According to the Wealthfront 2025 tax loss harvesting report, the tax-loss strategy had saved Wealthfront clients an estimated $161 million in 2025 and a cumulative amount of $1.27 billion since its inception. While these may be mere numbers to the untrained eye, they translate to actual money saved in tax payments by wealth management companies through strategic tax-loss harvesting. Tax-loss harvesting is among the legal strategies that offer a guaranteed calculable return from the workings of tax codes and not market conditions. The assumption among individual investors is that the tax-loss strategy is unknown to many or is only useful for large investors. Neither of these claims is true.
Tax-loss harvesting entails selling positions that are currently under their cost base, thereby recording the loss on the books. Then offset the realized capital loss against the capital gains realized elsewhere in the portfolio. Alternatively, the loss can offset ordinary income by up to $3,000 annually. Then you reinvest the loss to a comparable asset to keep your investment exposure to the same level. Through such moves, investors are able to benefit from a tax reduction without reducing their investment exposure. As noted in IRS topic 409, net capital losses can offset up to $3,000 of ordinary income. Excess losses can carry over to the next tax year infinitely.
Tax loss harvesting involves using unrealized losses to reduce taxes in the current tax year by converting the loss into a usable form immediately. As explained earlier, the process relies on the nature of capital gains and losses. Net losses from the two are used before calculating any tax liabilities.
How Tax-Loss Harvesting Actually Works
Let us use an illustration. You have an S&P 500 ETF worth $7,500 but was purchased at $10,000, translating to a loss of $2,500. In addition, you have an Apple asset that made a $4,000 capital gain from the initial purchase price. If there is no tax loss harvesting, the tax liability will be calculated using the total gain. But with the harvesting method, you can sell the ETF to realize the capital loss and thus reduce the net gain to $1,500. With a long-term capital gains rate of 15 percent for single taxpayers with income between $49,450 and $553,850 in 2026, the saving is $375. The important thing is that you immediately reinvest the proceeds in the similar fund to keep your investment exposure to the same levels.
In addition to the tax deferral aspect, tax loss harvesting is effective due to the reduced taxes owed in the future from the new investment position with the lowered cost basis. Taxes on the sale of the investment are deferred but will be incurred in the future. In a situation where you earn seven percent annual return during that period, a dollar of the deferral becomes worth almost twice in ten years, i.e., $1.97.
Long-term capital gains tax rates are as follows: 0% in 2026 for single filer income up to $49,450 and $98,900 in 2026 for joint income up to $553,850. The income level of 15% capital gain taxes in 2026 ranges from $49,450 to $553,850 single and from $98,900 to $553,850 in 2026 for joint. Any higher income faces a rate of 20 percent for both statuses. Short-term capital gains are taxed at regular income tax brackets, which range from 10 percent to 37 percent depending on your status. The difference in the rates explains why it is important to have the asset for over a year before selling.
The Wash Sale Rule: The One Trap That Kills Most Harvesting Attempts
The biggest mistake that investors make in tax loss harvesting is ignoring the wash sale rule. Under section 1091, a loss cannot be deducted if one buys a “substantially identical” asset within thirty days prior or subsequent to the sale.
Thirty days is the crucial time frame to remember: the 30 days prior to the date of selling the asset at a loss, the actual date of sale, and thirty days following the sale. If you sold a Vanguard S&P 500 ETF (VOO) at a loss and buy it back after three weeks, you are disallowing the loss. While the disallowed loss will eventually be recovered as an increased cost basis on the new asset, the current loss will not be deductible. This disallows the use of the loss to lower current taxes.
The rule also applies to “substantially identical” assets. For instance, selling VOO ETF and buying SPY is disallowed as the latter also tracks S&P 500 just like the former. The opposite of the case above is buying VOO ETFs and then purchasing VTI, which is Total US Market Index. While the indexes may seem to be tracking the same things, there are differences that disallow the wash sale rule. Another example is buying an individual stock like Nvidia and then immediately replacing it with a semiconductor ETF. There is no clear direction from the IRS on this issue, therefore conservative investors tend to replace their assets with broad-based indexes.
As the wash sale rule applies to all your account, you need to stop dividend reinvestment in your other accounts in case the loss harvest is being executed in one of your brokerage accounts. Therefore, all accounts that include the “substantially identical” securities must stop dividend reinvestments for 31 days.
At present, the rule does not apply to cryptocurrencies since IRS treats the digital asset as property. Thus, one can sell the Bitcoin, then immediately buy it back and claim a loss.
Who Benefits Most from Tax-Loss Harvesting
Tax-loss harvesting is best suited to individual investors in the 22 percent federal income tax bracket and above, taxable accounts with capital gains and portfolio with $50,000 of invested assets. Even smaller portfolios can enjoy the benefit of tax-loss harvesting. However, costs and time involved in manually executing harvesting reduces its effectiveness in small portfolios.
The ideal candidate is an investor in the 37 percent federal tax bracket that has short-term capital gains to offset. If one harvests $10,000 in losses to offset $10,000 short-term gains, one can save about $3,700 in federal income taxes in the current tax year. The opposite situation is that the $10,000 of losses offsets $10,000 capital gains in a tax bracket with a 15 percent tax rate. That way one saves only $1,500 in federal income taxes.
Three scenarios limit the benefit that one gets out of tax-loss harvesting. These are if you are in the 0% long-term capital gains rate (income under $49,450 in 2026), have all your investments in tax-advantaged accounts or a portfolio that consists of unrealized gain positions only. In the former case, you have no capital gain losses to offset. The latter two prevent harvesting at all since they are not taxable at all or have no unrealized gain positions.
