Asset Allocation Glide Path Calculator

Calculate your optimal asset allocation glide path with our easy-to-use calculator. A glide path shows how your investment mix should change over time, typically becoming more conservative as you approach retirement. This strategic approach helps manage risk while maintaining growth potential throughout your investment journey.

Created by Luis GonzalezLast updated: June 16, 2026

How to Use This Calculator

1
Enter Age & Allocation Targets
Input your current age, target retirement age, current and target stock percentages, other asset percentage, and choose a glide path style (Early & Steady, Even Pace, or Stay in Stocks Longer).
2
Review Results
See Avg. Annual Stock Change, Current Risk Score, and Target Risk Score cards. The Insights panel shows current/target allocations, years to retirement, total stock reduction, risk score change, and glide path style. The chart and table show year-by-year allocations.

Example Calculation

A 35-year-old investor wants to reduce stock allocation from 80% to 40% by retirement at age 65, with 10% in alternative assets, using a linear glide path.

Current Age (years)

Target Retirement Age (years)

Current Stocks Percentage (%)

Target Stocks Percentage (%)

Additional Assets (%)

Glide Path Style

Linear

Results

Avg. Annual Stock Change

-1.33% per year

Current Risk Score

8.0/10

Target Risk Score

4.0/10

Insights card shows 80% stocks / 10% bonds / 10% other current allocation, 40% stocks / 50% bonds / 10% other target, 30 years to retirement, 40pp total stock reduction, 8.

Tips

1.33% Annual Reduction Means 60% Stocks at Age 50

At the midpoint (age 50), the linear glide path puts you at 60% stocks / 30% bonds / 10% other. The conservative path reaches 51.7% stocks by 50 (shifting faster early), while the aggressive path is still at 70% stocks at 50 (shifting more in the final years).

Risk Score Drops 4 Points — From Growth to Balanced

An 8.0/10 risk score (80% stocks) is growth-oriented. By retirement at 4.0/10 (40% stocks), you're in a balanced-conservative position. Each 10% reduction in stocks lowers the risk score by 1 point. To reach 3.0/10, you'd target 30% stocks instead.

10% in Alternatives Stays Constant — Bonds Absorb the Shift

The 10% other assets allocation remains fixed throughout. As stocks drop from 80% to 40%, bonds rise from 10% to 50% — a 40pp increase that mirrors the 40pp stock decrease. Increasing alternatives to 15% would reduce the bonds range to 5-45%.

Conservative Path Front-Loads De-Risking for Sequence Risk

The conservative (Early & Steady) path uses a square-root curve that shifts to bonds faster in early years. By year 15, you're already at 51.7% stocks vs 60% with linear. This protects against sequence-of-returns risk — poor returns in the decade before retirement hurt the most.

Plan Your Stock-to-Bond Shift Over 30 Years

The Asset Allocation Glide Path Calculator maps how your portfolio should transition from growth-oriented to conservative as you approach retirement. A 35-year-old with 80% stocks targeting 40% at retirement (age 65) reduces stocks by 1.33% per year over 30 years — dropping their risk score from 8.0/10 to 4.0/10. Bonds rise from 10% to 50%, absorbing the entire shift while 10% in alternatives stays constant.

The Glide Path Formula

The calculator uses a power curve to model different de-risking speeds:

Stocks at Year t = Current Stocks + (Target - Current) × (t / Years)^exponent
Bonds = 100% - Stocks - Other Assets
Risk Score = (Stocks% / 100) × 10
Annual Stock Change = |Current - Target| / Years to Retirement

Exponent values control the curve shape:

Conservative (Early & Steady): exponent = 0.5 (front-loaded)
Linear (Even Pace):            exponent = 1.0 (uniform)
Aggressive (Stay in Stocks):   exponent = 2.0 (back-loaded)

💡 To see how your target-date portfolio performs on a risk-adjusted basis with Sharpe ratio and Jensen's Alpha, try our Asset Management Ratio Calculator.

Example: Age 35 to 65 Linear Glide Path

35-year-old, 80% stocks, 40% target at retirement, 10% other assets, linear style:

Metric	Value	Context
Avg. Annual Stock Change	-1.33%/year	Even pace — equal adjustment each year
Current Risk Score	8.0/10	High risk — growth-oriented
Target Risk Score	4.0/10	Moderate — balanced-conservative
Current Allocation	80/10/10	Stocks / Bonds / Other
Target Allocation	40/50/10	Stocks / Bonds / Other
Midpoint (Age 50)	60/30/10	Exactly halfway between start and target
Total Stock Reduction	40pp	Over 30 years
Risk Score Reduction	4.0 points	From growth to balanced

The linear path creates a steady 1.33% annual reduction. At the midpoint (age 50), the portfolio is exactly 60% stocks — halfway between the 80% start and 40% target. The conservative path would already be at 51.7% stocks by age 50, while the aggressive path would still be at 70%.

💡 Once you've set your target allocation, use our Asset Allocation Rebalancing Calculator to determine the exact dollar amounts to buy and sell each year.

Three Glide Path Styles Compared

All three styles start at 80% stocks and end at 40%, but the path between differs significantly. At the midpoint (age 50, year 15): Conservative reaches 51.7% stocks (already shifted 70% of the way), Linear is at 60.0% (exactly 50% shifted), and Aggressive is at 70.0% (only 25% shifted). Choose conservative if you prioritize sequence-of-returns risk protection, linear for simplicity, or aggressive if you want maximum growth potential before the final decade.

Frequently Asked Questions

What is an asset allocation glide path?

A plan for gradually shifting your portfolio from stocks to bonds as you approach retirement. Starting at 80% stocks at age 35, a linear glide path reduces stocks by 1.33% per year to reach 40% stocks at age 65. This systematic de-risking protects accumulated wealth while maintaining growth potential during the accumulation phase.

How does the risk score work?

Risk score = (stock percentage / 100) × 10. So 80% stocks = 8.0/10 (high risk, growth-oriented) and 40% stocks = 4.0/10 (moderate risk, balanced). The score provides a quick reference for portfolio aggressiveness. Scores above 7 are growth-oriented, 4-7 are balanced, below 4 are conservative.

What's the difference between the three glide path styles?

All three start at 80% stocks and end at 40%. Linear reduces stocks evenly (1.33%/year). Conservative (exponent 0.5) front-loads the reduction — reaching 51.7% stocks at the midpoint vs 60% for linear. Aggressive (exponent 2.0) back-loads it — still at 70% stocks at the midpoint. Conservative is better for sequence risk protection; aggressive maximizes growth potential.

What is sequence-of-returns risk?

The danger that poor market returns just before or early in retirement can permanently deplete your savings. A 30% market drop at age 63 with 80% in stocks is devastating — it wipes out 24% of your portfolio. With the glide path's 42.7% stocks at age 63, the same drop only impacts 12.8%. Front-loading de-risking (conservative path) provides the most protection.

Why keep 10% in other assets?

Alternative assets (REITs, commodities, gold) provide diversification beyond the stock/bond mix. They often have low correlation with both stocks and bonds, which can reduce overall portfolio volatility. The 10% stays constant throughout the glide path while the stock-to-bond shift handles the primary de-risking.

How often should I adjust my allocation?

Annual rebalancing aligns with most glide path calculations. With a 1.33% annual stock reduction, you'd sell enough stocks and buy enough bonds each year to match the schedule. More frequent adjustments (quarterly) add trading costs with minimal benefit. Less frequent (every 2-3 years) means larger trades but still achieves the target by retirement.