P 500 index fund for another that tracks a different but correlated index, or substituting individual stocks within the same sector.

Systematic Harvesting Across Accounts

For investors with multiple taxable accounts, the benefits of tax-loss harvesting multiply. A systematic approach involves continuously scanning each account for harvesting opportunities throughout the year rather than waiting until December. Market volatility, sector rotations, and individual stock pullbacks all create windows for harvesting that may close quickly. At Whitwell & Co., we monitor client portfolios daily to capture these opportunities.

Long-Term Impact on After-Tax Returns

Research from major financial institutions consistently shows that disciplined tax-loss harvesting can add between 0.5% and 1.5% per year in after-tax return, depending on market conditions and the size of the portfolio. Over a 20- or 30-year investment horizon, that incremental improvement compounds significantly. For an investor with $5 million in taxable assets, the cumulative tax savings can reach hundreds of thousands of dollars.