Best ETFs for 401k Plans in 2026

How We Chose These ETFs

Selecting the right ETFs for 401k investing investors requires a careful evaluation of multiple factors. We analyzed dozens of funds across the industry and narrowed our recommendations based on the following criteria. Each factor was weighted according to its importance for investors in this specific category, ensuring that our picks are truly optimized for your goals.

1. Available in most — Available in most employer 401k plan lineups
2. Low expense ratios — Low expense ratios to maximize tax-deferred growth
3. Broad market coverage — Broad market coverage for core portfolio holdings
4. Bond options for — Bond options for age-appropriate asset allocation

We also factored in our proprietary Beginner Suitability Score, which evaluates each fund on a 1-to-10 scale considering expense ratios, volatility (beta), diversification (holdings count), dividend history, and track record length. Funds that score consistently high across these dimensions earned a spot on our list.

1. Vanguard S&P 500 ETF (VOO) — Best Overall

Vanguard • U.S. Large-Cap Blend

VOO tracks the S&P 500 index, giving you ownership in 500 of the largest U.S. companies in a single investment. It is one of the most popular ETFs in the world thanks to its ultra-low expense ratio and broad market exposure. For beginners, VOO is often recommended as a core portfolio holding because it provides instant diversification across America's leading businesses.

Vanguard S&P 500 ETF earns its spot as our best overall pick because it delivers on the metrics that matter most for 401k investing investors. With an expense ratio of just 0.03%, you keep more of your returns working for you over time. The fund manages $560.0B in total assets, which speaks to its popularity and ensures strong liquidity with tight bid-ask spreads when you buy or sell shares.

Over the past five years, VOO has delivered a total return of 15.80%, outperforming many of its peers and rewarding patient, long-term investors. The fund holds 503 individual securities, giving you exceptional diversification across a wide swath of the market. Its beta of 1.00 indicates that the fund is closely aligned with overall market movements, which is expected for a broadly diversified fund.

VOO currently pays a dividend yield of 1.30%, providing investors with a stream of regular income on top of capital appreciation. Dividends are typically distributed quarterly and can be automatically reinvested through most major brokerages, accelerating the compounding process. With a track record stretching back to 2010, VOO has weathered multiple market cycles including the 2008 financial crisis and the 2020 pandemic, proving its resilience. Our Beginner Suitability Score rates it 9.5/10 (Great for Beginners), reflecting its excellent combination of low costs, manageable volatility, and broad diversification.

2. Vanguard Total Stock Market ETF (VTI) — Runner-Up

Vanguard • U.S. Total Market

VTI gives you exposure to the entire U.S. stock market in one fund, covering large-cap, mid-cap, and small-cap companies. With over 3,600 holdings, it is one of the most diversified U.S. equity ETFs you can buy. Beginners often choose VTI over S&P 500 funds because it includes smaller companies that have historically provided additional growth potential.

Vanguard Total Stock Market ETF earns its spot as our runner-up pick because it delivers on the metrics that matter most for 401k investing investors. With an expense ratio of just 0.03%, you keep more of your returns working for you over time. The fund manages $430.0B in total assets, which speaks to its popularity and ensures strong liquidity with tight bid-ask spreads when you buy or sell shares.

Over the past five years, VTI has delivered a total return of 15.20%, outperforming many of its peers and rewarding patient, long-term investors. The fund holds 3,644 individual securities, giving you exceptional diversification across a wide swath of the market. Its beta of 1.00 indicates that the fund is closely aligned with overall market movements, which is expected for a broadly diversified fund.

VTI currently pays a dividend yield of 1.30%, providing investors with a stream of regular income on top of capital appreciation. Dividends are typically distributed quarterly and can be automatically reinvested through most major brokerages, accelerating the compounding process. With a track record stretching back to 2001, VTI has weathered multiple market cycles including the 2008 financial crisis and the 2020 pandemic, proving its resilience. Our Beginner Suitability Score rates it 9.5/10 (Great for Beginners), reflecting its excellent combination of low costs, manageable volatility, and broad diversification.

3. Vanguard Total Bond Market ETF (BND) — Best for Income

Vanguard • U.S. Intermediate-Term Bond

BND provides exposure to the entire U.S. investment-grade bond market, including government, corporate, and mortgage-backed bonds. Bonds generally provide stability and income to a portfolio, acting as a cushion when stocks decline. Beginners often add BND to their portfolio to reduce overall volatility and provide steady income, with the typical rule of thumb being to hold your age in bonds as a percentage of your portfolio.

Vanguard Total Bond Market ETF earns its spot as our best for income pick because it delivers on the metrics that matter most for 401k investing investors. With an expense ratio of just 0.03%, you keep more of your returns working for you over time. The fund manages $116.0B in total assets, which speaks to its popularity and ensures strong liquidity with tight bid-ask spreads when you buy or sell shares.

Over the past five years, BND has delivered a total return of -0.50%, reflecting challenging market conditions, though the fund remains well-positioned for recovery. The fund holds 11,286 individual securities, giving you exceptional diversification across a wide swath of the market. Its beta of 0.03 indicates that the fund is significantly less volatile than the broader market, making it a more stable choice for conservative investors.

