Asset Allocation Calculator — Free Tool

Portfolio Mix Finder Results update as you adjust the inputs

Your age 30

Used as a starting point for a common age-based rule of thumb

Risk tolerance

Conservative

Moderate

Aggressive

How much short-term volatility you can tolerate for potentially higher long-term returns

Time horizon 20 years

How long until you'll need to start drawing on this money

70%

Stocks

25%

Bonds

Cash

Est. average annual return

7.2%

long-run historical estimate

Best historical year

+31%

for this mix, approx.

Worst historical year

-18%

for this mix, approx.

$10,000 growth at this mix's estimated average return

Projected growth

Year	Projected Value	Growth	Stocks	Bonds	Cash

Understanding asset allocation

Why this mix, and why it's just a starting point

Asset allocation is how you divide your portfolio across the three broad building blocks: stocks (higher growth potential, higher volatility), bonds (lower growth, more stability, generate income), and cash (lowest return, highest safety and liquidity). The right mix balances your need for growth against your ability to stomach losses along the way.

This tool uses a widely cited rule of thumb, subtracting your age from 110 to 120 to estimate a reasonable stock percentage, then adjusts up or down based on your stated risk tolerance and time horizon. It is a starting point for thinking, not a personalized recommendation — your actual ideal mix also depends on other assets you hold, your income stability, and goals this calculator doesn't know about.

The historical return, best-year, and worst-year figures shown are rough blended estimates based on long-run historical averages for U.S. stocks and bonds. Actual future returns, including entirely different best and worst years, are never guaranteed.

Why age matters

Younger investors generally have decades to ride out market downturns, so a heavier stock allocation makes sense. As retirement approaches, shifting toward bonds and cash reduces the risk of a market crash arriving right when you need to start withdrawing.

Rebalancing

Over time, strong stock performance can push your actual allocation more aggressive than intended. Rebalancing, periodically selling a bit of what's grown and buying more of what's lagged, keeps your portfolio aligned with your target mix. Many investors rebalance once or twice a year.

Risk tolerance vs. risk capacity

How much volatility you can emotionally handle (tolerance) and how much your actual financial situation can absorb (capacity) aren't always the same. A stable income and long time horizon give you more capacity for risk even if your emotional tolerance for it is lower.

Frequently asked questions

What people ask about asset allocation

Is the "110 minus your age" rule still relevant?+

It's a simplified heuristic, not a scientific formula, but it remains a reasonable starting conversation. Because people are living and working longer, many planners now suggest 110 or 120 minus age rather than the older "100 minus age" version, to avoid becoming too conservative too early.

Should retirement accounts and taxable accounts have the same allocation?+

Not necessarily. Many investors think about their total portfolio across all accounts combined, sometimes placing higher-growth assets in tax-advantaged accounts and more tax-efficient holdings in taxable accounts, a concept called asset location.

What counts as a "bond" in this calculator?+

This tool treats bonds as a broad category including government treasuries, investment-grade corporate bonds, and bond funds or ETFs. Different bond types carry different risk and return profiles, so within your bond allocation there's still room for further diversification.

Does this account for real estate or other alternative assets?+

No, this tool models a simplified three-way split of stocks, bonds, and cash. Real estate, REITs, commodities, and other alternative assets can play a role in a broader portfolio but are outside the scope of this calculator.

How often should I revisit my allocation?+

Most planners suggest reviewing your allocation at least annually, and after any major life event, a new job, marriage, a home purchase, or approaching retirement, since your risk tolerance and time horizon can shift meaningfully with circumstances.

The bigger picture

The best allocation is one you'll actually stick with

An aggressive allocation that looks optimal on paper is worthless if a market downturn scares you into selling at the bottom. A slightly more conservative mix you can hold through a rough year, without panic-selling, will often outperform a theoretically better allocation you can't emotionally sustain.

Use this tool as a conversation starter with yourself, or with a financial advisor, about where you actually stand, not a final answer to lock in and forget.

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