While no one enjoys seeing their investments decline in value, market volatility can present a valuable opportunity to optimize your tax position. This strategy, known as tax-loss harvesting, is all about strategically balancing investment gains and losses to reduce your annual tax bill.
Understanding Capital Gains and Losses
Whenever you sell an investment in a taxable account, such as a stock or mutual fund, you will realize either a capital gain or a capital loss.
- Short-Term: This applies to investments held for one year or less. Any gains are taxed at your ordinary income tax rate, which can be as high as 37% in 2025.
- Long-Term: This applies to investments held for more than one year. Long-term capital gains enjoy a much lower, preferential tax rate of 0%, 15%, or 20% in 2025, depending on your income.
How Losses Offset Gains
The core of tax-loss harvesting is using realized losses to cancel out realized gains. The IRS has a specific hierarchy for this:
- Like-Kind Offsetting: Your short-term losses are first used to offset your short-term gains. Similarly, your long-term losses are used to offset your long-term gains.
- Cross-Offsetting: If you have more losses of one type than gains, you can then use those excess losses to offset gains of the other type. For example, if you have more long-term losses than long-term gains, you can use the remaining loss to reduce your short-term gains.
- Ordinary Income: If you still have a net loss after all gains have been offset, you can use up to $3,000 of that loss to reduce your ordinary income for the year. Any remaining loss can be carried forward indefinitely to offset gains or income in future years.
The “Wash Sale” Rule
To prevent investors from simply selling a stock for a loss and immediately buying it back, the IRS created the “wash sale” rule. This rule disallows a tax deduction for a loss if you buy the same or a “substantially identical” security within 30 days before or after the sale. To avoid this, you can:
- Wait at least 31 days to repurchase the same security.
- Buy a different but similar security that serves the same role in your portfolio (e.g., selling one S&P 500 index fund and buying a different one from another fund provider).
By strategically using this rule, you can realize a tax loss without significantly changing your portfolio’s investment exposure.