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You've built a diversified portfolio. You've allocated assets across stocks, bonds, and other investments based on your risk tolerance and goals. And now you're wondering: should you rebalance every year, or is there a better approach?
The answer isn't as simple as "yes" or "no." Portfolio rebalancing is important, but the ideal frequency depends on your specific circumstances, transaction costs, and how far your portfolio has drifted from its target allocation.
Here's what you need to know about rebalancing frequency and how to determine the right approach for your situation.
What Portfolio Rebalancing Actually Does
Rebalancing is the process of realigning your portfolio back to your target asset allocation. Over time, some investments grow faster than others. If stocks outperform bonds significantly, your portfolio might shift from a 60/40 stock-to-bond allocation to 70/30 without you making any trades.
This drift changes your risk profile. A portfolio that was designed for moderate risk has become more aggressive. If the market declines, you'll experience larger losses than you originally planned for.
Rebalancing serves two purposes:
Risk management: It keeps your portfolio aligned with your risk tolerance. You built your original allocation for a reason—rebalancing ensures you don't accidentally take on more risk than intended.
Disciplined selling high and buying low: Rebalancing forces you to sell assets that have performed well (when they're expensive) and buy assets that have underperformed (when they're cheap). This systematic approach removes emotion from the process.
The Annual Rebalancing Argument
Many financial advisors and investment platforms recommend annual rebalancing. It's simple, predictable, and creates a regular discipline around portfolio management.
The benefits of annual rebalancing:
Simplicity: Set a calendar reminder once a year. Review your portfolio, rebalance if needed, and move on. You don't need to constantly monitor market movements.
Reasonable frequency: Annual rebalancing catches significant drift without overtrading. Portfolios typically don't drift dramatically in a single year unless you're heavily concentrated or markets experience extreme volatility.
Tax planning opportunity: If you rebalance in December, you can coordinate with year-end tax planning. You might harvest tax losses while rebalancing or time capital gains strategically.
The limitations:
Arbitrary timing: There's nothing magical about December 31st. Your portfolio might drift significantly in month three and stay drifted for nine months before you address it.
Potentially too frequent or too infrequent: Depending on market conditions and your portfolio, annual rebalancing might generate unnecessary trading costs, or it might not be frequent enough to catch meaningful drift.
The Threshold-Based Approach
Instead of rebalancing on a fixed schedule, many investors use threshold-based rebalancing. You only rebalance when an asset class drifts beyond a predetermined percentage from its target allocation.
For example: If your target stock allocation is 60%, you might set a 5% threshold. You'd only rebalance when stocks drift to 65% or 55%—a significant enough change to warrant action.
The benefits of threshold-based rebalancing:
Responds to actual drift: You're addressing portfolio risk when it actually exists, not arbitrarily on a calendar date.
Potentially lower trading costs: You're not rebalancing unless there's a meaningful reason to do so. In stable markets, you might go years without rebalancing.
Catches major market moves: During volatile periods when your portfolio drifts rapidly, threshold-based rebalancing addresses the issue immediately rather than waiting for your annual review.
The limitations:
Requires monitoring: You need to check your portfolio periodically to see if thresholds have been breached. This takes more attention than simply marking your calendar once a year.
Potential for overreacting: In highly volatile markets, you might trigger rebalancing frequently, generating excess trading costs and taxes.
The Hybrid Approach: Annual Reviews with Thresholds
Many experienced investors combine both approaches: review annually, but only rebalance if drift exceeds a threshold.
How this works:
Every year, review your portfolio allocation. If any asset class has drifted more than 5% from its target, rebalance. If everything is within 5%, leave it alone.
This approach provides the discipline of annual reviews without the unnecessary trading costs of rebalancing trivial drift.
Example:
Your target allocation is 60% stocks, 30% bonds, 10% real estate.
After one year, your actual allocation is 62% stocks, 28% bonds, 10% real estate.
Stocks are up 2% from target—within your 5% threshold. No rebalancing needed.
