Asset Allocation Drift Calculator
Calculate drift between current and target asset allocation to decide if rebalancing is needed. Enter equity to see drift percentage and rebalance flag.
Result
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Enter values above
Result
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Worked example
With the default inputs shown below, this calculator returns the following results:
| Input | Value |
|---|---|
| Target stocks (%) | 60% |
| Current stocks (%) | 55% |
| Portfolio value ($) | $500,000 |
| Result | Value |
|---|---|
| Result | -5.0% |
Values shown are produced by this page in your browser; change any input to update them.
How to use the Asset Allocation Drift Calculator
- Target stocks (%) — default 60%
- Current stocks (%) — default 55%
- Portfolio value ($) — default $500,000
- Press Calculate to update the results instantly.
Frequently asked questions
The gap between your target weights and current ones after markets move. A 60/40 portfolio can quietly become 70/30 after a strong equity year.
Many investors rebalance at 5 percentage points, or 25% of the target weight. Beyond that the portfolio's risk no longer matches the plan.
Direct new contributions to the underweight asset and rebalance inside tax-advantaged accounts first. Selling in a taxable account is the last resort.