Target-Date Funds for Beginners: What Target Fund Should I Invest In?

Q: What target fund should I invest in?

Invest in an index-based target-date fund dated closest to the year you turn 65 (e.g., a 2060 fund if retiring around 2060). Ensure the fund series includes the word 'Index' with an expense ratio below 0.15%.

Learn how to select the exact target-date fund for your retirement year, avoid high-cost 401(k) active fee traps, and calculate your optimal equity glide path.

What Fund Should I Pick? ↓
Interactive Fund Matcher ⚙️

Published: August 2026

Analysis by: Beelinger Editorial Team

Category: Retirement Engineering & Asset Allocation

Editorial Disclosure: This guide provides educational mathematical models and fund mechanics. Verify your plan documents and expense disclosures before modifying 401(k) or IRA investment elections.

TL;DR — The Executive Decision Rules

The Quick Formula: Select the fund year closest to your projected 65th birthday (e.g., if you turn 65 in 2062, choose a 2060 or 2065 Target-Date Fund).
The Word to Look For: Always verify that the fund name contains “Index” (e.g., Fidelity Freedom Index 2060 at 0.12% fee instead of Fidelity Freedom 2060 at 0.68%).
Account Constraint: Hold target-date funds exclusively inside tax-advantaged accounts (401k, 403b, Roth IRA, Traditional IRA). Holding them in standard taxable brokerage accounts creates unnecessary annual tax drag from internal rebalancing.

What Is a Target-Date Fund? (The Mechanism)

A Target-Date Fund (TDF) is a diversified “fund of funds” managed as a single investment product. When you deposit $100 into a target-date fund, the manager automatically distributes your money across a globally diversified four-pillar portfolio:

Total U.S. Stock Market: Large, mid, and small-cap companies across all sectors.
Total International Stock Market: Developed and emerging international markets.
Total U.S. Bond Market: Investment-grade government and corporate debt.
Total International Bond Market: Hedged global fixed income.

What Target Fund Should I Invest In? (The Exact Selection Framework)

To choose the right target-date fund as a beginner, evaluate these three concrete decision criteria:

1. Match Your Target Retirement Year

Target-date funds are named by 5-year intervals (e.g., 2055, 2060, 2065). Take the year you turn 65 and pick the nearest fund:

Current Age	Approximate Birth Year	Projected Retirement Year (Age 65)	Target-Date Fund to Pick
20–25	2001–2006	2066–2071	2065 or 2070 Fund
26–35	1991–2000	2056–2065	2055, 2060, or 2065 Fund
36–45	1981–1990	2046–2055	2045 or 2050 Fund
46–55	1971–1980	2036–2045	2035 or 2040 Fund
56+	1970 or earlier	2025–2035	2025 or 2030 Fund

2. Adjust for Your Risk Tolerance (Custom Tilt)

If You Want More Growth (Aggressive): Choose a fund dated 5 to 10 years later than your actual retirement year (e.g., pick a 2065 fund instead of 2055). This forces the fund manager to hold 85%–90% equities for an extra decade.
If You Want Capital Preservation (Conservative): Choose a fund dated 5 to 10 years earlier. This shifts your portfolio into fixed income and bonds sooner.

3. Select Low-Cost Index Providers

Always verify the fund series inside your investment provider menu to ensure you are not paying active management surcharges:

At Vanguard: Vanguard Target Retirement Series (Expense ratio: ~0.08%)
At Fidelity: Fidelity Freedom Index Series (Expense ratio: ~0.12%)
At Charles Schwab: Schwab Target Index Series (Expense ratio: ~0.08%)

What Assets Does a Target-Date Fund Actually Hold?

A Target-Date Fund is a diversified “fund of funds.” When you invest $100, the manager automatically allocates your capital across four foundational asset classes:

Total U.S. Stock Market: Captures large-cap leaders (Apple, Microsoft, NVIDIA) along with mid-cap and small-cap innovators.
Total International Stock Market: Covers equities in Europe, the Pacific, and emerging markets.
Total U.S. Bond Market: Investment-grade U.S. Treasury bonds and corporate fixed income.
Total International Bond Market: Global government bonds hedged against currency fluctuations.