Automated Harvesting vs. DIY: What the Data Shows
To my mind, the most overlooked harvesting opportunity pertains to investors who have made lump sum investments around S&P 500 market peaks. Anyone who has invested $50,000 in December 2021 or January and February of 2022, saw their portfolio fall 20 percent, and had to suffer through it was sitting on a harvesting opportunity that was not fully appreciated by the majority of retail investors, focused more on loss than opportunity.
The effectiveness of automated harvesting through platforms like Wealthfront, Betterment, or Schwab Intelligent Portfolios is higher than that of a DIY approach for the vast majority of investors, since the harvesting opportunity check happens every day on such platforms rather than annually as in a traditional approach. According to Wealthfront research, their tax-loss harvesting service yielded an annual average estimated tax benefit worth 1.63 percent of the portfolio value over the last decade to clients using a Classic portfolio.
If you have an inclination not to track individual lots, monitor wash sale windows, pick replacements, and plan rebalancing around opportunities, then the case for automated platforms stands particularly strong. The $0.25 percent annual advisory fee that Wealthfront charges is more than paid off several times over by the benefit for clients generating gains on their portfolios. Other services like Betterment and Schwab Intelligent Portfolios provide similar automation and even cheaper.
The DIY tax-loss harvesting through a taxable brokerage account managed either at Fidelity or Charles Schwab can be a practical approach for investors interested in manual lot picking, replacement selection, and wash sale monitoring. The key benefit of a DIY approach is complete control over the process of selecting lots, replacement securities, and timing your trades around wash sale windows. A portfolio containing highly appreciated stocks that have moved adversely for you can yield more precise results than a generic algorithm, unable to take the whole of your tax picture into consideration.
The $3,000 Ordinary Income Deduction and Loss Carryforwards
The $3,000 deduction from ordinary income that is available if your capital losses exceed gains is one of the most overlooked tax provisions for individual investors. Should your capital losses exceed capital gains in a year, the excess amount up to $3,000 becomes deductible against your salary and other sources of ordinary income on your federal taxes form. If you are in a 22 percent bracket, this means $660 saved on taxes. At a 37 percent tax bracket, it comes to $1,110 of savings.
Any unused losses exceeding $3,000 become carried forward for offsetting against future income with no expiration date. Thus, should you record $20,000 in losses in a bad year, while having no gains to offset against them, your tax benefit is going to be $3,000 in the first year, followed by $17,000 of losses carried forward. When in a year with a good performance you earn $15,000 in capital gains, the losses from last year wipe out the gain and give you an extra $2,000 carryforward for next year.
The carryforward rule makes tax-loss harvesting particularly advantageous in a bear market year. The market downturn in 2022 when the S&P 500 Index fell by 19.4 percent and growth-oriented portfolios lost 40 percent or more, offered ample opportunities to investors with long investment horizons who managed to bank losses and apply them in the subsequent bull markets in 2023 and 2024.
FAQ: Tax-Loss Harvesting in 2026
Can you use tax-loss harvesting in a Roth IRA or 401(k)?
No, tax-loss harvesting only applies to losses in your taxable brokerage accounts. Tax-advantaged retirement accounts like Roth IRA or Traditional IRA or 401(K) accounts offer tax benefits unrelated to the loss harvesting mechanism. The growth is tax-free in Roth and tax-deferred in traditional 401(K). Therefore, should your investment money reside in your retirement accounts primarily, the loss harvesting opportunity becomes available only once you set aside some money in your taxable brokerage account.
How much does tax-loss harvesting actually save the average investor?
The benefits vary depending on the volatility of your portfolio and your tax bracket. According to Wealthfront statistics, their annual average benefit equals 1.63 percent of your portfolio, or $1,630 on a $100,000 portfolio. However, in volatile years like 2022, clients enjoyed much higher yields from the service, depending on your individual circumstances. The ordinary income deduction allows for $660-$1,110 in tax savings yearly for you, again, provided you have capital losses.
What is the wash sale rule and how do I avoid triggering it?
The IRS wash sale rules disallow a capital loss if you purchase the same fund or stock in 30 days following or preceding its sale. To comply, wait until the 31st day post-sale to repurchase the security, or replace the security purchased with another one similar but non-substantially identical. For example, instead of selling your Vanguard S&P 500 fund, sell Fidelity total market fund. The wash sale rules are applied to all accounts you control, and hence, you must disable any dividend reinvestment program in other accounts for the time being.
Is tax-loss harvesting worth it for small portfolios?
For smaller portfolios below $10,000 in assets, the tax savings are likely to be insufficient to justify the complexity of a DIY loss harvesting procedure. The only provision that is universally applicable regardless of the account size is your ability to claim a maximum of $3,000 of losses against your ordinary income. At a modest fee, betterment automates the process for accounts with a small amount of holdings, saving you the effort.
What to Do in the Next 24 Hours
Sign in to your account at Fidelity, Charles Schwab, or Vanguard, and open the report showing your unrealized gains and losses at the moment. Most brokerages provide the feature as a special tool. Identify positions at a loss that you planned to keep for the long term. If you have any such positions currently, see whether you have capital gains from selling securities throughout the year. If yes, you have a harvesting opportunity to take action immediately.
The choice of the replacement security requires some deliberation, as you should keep in mind that the new security will have to maintain your allocation profile and sector diversification without purchasing the original security again. If you sold the U.S. equity position, a broad total market fund will be sufficient as a replacement. In case of international positions, switch between a developed markets fund and a total international fund. In any case, consult an expert on the matter to ensure that you can proceed.
Tax-loss harvesting is not limited to the presence of a bear market. If you have been investing in your portfolio for a prolonged period of time, some recent additions will necessarily be trading below acquisition price after a market dip, especially within the first few days following the downturn. Building a habit of reviewing your portfolio and checking for harvesting opportunities a few times a year is going to be rewarding.