Tax-Smart Strategies for Rebalancing Portfolios

Large stock market gains, coupled with the significant volatility seen in 2026, have left many investors holding portfolios that no longer reflect their original plans. If you haven't reviewed your asset allocation recently, now is a great time to take a closer look.

When you initially built your investment portfolio, you likely chose a specific mix of asset classes based on your risk tolerance, age, and performance goals. Over time, certain investments naturally outperform others. This uneven growth shifts your portfolio away from your target allocation, potentially exposing you to more risk than you originally bargained for.

Rebalancing brings your investments back into alignment with your long-term goals. However, the process of selling off top-performing assets can trigger hefty tax bills if you aren't careful. At SD Mayer, we believe in making smart decisions that protect your wealth. By taking a strategic approach, you can restore balance to your portfolio while successfully minimizing your tax burden.

The Basics of Portfolio Rebalancing

When you started investing, you probably distributed your funds across different asset classes, like money market funds, stocks, and bonds. You might have even divided them further into subcategories like large-cap U.S. stocks or municipal bonds.

When a particular asset class performs exceptionally well, it naturally takes up a larger percentage of your overall portfolio. To keep your risk level in check, you need to regularly monitor your accounts and rebalance them. This typically involves selling some of the appreciated assets that have become overweighted and using the proceeds to buy into underweighted categories.

The catch is that selling appreciated investments generates capital gains. Unless these assets are safely housed inside tax-advantaged retirement accounts, the IRS will want a cut of those profits.

Navigating Taxable Brokerage Accounts

When you file your tax return, the IRS requires you to net your recognized capital gains against your recognized capital losses for the year. If your gains outpace your losses in your taxable accounts, you are left with a net capital gain. The amount of tax you pay depends heavily on how long you held the assets.

If you hold an investment for more than a year before selling, you benefit from the federal long-term capital gains rate. Most individuals will pay a 15% rate on these earnings. Depending on your overall income level, this rate could drop to 0% or climb to 20%. You may also be subject to a 3.8% net investment income tax (NIIT) on all or part of your net long-term gain, along with potential state income taxes.

Conversely, selling investments held for one year or less triggers short-term capital gains taxes. These earnings are taxed at your ordinary federal income tax rate, which can reach as high as 37%. You might also owe the 3.8% NIIT and applicable state taxes on these short-term gains.

Sometimes, your taxable accounts will generate a net capital loss for the year. You can deduct this loss against up to $3,000 of ordinary income, or $1,500 if you are married and file separately. Any remaining net capital loss can be carried forward to offset gains in future years.

The Power of Tax-Advantaged Retirement Accounts

Retirement accounts play a unique role in your overall tax strategy. When you sell assets held within a 401(k) or IRA, the resulting gains and losses alter your account balance, but they do not trigger immediate tax consequences. The tax impact only arrives when you begin taking withdrawals.

For non-Roth accounts, the taxable portion of your withdrawals is taxed at your ordinary federal income tax rate. This generally includes any amounts tied to investment appreciation or pretax contributions.

Roth accounts offer even more flexibility. Qualified withdrawals from a Roth IRA or Roth 401(k) are generally entirely income-tax-free at the federal level, meaning you will not pay taxes on the appreciation of those assets.

Strategic Tax Mitigation Tactics

At SD Mayer, we always look for innovative ways to help you retain more of your hard-earned money. If you hold both taxable and tax-advantaged accounts, you should view them as a single, unified portfolio.

Leverage Retirement Accounts First

If your overall portfolio has become overloaded with large-cap U.S. stocks, look at where those stocks are located. By selling the appreciated stock held inside your retirement accounts first, you can effectively rebalance your portfolio without incurring any current-year capital gains taxes.

Utilize Tax-Loss Harvesting

Sometimes, achieving your desired asset allocation requires selling appreciated assets in a taxable brokerage account. When this happens, review your portfolio for underperforming assets that you can sell at a loss. This strategy, known as tax-loss harvesting, allows you to use recognized losses to offset your capital gains. Keep in mind that selling assets at a loss inside a retirement account will not provide a current-year tax deduction.

Prioritize Long-Term Holdings

If you must sell appreciated assets in a taxable account and lack the losses to offset them, prioritize selling investments you have held for more than a year. This ensures the resulting profits are taxed at the much more favorable long-term capital gains rate.

Plan Your Asset Location

As you reinvest the proceeds from your sales into underweighted classes, think critically about asset location. Place investments with the highest expected long-term returns into your Roth accounts, allowing that massive growth to compound and eventually be withdrawn tax-free. If you prefer to engage in short-term trading, execute those trades inside a tax-advantaged retirement account to shield yourself from the steep 37% short-term capital gains rate.

Look Beyond the Tax Bill

Taxes carry a massive financial impact, but they should never be the sole driver of your financial strategy. As you rebalance your portfolio, you must also weigh your risk tolerance, time horizon, and long-term investment goals.

We know that managing investments and tax liabilities can feel complicated, but we believe in making financial clarity accessible. As your trusted advisors, the team at SD Mayer is here to help you navigate these decisions with confidence. Contact us today to develop a customized rebalancing strategy that keeps your portfolio on track and your tax bill in check.