BND currently pays a dividend yield of 4.30%, providing investors with a stream of regular income on top of capital appreciation. Dividends are typically distributed quarterly and can be automatically reinvested through most major brokerages, accelerating the compounding process. With a track record stretching back to 2007, BND has weathered multiple market cycles including the 2008 financial crisis and the 2020 pandemic, proving its resilience. Our Beginner Suitability Score rates it 10/10 (Great for Beginners), reflecting its excellent combination of low costs, manageable volatility, and broad diversification.

4. Vanguard Total International Stock ETF (VXUS) — Best for International Exposure

Vanguard • International Equity

VXUS provides exposure to stocks from developed and emerging markets outside the United States, covering over 8,000 companies across Europe, Asia, and the rest of the world. It is the most popular way to add international diversification to a U.S.-focused portfolio. Beginners building a globally diversified portfolio often pair VXUS with VTI to own virtually every publicly traded stock in the world.

Vanguard Total International Stock ETF earns its spot as our best for international exposure pick because it delivers on the metrics that matter most for 401k investing investors. With an expense ratio of just 0.07%, you keep more of your returns working for you over time. The fund manages $74.0B in total assets, which speaks to its popularity and ensures strong liquidity with tight bid-ask spreads when you buy or sell shares.

Over the past five years, VXUS has delivered a total return of 5.50%, providing steady growth for investors who stayed the course through market volatility. The fund holds 8,537 individual securities, giving you exceptional diversification across a wide swath of the market. Its beta of 0.85 indicates that the fund is closely aligned with overall market movements, which is expected for a broadly diversified fund.

VXUS currently pays a dividend yield of 3.10%, providing investors with a stream of regular income on top of capital appreciation. Dividends are typically distributed quarterly and can be automatically reinvested through most major brokerages, accelerating the compounding process. With a track record stretching back to 2011, VXUS has weathered multiple market cycles including the 2008 financial crisis and the 2020 pandemic, proving its resilience. Our Beginner Suitability Score rates it 9.5/10 (Great for Beginners), reflecting its excellent combination of low costs, manageable volatility, and broad diversification.

5. iShares Core U.S. Aggregate Bond ETF (AGG) — Best Value Pick

BlackRock • U.S. Intermediate-Term Bond

AGG is BlackRock's version of a total U.S. bond market ETF, tracking the Bloomberg U.S. Aggregate Bond Index. It covers a similar universe of bonds as Vanguard's BND, including treasuries, corporates, and mortgage-backed securities. Beginners will find that AGG and BND are nearly interchangeable, with the main differences being minor variations in expense ratio and the index methodology used.

iShares Core U.S. Aggregate Bond ETF earns its spot as our best value pick pick because it delivers on the metrics that matter most for 401k investing investors. With an expense ratio of just 0.03%, you keep more of your returns working for you over time. The fund manages $118.0B in total assets, which speaks to its popularity and ensures strong liquidity with tight bid-ask spreads when you buy or sell shares.

Over the past five years, AGG has delivered a total return of -0.60%, reflecting challenging market conditions, though the fund remains well-positioned for recovery. The fund holds 12,095 individual securities, giving you exceptional diversification across a wide swath of the market. Its beta of 0.03 indicates that the fund is significantly less volatile than the broader market, making it a more stable choice for conservative investors.

AGG currently pays a dividend yield of 4.20%, providing investors with a stream of regular income on top of capital appreciation. Dividends are typically distributed quarterly and can be automatically reinvested through most major brokerages, accelerating the compounding process. With a track record stretching back to 2003, AGG has weathered multiple market cycles including the 2008 financial crisis and the 2020 pandemic, proving its resilience. Our Beginner Suitability Score rates it 10/10 (Great for Beginners), reflecting its excellent combination of low costs, manageable volatility, and broad diversification.

Comparison Table

Here is a side-by-side comparison of all 5 ETFs in our 401k investing category. This table highlights the key metrics you should evaluate when choosing between these funds. Pay close attention to expense ratios and beginner scores, as these are the most impactful factors for long-term investment success.

*Beginner Score is calculated based on expense ratio, beta, holdings count, dividend yield, and fund inception year. Past performance does not guarantee future results.

Common Mistakes 401k Investing Investors Make

Even with a solid selection of ETFs, investors in the 401k investing category can undermine their results by falling into avoidable traps. Understanding these common pitfalls will help you stay on track and avoid costly errors that could set back your financial progress by years or even decades.

• 1

  Not contributing enough to: Not contributing enough to capture the full employer match

• 2

  Leaving 401k funds in: Leaving 401k funds in a default money market or stable value option

• 3

  Taking early withdrawals and: Taking early withdrawals and paying penalties plus taxes

• 4

  Ignoring fund expense ratios: Ignoring fund expense ratios when cheaper alternatives exist in the plan

The best defense against these mistakes is a simple, written investment plan that you commit to following regardless of market conditions. Define your target allocation, set up automatic contributions, and schedule a review only once or twice per year. This removes emotion from the process and keeps you focused on long-term wealth building rather than short-term noise.

Frequently Asked Questions