Asset Allocation Calculator
Asset allocation — how you divide your money among stocks, bonds, and cash — drives most of your long-term returns and the vast majority of your portfolio's risk, far more than individual stock or fund selection. This calculator uses the classic '110 minus your age' rule to suggest a stock allocation, then adjusts it up or down based on whether you describe yourself as a conservative, moderate, or aggressive investor. The logic is that younger investors can hold more stocks because they have decades to ride out volatility and recover from downturns, while older investors shift toward bonds for stability and income as they approach the years they'll need to spend the money. A 30-year-old using the base rule would hold about 80% stocks; a 60-year-old would hold about 50%. An aggressive investor adds up to 15 percentage points to the stock allocation, while a conservative investor subtracts a similar amount. The result is a starting point, not a prescription — your actual allocation should also reflect your goals, income stability, time horizon, and comfort with seeing your balance fluctuate. Stocks offer the highest expected long-term return but with significant short-term volatility; bonds offer lower returns but far less volatility and income; cash offers safety and liquidity but loses ground to inflation over time. Getting the mix right is more important than picking the best stock, because the overall stock-bond split determines whether your portfolio grows enough to reach your goals and whether you can stomach the ride. Revisit your allocation yearly or after major life events, and shift gradually toward bonds as you age and your time horizon shortens.
Asset Allocation Calculator
Find a stocks/bonds/cash split based on your age and risk profile.
Suggested stock allocation
75%
Growth engine (equities)
Bonds
20%
Cash / equivalents
5.0%
This uses the classic "110 minus your age" rule, adjusted for risk tolerance. Younger investors can hold more stocks because they have time to ride out volatility. Revisit your allocation as you age.
How to Use This Calculator
- 1Enter your current age.
- 2Select your risk tolerance: conservative, moderate, or aggressive.
- 3Read your suggested stock, bond, and cash allocation.
Why It Helps
- ✓Gives a quick, age-based allocation starting point.
- ✓Adjusts for your personal risk comfort.
- ✓Helps balance growth and stability.
- ✓Easy to revisit as your situation changes.
About This Calculator
Asset allocation — how you divide your money among stocks, bonds, and cash — drives most of your long-term returns and the vast majority of your portfolio's risk, far more than individual stock or fund selection. This calculator uses the classic '110 minus your age' rule to suggest a stock allocation, then adjusts it up or down based on whether you describe yourself as a conservative, moderate, or aggressive investor. The logic is that younger investors can hold more stocks because they have decades to ride out volatility and recover from downturns, while older investors shift toward bonds for stability and income as they approach the years they'll need to spend the money. A 30-year-old using the base rule would hold about 80% stocks; a 60-year-old would hold about 50%. An aggressive investor adds up to 15 percentage points to the stock allocation, while a conservative investor subtracts a similar amount. The result is a starting point, not a prescription — your actual allocation should also reflect your goals, income stability, time horizon, and comfort with seeing your balance fluctuate. Stocks offer the highest expected long-term return but with significant short-term volatility; bonds offer lower returns but far less volatility and income; cash offers safety and liquidity but loses ground to inflation over time. Getting the mix right is more important than picking the best stock, because the overall stock-bond split determines whether your portfolio grows enough to reach your goals and whether you can stomach the ride. Revisit your allocation yearly or after major life events, and shift gradually toward bonds as you age and your time horizon shortens.
Disclaimer: This calculator provides estimates for educational purposes only and does not constitute financial, tax, or investment advice. Results depend on assumptions that may not reflect your actual situation.
Frequently Asked Questions
What is the 110 minus age rule?
It suggests holding roughly 110 minus your age in stocks, with the rest in bonds and cash. A 30-year-old would hold about 80% stocks.
Should I hold more stocks if I am aggressive?
Yes. The calculator adds up to 15 percentage points to your stock allocation for an aggressive risk profile, and subtracts it for conservative.
Is this allocation right for everyone?
No. It is a general guideline. Your actual allocation should also reflect your goals, income stability, and time horizon.
What counts as 'cash'?
Cash includes savings accounts, money market funds, and short-term Treasury bills — safe, liquid, low-return assets.
How often should I revisit my allocation?
Review it yearly or after major life events (marriage, children, retirement). Shift toward bonds as you age.
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Written by
James MitchellSenior Financial Analyst & Personal Finance Expert
Certified Financial Planner (CFP) • MBA in Finance, University of Chicago Booth School of Business