The Mechanics of IRA Rebalancing

Rebalancing is the disciplined process of realigning the weightings of your IRA portfolio to maintain your original target asset allocation. Over time, different investments grow at different rates, which can cause your portfolio to become skewed toward a specific asset class. For example, a strong year in the stock market might shift a planned 70 percent stock and 30 percent bond allocation to an 80/20 split. Rebalancing involves selling a portion of the over-performing assets and using the proceeds to purchase more of the under-performing ones, ensuring your risk level remains consistent with your long-term goals.

One of the greatest advantages of rebalancing within an IRA, as opposed to a taxable brokerage account, is the absence of immediate tax consequences. In a standard account, selling stocks that have increased in value would trigger capital gains taxes, which can erode your total returns. Because an IRA is a tax-advantaged vehicle, you can buy and sell assets within the account without incurring any tax liability. This allows you to make purely strategic financial decisions based on your target allocation rather than worrying about the tax bill associated with the trade.

Investors typically choose between two primary methods for timing their rebalancing: a calendar-based approach or a percentage-based trigger. A calendar approach involves reviewing the IRA at set intervals, such as once or twice a year, to make necessary adjustments. A percentage-based approach, often called “threshold rebalancing,” occurs only when an asset class moves away from its target by a specific amount, such as 5 percent. Both methods are effective, though the threshold approach is often favored by active managers for its ability to capture market swings more precisely during periods of high volatility.

The psychological benefit of rebalancing is that it forces a “buy low, sell high” mentality, which can be difficult for many investors to execute emotionally. When an asset class is performing poorly, the natural instinct for many is to avoid it; however, rebalancing requires you to move money into those lagging assets while they are relatively inexpensive. Conversely, it requires you to trim positions in assets that are currently booming. By sticking to a mechanical rebalancing plan, you remove emotion from the equation and maintain a diversified portfolio that is better prepared for future market shifts.

As you move through the 2026 tax year, it is important to remember that rebalancing is also an ideal time to reassess your overall risk tolerance. As you get closer to your retirement date, your target allocation should naturally become more conservative to protect your accumulated capital. Rebalancing provides a regular opportunity to not only return to your current targets but also to gradually shift those targets toward safer investments like bonds or money market funds. This proactive management ensures that your IRA remains a reliable source of income when you eventually transition from the accumulation phase to the distribution phase.

Source: Financial Industry Regulatory Authority (FINRA), “Smart Investing: Rebalancing Your Portfolio” and IRS Publication 590-B (2026 Guidelines).