The Tax Move Most Investors Miss After a Market Selloff

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The market just handed you a tax gift, and most investors are going to let it expire unused. When portfolios drop the way they have this week, the instinct is to feel loss. The institutional perspective is very different: a significant drawdown is a tax asset, and the window to capture it is time-limited.

Tax-loss harvesting is not a fringe strategy or a loophole. It is a standard practice among institutional portfolio managers, wealth advisors at the largest banks, and anyone managing meaningful taxable assets. The reason it receives so little attention in retail financial media is partly because brokerages earn more when you hold, and partly because the mechanics require explanation that most financial coverage skips in favor of more emotionally engaging content.

This issue breaks it down completely: how the strategy works mechanically, why the current tariff-driven volatility has created an unusually large harvesting window, and the specific steps you can take this week regardless of your portfolio size. The window closes when markets recover. The time to act is before the bounce, not after.

The core mechanic is straightforward. When you sell an investment at a loss in a taxable account, that loss can be used to offset capital gains realized elsewhere in your portfolio during the same tax year. If you have realized gains this year from any sales, dividends, or distributions, harvested losses reduce the tax you owe on those gains dollar for dollar.

If you have no capital gains to offset, the IRS allows you to deduct up to $3,000 of net capital losses against ordinary income per year. Losses beyond the $3,000 limit do not disappear. They carry forward indefinitely to future tax years, where they can offset future gains. A large loss harvested today can reduce your tax bill for multiple years to come.

Here is the key insight that makes this more powerful than most people realize: you do not have to stay out of the market after you sell the losing position. You can immediately reinvest the proceeds into a similar but not identical asset. This keeps your market exposure and your investment thesis intact while locking in the loss for tax purposes. Done correctly, you maintain full economic participation in any market recovery while generating a meaningful tax deduction. You get the loss on paper without actually missing the rebound.

The constraint is the wash-sale rule, which is the one rule you absolutely must understand before executing this strategy. The IRS prohibits you from claiming a loss if you repurchase the same security, or one that is considered substantially identical, within 30 days before or after the sale. This 61-day window, 30 days before through 30 days after, is the wash-sale window. Violate it and the loss gets disallowed, pushing your cost basis into the replacement position instead.

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Tax-loss harvesting opportunities appear every time the market sells off meaningfully. What makes the current environment particularly valuable is the breadth of the selloff. Tariff-driven volatility has created losses across a wide range of asset classes simultaneously: broad index funds, individual equities, international holdings, sector ETFs, and even some bond funds that were expected to be more defensive.

In a typical year, you might find meaningful loss-harvesting opportunities in one or two positions, usually sector-specific underperformers or individual names that had a bad quarter. Right now, investors with broadly diversified portfolios are sitting on losses across multiple holdings simultaneously. The aggregate tax value of those losses, if properly harvested before markets recover, can be substantial.

Consider a concrete example. Someone holding $200,000 in a diversified equity portfolio that has dropped 15 percent over the past month is sitting on approximately $30,000 in unrealized losses. If that investor is in the 24 percent federal income tax bracket and their state has a 6 percent capital gains rate, harvesting those losses is worth roughly $9,000 in combined tax savings this year alone, on top of any carryforward value for future years. That is real money, generated not by earning more or taking additional risk, but purely by managing the tax consequences of what you already own.

The practical challenge in tax-loss harvesting is finding suitable substitution assets that maintain your investment exposure without triggering the wash-sale rule. This is where institutional investors have historically had an operational edge, because they employ specialists to maintain pre-approved swap lists for every position in their portfolios. You can build a personal version of this framework with a bit of upfront research.

For broad index ETFs, the substitution pairs are well established. If you own VOO, which tracks the S&P 500 via Vanguard, you cannot swap into SPY from State Street or IVV from iShares, because all three track the same index and are likely to be considered substantially identical by the IRS. However, you can swap into VTI, which tracks the total U.S. stock market and includes thousands of small and mid-cap stocks beyond the S&P 500. Alternatively, you could use SCHB from Schwab or ITOT from iShares, both of which track different indices covering the broad U.S. market. Any of these alternatives will participate in a market recovery while surviving wash-sale scrutiny.

