The Short Answer
A target-date fund is a single mutual fund — often the default option in workplace retirement plans — that automatically shifts its mix of stocks and bonds to become more conservative as you approach a target year named in the fund, like a “2055 Fund.” It’s designed as a one-fund solution: pick the fund closest to your retirement year, keep contributing, and the fund handles the rebalancing for you.
In short, a target-date fund is a diversified portfolio and a rebalancing plan rolled into one investment.
How a Target-Date Fund Works
- Choose the fund with the year closest to when you expect to retire or need the money.
- The fund holds a mix of stock funds, bond funds, and sometimes other assets.
- A built-in “glide path” automatically shifts the mix to be more conservative as the target year gets closer.
- One purchase gives you a full, diversified, professionally managed portfolio.

Target-Date Fund vs. Building Your Own Portfolio
- Target-date fund — one decision, automatic rebalancing and glide path, simple to maintain, moderate fees.
- Do-it-yourself portfolio — more control over the exact mix, potentially lower fees using individual index funds, but requires you to rebalance and adjust it yourself over time.
A Simple Example
Example: A 30-year-old planning to retire around 2060 chooses a “2060 Fund,” which starts out holding roughly 90% stocks and 10% bonds to capture long-term growth. Over the following decades, the fund gradually sells off stock funds and buys more bond funds. By the time the target year arrives, the same fund might hold closer to 50% stocks and 50% bonds — all without the investor placing a single trade.
Tips for Using a Target-Date Fund
- Pick one fund and stick with it — holding several target-date funds at once usually just adds unnecessary overlap.
- Check the fees, since they vary between fund providers for a similar glide path.
- Choose the year based on when you need the money, not necessarily your exact birth year, if you want a more or less conservative path.
- Avoid mixing in a lot of other individual investments that duplicate what the fund already holds.
The Bottom Line
A target-date fund packages a diversified portfolio and an automatic rebalancing plan into a single investment built around the year you’ll need the money. It’s a popular default choice in 401(k) plans precisely because it requires so little ongoing decision-making. For investors who want simplicity over fine-tuned control, a target-date fund can be a complete, low-maintenance solution.
Frequently Asked Questions
What is a target-date fund in simple terms?
It’s a single fund that automatically shifts from mostly stocks to a more balanced mix of stocks and bonds as a target year, often your expected retirement year, approaches.
Which target-date fund should I choose?
Most people choose the fund with the year closest to when they expect to retire or need the money. You can pick an earlier or later year to be more or less conservative than the default path.
Do target-date funds guarantee a return?
No. They’re still invested in the market and can lose value, especially in the stock portion. The glide path manages risk over time, but it doesn’t eliminate it.
Can I hold other investments alongside a target-date fund?
Yes, but keep in mind the fund already holds a diversified mix, so adding a lot of overlapping individual stocks or funds can throw off the balance it’s designed to maintain.
Are target-date funds only for retirement accounts?
They’re most common in 401(k)s and IRAs, but some are also available in regular taxable brokerage accounts for other long-term goals with a known target year.
Do target-date funds have higher fees than index funds?
Often somewhat, since you’re paying for the automatic rebalancing and fund selection, but fees vary widely by provider. It’s worth comparing the fund’s expense ratio against building a similar mix yourself.
This article is for educational purposes only and is not investment, financial, or tax advice. Investing involves risk, including the possible loss of principal. Market values fluctuate and past performance does not guarantee future results. Consider your own situation and consult a qualified financial professional before making investment decisions.