The Glide Path Architecture: How Asset Ratios Shift Over Time

The core engine of a target-date fund is its glide path—a pre-set formula that shifts capital from growth equities to conservative fixed income as you age:

Career Stage	Time Horizon	Equity Allocation (Stocks)	Fixed Income (Bonds/Cash)	Primary Objective
Early Career	30–40 Years (e.g., 2065 Fund)	90% (54% US / 36% Intl)	10%	Maximum long-term compounding
Mid Career	15–20 Years (e.g., 2045 Fund)	80%–85%	15%–20%	Compound growth with moderate volatility dampening
Pre-Retirement	5 Years (e.g., 2030 Fund)	55%–60%	40%–45%	Sequence-of-returns risk defense
In Retirement	At Target Date (e.g., 2025 Fund)	30%–50%	50%–70%	Income generation and capital preservation

“To” vs. “Through” Glide Paths: Why Retirement Date Isn’t the Finish Line

Target-date funds handle the retirement transition using two distinct philosophies:

“Through” Glide Paths (Vanguard, Fidelity, Schwab): The asset allocation continues shifting 10 to 20 years past your retirement date, reaching its final conservative landing point around age 75–80. This protects against longevity risk (outliving your savings).
“To” Glide Paths (BlackRock LifePath, T. Rowe Price): The fund reaches its most conservative fixed-income allocation right at your target year (e.g., 2030). This prioritizes immediate balance protection over continued post-retirement growth.

The 401(k) Fee Trap: Active vs. Index TDFs (The Math Breakdown)

The single most costly mistake retirement savers make is enrolling in an actively managed target-date fund when an index version is available in their plan menu.

Fund Series	Type	Expense Ratio	Annual Cost on $100k	Ending Balance ($10k + $500/mo, 30 Yrs @ 8%)	Lost to Fees
Vanguard Target Retirement	Index	0.08%	$80	$826,500	$12,400
Fidelity Freedom Index	Index	0.12%	$120	$820,300	$18,600
Schwab Target Index	Index	0.08%	$80	$826,500	$12,400
Fidelity Freedom (Active)	Active	0.68%	$680	$741,200	$97,700

⚠️ The Name Trap: Fidelity Freedom vs. Fidelity Freedom INDEX

Inside 401(k) portals, you will frequently see both Fidelity Freedom 2060 (FDKVX) and Fidelity Freedom Index 2060 (FDKLX). The non-index fund charges 0.68% ($680/year per $100k) to let managers trade underlying active assets, while the index version charges just 0.12%. That single missing word costs nearly $80,000 in compounding over 30 years.

Why Target-Date Funds Belong Exclusively in Retirement Accounts

Target-date funds rebalance internally by selling appreciated equities to purchase bonds. Inside tax-advantaged accounts (401k, 403b, Roth IRA, Traditional IRA), these rebalancing trades trigger zero taxable events.

In a standard Taxable Brokerage Account, internal rebalancing generates capital gains distributions that pass through directly onto your tax return. Rule: Use standalone ETFs (like VOO or VTI) in taxable brokerage accounts, and reserve target-date funds for retirement accounts.

⚙️ Interactive Target-Date Fund Selector

Select your target retirement timeline and risk tolerance to determine the optimal fund year and provider structure:

1. Approximate Retirement Year:

2. Investment Philosophy / Risk Profile:

Target Fund: 2065 Series (90% Stocks / 10% Bonds)

You have a multi-decade accumulation horizon. Keep your equity allocation at 90% to maximize compounding. Target: Vanguard Target Retirement 2065 (VLXVX) or Fidelity Freedom Index 2065 (FFIJX).

Account Placement: 401(k), 403(b), or Roth IRA only.

How to Verify Your 401(k) Target-Date Fund in 3 Minutes

Log In to Your 401(k) / IRA Portal: Navigate to the “Change Investments” or “Investment Elections” dashboard.
Inspect the Expense Ratio: Check the fee column. If the expense ratio exceeds 0.15%, switch to the Index version available in your plan menu.
Set 100% Contribution Allocation: Target-date funds are complete, all-in-one engines. Avoid splitting allocations between a TDF and an S&P 500 fund to keep your glide path clean.

Frequently Asked Questions

What target fund should I invest in?

Invest in an index-based target-date fund dated closest to the year you turn 65 (e.g., a 2060 fund if retiring around 2060). Ensure the fund series includes the word “Index” (like Vanguard Target Retirement, Fidelity Freedom Index, or Schwab Target Index) with an expense ratio below 0.15%.

Can I lose money in a target-date fund?

Yes. Target-date funds hold stocks and bonds that fluctuate with broader market movements. However, broad diversification across thousands of global assets protects you from the permanent failure of individual companies.

Should I hold other index funds alongside a target-date fund?

Generally, no. Target-date funds are designed as 100% all-in-one allocations. Adding individual S&P 500 or tech funds over-concentrates your portfolio and disrupts the automated glide path.

What happens when a target-date fund reaches its target year?

At the target date, the fund reaches its most conservative asset allocation (typically 30%–50% stocks and 50%–70% bonds). Over time, many providers merge mature funds into a general “Retirement Income Fund” focused on stable cash distributions and capital preservation.

Need to Compare Individual Index Building Blocks?

Discover how standalone index funds compare against all-in-one target portfolios in our comprehensive guides.

Read the Full Beginner’s Guide →

Which target-date fund should you invest in