Portfolio Rebalancing Calculator
Exact buy/sell amounts to hit target allocation.
Your Portfolio
Target total: — should equal 100%
Total portfolio
Trades to rebalance
How to Use This Calculator
2. Add or remove rows as needed; targets should total 100%.
The tool shows exactly how much to buy or sell of each asset to return to your target mix.
Calculation Method
A positive number means buy; negative means sell. Total portfolio = sum of all current values.
Source: Standard target-allocation rebalancing arithmetic.
Drifted up
Stocks above target
Sell stocks, buy bonds
New cash
Add cash row
Deploy to underweight assets
60/40
60% stocks / 40% bonds
Trades to restore mix
Frequently Asked Questions
What is portfolio rebalancing?
Periodically buying and selling assets to bring your portfolio back to its target allocation after market moves cause drift.
How often should I rebalance?
Common approaches are annually or when an asset drifts more than ~5 percentage points from target. There is no single right answer.
Does rebalancing trigger taxes?
In taxable accounts, selling appreciated assets can create capital gains. Rebalancing with new contributions or in tax-advantaged accounts avoids this.
Why rebalance at all?
It enforces a disciplined buy-low/sell-high process and keeps your risk level aligned with your plan.
Should targets total 100%?
Yes. The tool warns you if your target percentages do not add up to 100%.
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Last updated: May 24, 2026