After another year, your allocation is 67% stocks, 25% bonds, 8% real estate.
Stocks are up 7% from target—beyond your threshold. Time to rebalance.
What Business Owners Should Consider
As a business owner, your rebalancing decisions should account for your concentrated business risk.
If your net worth is heavily tied to your business: Your investment portfolio should provide diversification and stability. You might use tighter rebalancing thresholds (3-4% instead of 5-7%) to maintain consistent risk exposure. Your business already provides growth exposure—your investments should provide balance.
If you have liquidity constraints: Business owners often face irregular cash flows. If rebalancing requires selling appreciated assets and triggering capital gains taxes, make sure you have the cash to pay the tax bill. You might time rebalancing around planned business distributions.
If you're approaching business exit: As you near retirement and prepare to sell your business, your portfolio rebalancing strategy becomes more important. You might shift to more frequent rebalancing (quarterly or semi-annually) to maintain conservative allocations that protect the wealth you've already built.
Transaction Costs and Tax Implications
Rebalancing isn't free. Every trade generates costs, and selling appreciated assets in taxable accounts creates capital gains taxes.
Before rebalancing, consider:
Trading costs: Most modern brokerages offer commission-free trading, but bid-ask spreads still create small costs. These add up if you're constantly rebalancing.
Capital gains taxes: If you're rebalancing in a taxable account, selling appreciated positions generates taxable gains. The tax cost might exceed the benefit of rebalancing. In these cases, you might rebalance through new contributions or by directing dividends rather than selling positions.
Tax-advantaged accounts: Rebalancing within IRAs or 401(k)s doesn't trigger taxes. If you have both taxable and tax-advantaged accounts, prioritize rebalancing in the tax-advantaged accounts.
The Right Answer for Most Investors
For most business owners with diversified portfolios, a reasonable rebalancing strategy is:
Review annually: Set a specific date each year to review your portfolio allocation.
Rebalance only when drift exceeds 5%: If asset classes have drifted more than 5% from target allocations, rebalance. If drift is within 5%, leave it alone.
Use new money first: Before selling appreciated assets, see if you can rebalance by directing new contributions to underweighted asset classes. This avoids triggering capital gains.
Consider semi-annual reviews for larger portfolios: If you have substantial wealth or approaching retirement, reviewing every six months provides additional risk management without excessive trading.
When to Deviate from the Rules
These guidelines work for most situations, but there are times when deviating makes sense:
After major market moves: If the market crashes or surges dramatically, don't wait until your annual review. Check your allocation and rebalance if necessary.
Before major life events: If you're about to retire, sell your business, or make a major purchase, review your portfolio allocation regardless of when you last rebalanced.
When your goals change: If your risk tolerance changes, your timeline shifts, or your financial situation changes significantly, rebalance to align with your new circumstances.
The Bottom Line
There's no perfect rebalancing frequency that works for everyone. Annual rebalancing is simple and reasonable. Threshold-based rebalancing is responsive to actual risk. Combining both approaches—reviewing annually but only rebalancing when drift exceeds thresholds—provides a balanced strategy for most investors.
What matters more than the specific frequency is that you actually rebalance when needed. The investors who fail aren't those who chose annual over quarterly rebalancing—they're the ones who never rebalance at all and wake up one day to discover their portfolio has drifted dramatically from their intended risk profile.
Choose a rebalancing strategy that you'll actually follow, set reminders to execute it, and stick with the discipline over time. That consistency will serve you better than obsessing over the perfect frequency.
Rebalancing may have tax consequences. Before rebalancing, consider consulting with a tax professional regarding your specific situation.
Diversification and asset allocation do not guarantee profit or protect against loss in declining markets.
Securities offered through LPL Financial, Member FINRA/SIPC. Investment advice offered through Great Valley Advisor Group, a registered investment advisor and separate entity from LPL Financial.
Chesapeake Financial Planners | 2402 Scotlon Ct, Forest Hill, MD 21050 | (410) 652-7868 | www.chesapeakefp.com