Wall Street's intensifying ETF fee war may be delivering an unexpected benefit to millions of retirement savers: potentially larger 401(k) balances over time.
• Vanguard S&P 500 ETF stock is trading at elevated levels. What should traders watch with VOO?
Fund fees continued to be cut as asset managers battle for investor flows in the rapidly expanding ETF industry. For example, a fee battle cost State Street SPDR S&P 500 ETF Trust (NYSE:SPY) billions of inflows last year as Vanguard S&P 500 ETF (NYSE:VOO) gained popularity for lower fees. SPY saw outflows of more than $10 billion while VOO gained inflows of a staggering $138 billion, per ETFDb.
That trend matters because even tiny differences in expense ratios can significantly affect long-term retirement returns through compounding.
For example, consider a worker with a $500,000 retirement portfolio earning an average annual return of 7% over 25 years. If the portfolio carries a 0.50% annual fee, the net annual return falls to 6.5%, growing the portfolio to roughly $2.41 million over time.
But if the investor pays just 0.03% in annual fees, the portfolio compounds closer to 6.97% annually and grows to about $2.69 million. The difference, nearly $280,000, comes largely from fees and lost compounding, illustrating how even a few basis points can have a meaningful long-term impact.
The fee pressure has been particularly intense among passive index ETFs tracking the S&P 500 and the broader U.S. stock market. Popular low-cost funds apart from VOO, such as the iShares Core S&P 500 ETF (NYSE:IVV), now charge expense ratios measured in just a few basis points, such as 0.03%.
Meanwhile, broad-market products such as the iShares Core S&P Total U.S. Stock Market ETF (NYSE:ITOT) and Schwab U.S. Broad Market ETF (NYSE:SCHB) continue competing aggressively on cost as providers seek to attract long-term retirement assets.
Low-Cost Investing Gains Ground In Retirement Accounts
The growing popularity of low-fee products is increasingly influencing retirement-plan construction as employers and plan sponsors face pressure to keep costs down for workers.
Americans held roughly $10 trillion in 401(k) plans as of late 2025, according to Investment Company Institute data, making fees a critical factor for long-term retirement outcomes.
Still, not every ETF is racing toward rock-bottom pricing. Active ETFs, leveraged and other tactical, and income-oriented strategies often carry higher fees due to portfolio management costs and more complex strategies.
Funds such as the JPMorgan Equity Premium Income ETF (NYSE:JEPI) and JPMorgan Nasdaq Equity Premium Income ETF (NASDAQ:JEPQ) can be good options to consider for retirement-focused investors seeking income and downside cushioning, despite charging more than traditional passive index ETFs.
JEPI emphasizes defensive equity income, JEPQ adds higher-yielding but more volatile tech exposure, while Vanguard Intermediate-Term Corp Bond Indx Fund ETF (NASDAQ:VCIT) provides stability through investment-grade corporate bonds.
Investors should also keep taxes in mind, since a large share of the income may be taxed as ordinary income.
Photo: Shutterstock
Photo: Shutterstock
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