Tax-loss harvesting lets you offset capital gains and potentially reduce your taxable income. By reinvesting the proceeds from a loss into a similar, but not identical, asset, you stay invested while capturing a valuable tax benefit. It’s a strategy that may be beneficial in volatile markets, where frequent fluctuations can potentially allow for the capture of losses without significantly altering your overall asset allocation.
Implementing tax-loss harvesting as part of a broader financial plan can enhance your after-tax returns and make your portfolio more efficient. This could potentially contribute to long-term growth. But plenty of investors still miss out, usually because they’re unaware of how it works or how to use it effectively.
Key Takeaways
- Tax-loss harvesting allows you to strategically sell underperforming investments to reduce your tax liability, without abandoning your long-term investment plan.
- You can use realized capital losses to offset capital gains and up to $3,000 of ordinary income per year.
- Reinvesting in a similar (but not substantially identical) asset lets you stay invested while still capturing tax benefits.
- The IRS wash-sale rule disallows the loss if you repurchase the same or a substantially identical investment within 30 days. That means timing and selection matter.
- Tax-loss harvesting is most effective within taxable investment accounts and doesn’t apply to retirement plans like IRAs or 401(k)s.
- State-specific rules may affect how losses are treated on your state return, making professional guidance essential.
- A tax-aware investment strategy — including harvesting losses — can be a powerful way to enhance long-term after-tax portfolio growth.
What Is Tax-Loss Harvesting and How Does it Work?
Tax-loss harvesting is a tax-smart investment strategy that helps reduce your taxable income by selling securities at a loss and using that loss to offset capital gains. This tactic applies specifically to taxable investment accounts, like brokerage accounts, and doesn’t apply to tax-deferred retirement plans, like IRAs or 401(k)s.
You trigger a capital gain when you sell an asset for more than you paid. But if another investment in your portfolio has declined, selling it at a loss can help offset those gains. Doing so reduces your overall tax liability. At the end of the year, your net capital gain — or loss — is calculated by subtracting capital losses from capital gains. If losses exceed gains, you can deduct up to $3,000 per year against ordinary income and carry forward any additional losses for future years.1
So, what does this look like in action?
Let’s say you sell a stock that made a $10,000 profit. This gain would typically be subject to capital gains tax. But if you also sell a different holding that’s down $6,000, you’ll only owe tax on the $4,000 net gain. If you had no gains this year but sold a losing investment for a $3,000 loss, you could use that amount to reduce your taxable income — a potential savings of several hundred dollars, depending on your tax bracket.
Tax-loss harvesting is a strategy that can potentially allow you to stay in the market. You can reinvest the proceeds from the sale into a similar, but not “substantially identical,” investment. Doing so maintains your portfolio’s risk exposure and growth potential while capturing the tax benefit. The swap must avoid violating the IRS wash-sale rule (which we’ll discuss below), which doesn’t allow the deduction if you repurchase the same, or substantially identical, asset within 30 days.2
If you leverage this strategy throughout the year (not just at year-end), you can improve after-tax returns and keep your investment goals on track.
Benefits of Tax-Loss Harvesting
Understanding how tax-loss harvesting works is just the beginning. The real value lies in the tangible benefits you can enjoy when thoughtfully integrating it into your broader investment strategy.
One of the most immediate advantages is the potential reduction of your taxable income. Harvesting investment losses to offset capital gains (or up to $3,000 in ordinary income) lets you minimize your current tax liability and keep more of your returns working for you. Over time, these savings can compound when reinvested, contributing to long-term portfolio growth.
Another benefit? Strategic flexibility. If you’re expecting a higher tax year — say, from a business windfall, property sale or bonus — harvesting losses during market dips can help you better manage your tax bracket. Similarly, in years when capital gains are elevated, tax-loss harvesting offers a way to smooth the impact and make the most of your investment timeline.
When used as part of a broader strategic tax-efficient planning approach, tax-loss harvesting complements other lesser-known tactics, like identifying overlooked tax deductions, to create a more comprehensive plan tailored to your financial goals.
Tax-loss harvesting aims to minimize losses and position your portfolio for potential growth through strategic, forward-looking decisions.
Tax-Loss Harvesting Tips
Understanding how tax-loss harvesting works means knowing the IRS rules that govern it — and the missteps that could cost you a valuable deduction. From offsetting capital gains to observing deadlines, the following tips can help you execute your strategy with confidence.
Wash-sale rule
When implementing a tax-loss harvesting strategy, be aware of the IRS’ “wash-sale” rule. This rule is intended to prevent investors from selling at a loss for the sole purpose of obtaining a tax deduction as they continue to maintain their current investment allocation.
The wash-sale rule is triggered when an investor sells an investment at a loss and, within 30 days before or after the sale, buys back a “substantially identical” security. A wash sale is also triggered when an investor’s spouse or a company controlled by the investor buys a substantially identical security during the 30 days before or after selling a security at a loss.
