ClearHow Much Risk Should You Actually Be Taking, By Age
Key takeaways
- Age-based rules like "110 minus your age" are a rough starting point, not a precise formula.
- What actually matters is your real time horizon for each pool of money, not your birth year.
- Money needed within 1-3 years belongs in cash regardless of age; money needed 10+ years out can absorb more stock volatility, also regardless of age.
- Rebalancing once or twice a year keeps your actual risk level from drifting away from your target mix.
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Two 45-year-olds can hold completely different portfolios and both be doing the right thing — one's retiring at 55, the other at 70, and the popular age-based math treats them as identical. That's the core problem with rules like "subtract your age from 110 to get your stock allocation": age is only a stand-in for the thing that actually matters, which is how many years remain until you need the money.
Why age is used as a shortcut
Stocks are volatile in the short term but have historically outgrown bonds and cash over long periods, so the rule assumes younger investors have decades to ride out downturns while people closer to retirement have less time to recover — shifting the mix gradually from stocks toward bonds as retirement nears. The shortcut breaks down whenever the calendar and the real timeline disagree: a taxable account earmarked for a house down payment in 3 years shouldn't be invested like retirement money 30 years out, even for the same person. It also blurs risk tolerance (how you react to a 30% drop) with risk capacity (how much loss your timeline can actually absorb) — age-based rules mostly speak to the second one.
The question that actually matters
For each pool of money, ask: when will I actually need to spend this? Money needed within 1-3 years generally belongs in cash or stable holdings, regardless of age; money needed 10+ years out can generally absorb more volatility, also regardless of age. In practice, a 35-year-old with a stable job and a 30-year runway might reasonably hold 80-90% stocks in retirement accounts, while a 60-year-old planning to retire at 62 might hold closer to 50-60%, shifting further toward bonds as the withdrawal date nears. Neither number is "correct" for everyone that age — it depends on the actual plan, not the birthday.
Keeping your mix on target
Whatever allocation you land on, rebalancing once or twice a year — selling a bit of whatever's grown overweight and buying more of what's underweight — keeps your actual risk level from silently drifting away from your intended one as markets move.
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Frequently asked questions
What does the "110 minus your age" rule mean?
It's a rule of thumb suggesting you subtract your age from 110 (or 120) to get the percentage of your portfolio that should be in stocks, with the rest in bonds or cash.
Is an age-based rule accurate for everyone the same age?
No. Two people the same age can have very different actual timelines — different planned retirement ages or different goals for the money — so the rule only approximates what really matters, which is time horizon.
What's the difference between risk tolerance and risk capacity?
Risk tolerance is how you emotionally react to a drop like a 30% decline. Risk capacity is how much loss your actual timeline can financially absorb. Age-based rules mostly speak to risk capacity, not tolerance.
How often should I rebalance my portfolio?
Once or twice a year is generally enough to keep your actual allocation from drifting away from your intended target as markets move.
How much in stocks might a 35-year-old with a 30-year runway hold?
Such an investor might reasonably hold 80-90% stocks in retirement accounts, though the right number depends on the actual plan, not just the age.