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Target-Date Fund (TDF) Investing Basics

Here is how a target-date fund automatically adjusts its holdings as your target year gets closer.

  1. What a target-date fund is

    A target-date fund (TDF) automatically adjusts its mix of stocks, bonds, and other assets over time, aiming toward a specific future date -- typically the year an investor plans to retire -- named in the fund itself.

  2. The glide path concept

    The 'glide path' is the asset-allocation curve a TDF follows over time: it holds a higher share of riskier assets like stocks while the target date is far off, then gradually shifts toward more conservative assets like bonds as that date approaches.

  3. How to choose a vintage year

    You typically pick a fund named for the year closest to your expected retirement -- such as a 2045 or 2050 fund -- and the fund's managers handle the ongoing asset-mix adjustments from there.

  4. A common fit inside retirement accounts

    Because it rebalances on its own, a TDF is widely used as a 'set it and forget it' long-term holding inside retirement accounts such as a 401(k), an IRA, or a workplace pension's default investment option, where manually rebalancing every position yourself would otherwise be tedious.

  5. Check the fee

    Because it actively manages an entire asset-allocation strategy for you, a TDF's expense ratio tends to run higher than a plain index fund's. Over a long investing horizon, that recurring fee difference is worth comparing directly.

  6. What to keep in mind

    Because a TDF rebalances according to a fixed, generic schedule, it may not perfectly match your specific circumstances. It is worth periodically checking whether its glide path still fits your actual retirement plans and risk tolerance.

A fund that adjusts itself as retirement approaches

A TDF is a convenient option for an investor who does not want to manually adjust their asset mix over and over, and it is especially common as a long-term holding inside retirement accounts. This page is general educational content about how target-date funds work, not investment advice -- investing carries the risk of losing principal, so do your own research or consult a professional before investing.

'To' retirement vs 'through' retirement

TDFs generally follow one of two glide-path philosophies. A 'to' fund reaches its most conservative allocation right around the target year and holds it flat afterward, on the assumption you will draw the balance down soon after. A 'through' fund keeps some allocation shifting even after the target date, on the assumption the money needs to keep growing for years into retirement. Two funds with the same target year can hold noticeably different amounts of stock, so it is worth checking which philosophy a specific fund follows.

Frequently Asked Questions

What happens to a TDF after its target year passes?

It typically keeps a fairly conservative asset mix, weighted more toward bonds, for some period after the target year, though the exact glide path depends on whether the fund follows a 'to' or 'through' retirement design.

Does a TDF always outperform a plain index fund?

No. A TDF is designed to manage a stable, automatically shifting asset allocation, not to maximize returns, so depending on market conditions it can underperform a pure equity index fund.