Glide Path Calculator

Visualize how your stock/bond allocation should shift from accumulation to retirement

Current Allocation
90/10
stocks / bonds %
At Retirement
50/50
stocks / bonds %
Equity Shift
-40%
stocks reduced by retirement
110 − Age Rule
80%
suggested stock % today
Your Details
30 yrs
yrs
65 yrs
yrs
90 yrs
yrs
90%
%
50%
%

Allocation continues shifting after retirement for longevity protection — used by most target-date funds.

30%
%
Common Rules of Thumb

Click any rule to apply it as your current stock allocation.

Asset Allocation Over Time
Stocks / Equities
Bonds / Fixed Income
Allocation Snapshots
AgeStocksBonds
30Now90%10%
3584%16%
4079%21%
4573%27%
5067%33%
5561%39%
6056%44%
65Retire50%50%
7046%54%
7542%58%
8038%62%
8534%66%
9030%70%

How the Glide Path Calculator works

A glide path is the planned shift of your portfolio from aggressive to conservative as retirement approaches — typically reducing stocks in favor of bonds to trade some growth for stability when you'll soon depend on the money. This calculator maps your allocation by age from your chosen start, retirement, and end points.

It also distinguishes "to" versus "through" glide paths: a "to" path reaches its most conservative allocation at retirement and holds; a "through" path keeps de-risking gradually into retirement, reflecting that a 30-year retirement still needs growth.

The formula
Rule of thumb: Stock % ≈ 110 − age
  • A 40-year-old ≈ 70% stocks / 30% bonds
  • Variants use 100 − age (conservative) or 120 − age (aggressive)

Tips to get the most out of it

  • The riskiest stretch is the years just before and after retirement — sequence-of-returns risk — which is exactly where the glide path flattens risk.
  • Rebalance on a schedule (annually is common) or when allocations drift beyond a band like ±5%.
  • Target-date funds implement a glide path automatically; check whether yours is a "to" or "through" design.

Frequently asked questions

Why reduce stock exposure near retirement?

Because a major crash just before or after retirement — when withdrawals begin — does disproportionate damage that later recoveries can't fully repair (sequence-of-returns risk). Bonds don't grow as fast, but they cushion exactly the years when you're most vulnerable.

What's the difference between a "to" and "through" glide path?

A "to" path hits its final, most conservative mix at retirement day and stays there. A "through" path is still de-risking at retirement and continues for another decade or two. "Through" keeps more growth for a long retirement; "to" prioritizes stability sooner.

Is 110-minus-age a good rule?

It's a reasonable starting point, updated from the older 100-minus-age as lifespans lengthened. Adjust for your risk tolerance, pension or Social Security coverage, and how flexible your spending could be in a downturn. Rules of thumb start the conversation; they don't finish it.

Should I ever hold 100% stocks?

Some young investors with decades of runway and proven tolerance for volatility do. The danger isn't the math — it's selling in a panic. An allocation you can hold through a 40% drawdown beats a theoretically optimal one you'll abandon.

From the Knowledge Base

Glide Path: How Your Investment Mix Should Change Over Time

Why a 25-year-old and a 60-year-old shouldn't have the same portfolio, and how to plan your stock-to-bond transition.

Read the guide