If your security transaction triggers the wash-sale rule, the tax loss will be disallowed. The rule also applies when you sell an investment at a loss in a taxable account then buy it back in a tax-advantaged account.
Offsetting capital gains with losses
One of the key advantages of tax-loss harvesting is the ability to reduce your capital gains taxes. Investors can use realized losses to offset capital gains; the amount you can claim to lower your income is the lesser of $3,000 or your total net loss. If the net capital loss exceeds the limit, you can advance it to later years.3
Doing so becomes especially useful in years with significant gains from stock sales, business exits or real estate transactions. When you deliberately harvest losses, you may be able to fully or partially neutralize those gains and reduce your total tax bill. It’s one of the most accessible ways to make tax-efficient investing a part of your broader wealth strategy.
State-specific rules
While federal tax laws govern how tax-loss harvesting works, the state-level treatment of capital losses can differ. Some states, like New Jersey4 or Pennsylvania,5 don’t allow capital losses to offset ordinary income. Others might restrict carryforwards or limit loss deductions altogether.
Because of these differences, you need to coordinate with a tax advisor who understands both federal and state-specific tax laws. Doing so helps ensure your harvesting strategy works not just nationally but also locally. Especially if you plan to relocate or already file in multiple states.
Tax-loss harvesting deadlines
You must complete and settle all tax-loss harvesting trades by December 31 to count toward that tax year. Because most trades take two business days to settle (T+2), you’ll want to make final adjustments well before year-end to avoid missing the window.
Waiting until the last week of December can leave you vulnerable to market closures, volatility, processing delays or missed opportunity. Instead, at Creative Planning, we work throughout the year to implement tax-loss harvesting opportunities, allowing us to harness intra-year market volatility for the benefit of the investor.
Tax-Loss Harvesting Examples
As an example, let’s consider Joan Investor, whose income places her in the 37% income tax bracket and whose capital gains tax rate is 20%. Joan has the following unrealized gains and losses within her investment portfolio:
- Stock A – Held for 652 days, unrealized gain of $250,000
- Stock B – Held for 556 days, unrealized loss of $150,000
- Stock C – Held for 95 days, unrealized loss of $80,000
Joan completes the following trades throughout the year:
- Stock D – Sold for a realized gain of $200,000 after holding for 425 days (long-term capital gains)
- Stock E – Sold for a realized gain of $120,000 after holding for 125 days (short-term capital gains, taxable as ordinary income)
Without tax-loss harvesting, Joan would owe the following taxes on her trades:
| Transaction Type | Gain | Tax Rate | Tax Owed |
|---|---|---|---|
| Long-Term (Stock D) | $200,000 | 20% | $40,000 |
| Short-Term (Stock E) | $120,000 | 37% | $44,400 |
| Total Taxes Owed | $84,400 |
If Joan decides to realize losses by selling Stocks B and C, she could use those losses to offset a portion of her gains as follows:
| Adjusted Gain (After Harvesting) | Gain | Tax Rate | Tax Owed |
|---|---|---|---|
| $200,000 – $150,000 (LT) | $50,000 | 20% | $10,000 |
| $120,000 – $80,000 (ST) | $40,000 | 37% | $14,800 |
| Reduced Tax Liability | $24,800 |
With this approach, Joan saves $59,600 in taxes. That’s a clear example of how thoughtful tax-loss harvesting contributes to creating a tax-efficient portfolio.
However, if she repurchases a “substantially identical” stock within 30 days, the IRS wash-sale rule will disallow the losses.
FAQs on Tax-Loss Harvesting
What are common strategies for tax-loss harvesting?
Common strategies often start with regular portfolio monitoring, especially during volatile periods. Investors might identify positions that have declined below their cost basis and sell them to realize a capital loss. Next, they reinvest those proceeds in a similar asset to maintain market exposure. This key element is how tax-loss harvesting works without triggering the wash-sale rule.
Some might adopt year-round harvesting. Rather than waiting until year-end, they pair short-term losses and gains to offset income taxed at higher rates. Work with a tax advisor to determine if this strategy makes sense.
Is tax-loss harvesting worth it?
Tax-loss harvesting is a strategy that may offer meaningful value for some investors, particularly those in higher tax brackets. By using investment losses to offset gains and reduce ordinary income, you may lower your annual tax bill without derailing your portfolio strategy.
It really depends on your specific situation; your account type, income level, investment goals and tax exposure all play a role. Tax-loss harvesting works most efficiently when integrated into a broader strategy to create a tax-efficient portfolio and long-term growth.
Maximize Your Tax Savings With Creative Planning
Tax-loss harvesting is just one part of a comprehensive strategy to reduce tax liability and grow your wealth. At Creative Planning, we take a proactive, personalized approach to tax planning; we help clients understand how tax-loss harvesting works and where it fits within their broader financial picture.
