By Harry Prabandham · Updated September 28, 2026
Investing & Markets
Target-Date Funds: How the Glide Path Works and When It Fits
A target-date fund holds a stock and bond mix that grows more conservative as a chosen year nears. Glide paths, costs, and risk differ by fund.
Target-Date Funds: How the Glide Path Works and When It Fits
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What is a target-date fund?
- A target-date fund, usually a fund of funds, holds a mix of stocks, bonds, and other investments and shifts that mix over time.
- The year in its name is the approximate date an investor expects to retire or start withdrawals.
- The planned shift from stocks toward bonds and cash is called the glide path, and each fund company designs its own.
- Target-date funds can lose money at any time, including near and after the target date, and don't guarantee retirement income.
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Full Guide
What is a target-date fund?
- A target-date fund, usually a fund of funds, holds a mix of stocks, bonds, and other investments and shifts that mix over time.
- The year in its name is the approximate date an investor expects to retire or start withdrawals.
- The planned shift from stocks toward bonds and cash is called the glide path, and each fund company designs its own.
- Target-date funds can lose money at any time, including near and after the target date, and don't guarantee retirement income.
What is the difference between a 'to' and a 'through' glide path?
- A 'to' glide path reaches its most conservative mix at the target date.
- A 'through' glide path keeps reducing stock exposure for years after the target date.
- Two funds with the same year can hold very different amounts of stock, and the prospectus shows each glide path.
Why are they common in 401(k) plans?
- Department of Labor rules allow plans to use target-date funds as a qualified default investment for workers who don't choose.
- They offer diversification and automatic rebalancing in a single holding.
- They reduce the number of ongoing decisions, which some investors value.
- 2026 limits for 401(k) deferrals are $24,500, plus $8,000 catch-up at 50 or $11,250 at ages 60 to 63.
What are the limitations?
- A glide path is set by age, not by your other assets, pension, income, or tolerance for losses.
- It can't coordinate across accounts, so the same mix sits in taxable, traditional, and Roth accounts alike.
- Costs vary: index-based series usually charge less than actively managed ones, and fee differences compound over decades.
- Holding a target-date fund alongside other funds changes the overall allocation it was designed to deliver.
What is worth checking in a plan's target-date fund?
- The glide path, including how much stock it holds at and after the target date.
- The total expense ratio, including the underlying funds' costs.
- Whether the underlying holdings are index or actively managed.
- The SEC notes investors may pick a year other than their expected retirement date, based on risk tolerance and other assets.
When do people move beyond a single target-date fund?
- When significant assets sit across several accounts with different tax treatment.
- When equity compensation or company stock already makes up much of the stock exposure.
- When a pension or other income source changes how much market risk the portfolio needs to take.
- When goals are specific, such as funding an early-retirement bridge before 59½.
Key takeaways
- Target-date funds bundle diversification and a changing allocation into one fund.
- Glide paths and costs vary widely between fund families with the same target year.
- They don't account for outside assets, concentrated stock, or tax location.
- They can lose value near retirement, so it pays to read the glide path before relying on one.
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