Portfolio Rebalancing Guide
How calendar and threshold rules help keep allocation aligned with a plan
Why Rebalancing Matters
Portfolio weights drift when assets move at different speeds. Rebalancing compares current weights with the target mix from an asset allocation calculator and brings risk exposure back toward the plan.
Calendar-Based Rebalancing
Calendar rules review the portfolio on a fixed schedule such as monthly, quarterly, or annually. They are easy to follow but may create unnecessary trades when allocations have barely moved.
Threshold-Based Rebalancing
Threshold rules act only when an asset class drifts beyond a preset band, such as five percentage points from target. This can reduce activity while still limiting allocation drift.
Tax, Fee, and Cash Flow Effects
Taxes, spreads, fund fees, and transaction costs can change the value of a rebalance. Use the ROI calculator to compare after-cost results, and consider whether new cash flows can restore weights without extra turnover.
When Rebalancing Can Be Counterproductive
Rebalancing too often can add costs, create taxable events, or interrupt a plan that has not meaningfully drifted. For goal planning, check whether the current allocation still supports the timeline in the retirement calculator.
Calculator check
Use the asset allocation calculator to test current versus target weights, then review the possible return impact with the ROI calculator. Include transaction costs and taxes before deciding whether a rebalance is worth modeling further.
Q&A
How often should a portfolio be reviewed?⌄
The review cadence should match the investor's complexity, tax situation, and target allocation policy. Many plans use a simple calendar plus threshold rule.
Is rebalancing the same as market timing?⌄
No. Rebalancing follows a predefined allocation rule rather than a short-term forecast.
How often should I review a rebalancing plan?⌄
Many investors model both calendar and threshold reviews, then choose a process they can apply consistently. The calculator should include trading costs, taxes, and new contributions before showing a rebalance.
Disclaimer
This guide is for education and calculator-based planning only. It is not investment, tax, or legal advice. Costs, taxes, and risk tolerance should be reviewed with qualified professionals when needed.