Calculate buy/sell amounts to rebalance your investment portfolio. Free online portfolio rebalancing calculator with formula, examples, and FAQ.
Portfolio rebalancing is the process of realigning your investment portfolio back to your target asset allocation. Over time, market movements cause your actual allocation to drift from targets. This calculator shows you exactly how much to buy or sell in each asset class to restore your desired allocation. Regular rebalancing helps manage risk and maintain your investment strategy.
Adjustment = (Target% - Current%) × Total Portfolio ValueFor each asset class, calculate the difference between your target percentage and current percentage, then multiply by the total portfolio value. A positive result means you need to buy more of that asset; a negative result means you need to sell. The total of all adjustments should equal zero (what you sell from one asset funds purchases in another).
| Input | Output |
|---|---|
| Portfolio: $100,000, Current: 70% equity / 30% debt, Target: 60% equity / 40% debt | Sell $10,000 equity, Buy $10,000 debt |
| Portfolio: $250,000, Current: 55% equity / 45% debt, Target: 65% equity / 35% debt | Buy $25,000 equity, Sell $25,000 debt |
| Portfolio: $50,000, Current: 80% equity / 20% debt, Target: 50% equity / 50% debt | Sell $15,000 equity, Buy $15,000 debt |