For sector ETFs, the substitution pairs are often even cleaner because different providers typically track different underlying indices for the same sector. A technology ETF from Vanguard tracks a different index than a technology ETF from iShares, meaning the holdings overlap significantly but the funds are not substantially identical. The same applies to international ETFs, bond funds tracking different maturity ranges, and real estate investment trust funds from competing providers.

For individual stocks, the substitution logic is different. You cannot swap one company for itself or for a company so similar that they move in near-lockstep. However, you can sell an individual stock at a loss and immediately purchase an ETF that holds that company among a broad basket of others. The ETF is not substantially identical to the individual stock even if that stock is a top holding, because the fund's return is driven by dozens or hundreds of positions simultaneously.

Open your brokerage account and navigate to the unrealized gains and losses section for every taxable position you hold. Most major platforms display this directly in your portfolio view. Note every position showing a loss, along with the cost basis, current value, and the holding period: whether the position has been held for more or less than one year matters for how the loss is categorized.

Short-term losses, from positions held less than one year, offset short-term gains first. Short-term gains are taxed at ordinary income rates, which can be as high as 37 percent federally. Long-term losses offset long-term gains first. Long-term gains receive preferential rates of 0, 15, or 20 percent depending on your income level. Understanding which category your losses fall into tells you exactly how valuable each harvesting opportunity is in after-tax dollars.

Sum all the losses across your taxable positions. This is your gross harvesting opportunity. For each position you intend to harvest, confirm you have not purchased any shares of that security in the past 30 days, and identify your substitution asset before executing the sale. The goal is to enter the buy and sell orders nearly simultaneously to minimize the time you spend out of the market. Many brokerages allow you to enter both orders as linked transactions.

Tax-loss harvesting is a taxable account strategy only. There is no tax benefit to harvesting losses inside a traditional IRA, Roth IRA, or 401(k), because gains and losses inside those accounts do not affect your current-year tax liability. Focus exclusively on your taxable brokerage accounts when identifying harvesting candidates.

Transaction costs have become much less of a concern in the era of commission-free trading, but the bid-ask spread on thinly traded ETFs can still eat into the benefit on smaller positions. As a general rule of thumb, focus your harvesting efforts on positions where the harvestable loss is at least $1,000 and where the estimated tax savings clearly exceeds any spread costs on the trade. For liquid, high-volume ETFs like VOO, VTI, or SPY, the spread is negligible and essentially irrelevant to the calculation.

Mark your calendar for 31 days after each sale date. At that point, the wash-sale window has closed and you can repurchase your original position if you prefer it to the substitution asset. Compare the two positions at that time and make a deliberate decision rather than an automatic one. Sometimes the substitute turns out to be a better holding than the original, and you keep it permanently.

One more nuance worth understanding: if you harvested losses earlier in the same tax year and used them to offset short-term gains, any additional losses harvested now will first offset any remaining short-term gains, then long-term gains, and then up to $3,000 of ordinary income. Keep a running log of all harvested losses for the year so you always know exactly how much tax capacity remains to be deployed. Your brokerage's year-end tax summary will show realized gains and losses, but tracking it in real time throughout the year gives you a clearer picture and helps you make smarter decisions about when to realize additional gains strategically.

The investors who capture tax-loss harvesting opportunities consistently are not working harder than everyone else. They have systems in place: alerts that notify them when positions cross loss thresholds, a documented list of pre-vetted substitution assets ready to deploy, and the process discipline to act quickly when the opportunity arises rather than spending time researching from scratch during a market decline.

Building that system is a one-time investment of a few hours that generates returns every time the market sells off significantly for the rest of your investing life. Platforms like Make.com can automate portfolio monitoring so you receive a notification when specific positions cross a loss threshold, removing the need to check your portfolio obsessively during volatile periods.

If you want a consolidated view of your taxable holdings across multiple accounts so you can identify harvesting candidates across your entire portfolio at once, connecting all your accounts through Empower gives you that consolidated picture in a single dashboard. The clearer your visibility, the faster you can act when the opportunity is open.

The institutional edge in tax management is not secrecy or sophistication. It is a process. Build the process once, document it clearly, and every future market selloff becomes a tool rather than a threat. The market is handing you a gift this week. The only question is whether you have the system in place to accept it.

To your financial intelligence,

Taylor Voss

Money Systems Lab

Want the complete tax-loss harvesting worksheet with substitution asset pairs for the most common ETF holdings and a step-by-step execution checklist? Reply with the word HARVEST and I will send it your way.