It's Only July. Why Tax-Loss Harvesting Shouldn't Wait Until December.

Three ways 2026 has already tested portfolios

By late July, 2026 had already delivered three separate jolts to the market:

• Tesla fell sharply the day after its Q2 earnings report on July 23, missing Wall Street's profit expectations and posting a steep drop in operating margin.
• Semiconductors sold off broadly in June, after a wave of cautious guidance from a major chipmaker dragged the Nasdaq down roughly 4% in a single session — its worst day in more than a year — with the slide continuing into July.
• Oil spiked in late February and early March, when a military escalation involving Iran sent prices sharply higher and rattled global equity markets for days.

Each of those events left some investors holding positions worth less than they paid. That's not a reason to panic — it's a reason to check whether tax-loss harvesting makes sense now, rather than waiting until the final weeks of the year.

What tax-loss harvesting actually is

Tax-loss harvesting means selling an investment that's worth less than you paid for it, so you can use that loss to offset gains elsewhere — and, within limits, offset a portion of your ordinary income. It's a bookkeeping strategy, not a market call: it doesn't require believing a stock will keep falling, just recognizing a loss that already exists on paper and putting it to use.

How losses and gains net against each other

The IRS nets short-term gains and losses (on assets held one year or less) against each other first, and long-term gains and losses (on assets held longer than a year) against each other separately. If one category ends up negative, that net loss then offsets the net gain in the other category. This matters because short-term gains are taxed as ordinary income (up to 37% at the federal level), while long-term gains get preferential rates of 0%, 15%, or 20% — so a loss that offsets a short-term gain is generally doing more work than one offsetting a long-term gain.

If your losses exceed your gains for the year, you can deduct up to $3,000 ($1,500 if married filing separately) of the excess against ordinary income like wages. Anything beyond that carries forward to future tax years indefinitely, keeping its original short-term or long-term character until it's fully used.

The 30-day trap: the wash-sale rule

Here's where good intentions go wrong. The wash-sale rule disallows your loss if you buy the same security — or one the IRS considers "substantially identical" — within 30 days before or after the sale. That's a 61-day window in total to stay clear of. Sell a stock at a loss on Monday and buy it back three weeks later, and the loss is disallowed; it gets added to the cost basis (the price used to calculate gain or loss on a future sale) of the new shares instead of being usable right away.

The rule applies across every account you (and, per IRS guidance, your spouse) control — a taxable brokerage account, a traditional IRA, and a Roth IRA. And if the repurchase happens inside an IRA, the disallowed loss isn't just delayed — it's permanently gone, with no basis adjustment to recover it later.

Why mid-year, not December

The usual advice is to review your portfolio for harvesting opportunities in December, once the year's picture is mostly clear. The problem: mutual funds typically estimate their year-end capital gains distributions — payouts of the fund's realized gains to shareholders — in October or November and finalize them in December. The actual amounts hinge on market moves and shareholder redemptions right up until the record date, the cutoff that decides who owes the tax. If you're holding the fund on that date, you owe tax on the distribution regardless of how briefly you've held the shares — a bill that can arrive as a surprise for anyone who waited until year-end to plan.

Checking your positions mid-year, while a loss from an earlier event like a spring selloff may still exist, gives you more runway. There's time to harvest a loss, wait out the wash-sale window if you want to reposition into something similar, and still have months left to react to whatever the market does next — rather than squeezing all of that into the last two weeks of December.

What this isn't

Tax-loss harvesting isn't a reason to sell a position you'd otherwise want to keep, and it isn't a guarantee of a lower tax bill — the benefit depends entirely on your own gains, losses, and tax situation for the year. It's also not a strategy specific to any one stock or sector; the same mechanics apply whether the loss came from a single-stock earnings drop, a sector-wide selloff, or a broad market pullback.

This article is educational commentary on public market events and general tax mechanics, not personalized investment or tax advice. Consult a qualified tax professional about your own situation.