Avoid Overpaying! 5 Lowest-Cost S&P 500 ETFs for Smart Investors

When investors look for the best S&P 500 ETF to buy, they’re often searching for a fund that combines low fees, strong long-term performance, and reliable exposure to the U.S. stock market. While many ETFs track the S&P 500, not all are created equal.

Some offer ultra-low expense ratios, others have higher trading volumes or better tax efficiency. Choosing the best S&P 500 ETF depends on your investment goals, whether you're focused on minimizing costs, maximizing returns, or holding for the long term.

Why Invest in an S&P 500 ETF?

Before jumping into the list, here’s why S&P 500 ETFs remain a popular choice:

Diversification: You own a tiny piece of 500 large US companies across all major sectors , Passive Investing: ETFs track the S&P 500 index, requiring no active management.

Cost Efficiency: Many S&P 500 ETFs come with ultra-low fees compared to mutual funds , Liquidity: Highly traded ETFs make buying and selling easy at fair prices.

1. SPDR S&P 500 ETF Trust (SPY)

Expense Ratio: 0.09% , overview: The oldest and most liquid S&P 500 ETF. SPY is a favorite among traders because of its massive daily volume.

Why Buy: If you want easy trading access, tight bid-ask spreads, and a trusted name, SPY is a solid pick ,  Best for  Traders and investors prioritizing liquidity and market accessibility.

2. iShares Core S&P 500 ETF (IVV)

Expense Ratio: 0.03% ,  overview: IVV offers the lowest expense ratio among the big three S&P 500 ETFs, making it very cost-efficient.

Why Buy: If you want to hold for the long term and reduce fees eating into your returns, IVV is excellent and best for: Long-term buy-and-hold investors who prioritize low fees.

3. Vanguard S&P 500 ETF (VOO)

Expense Ratio: 0.03% , overview: VOO is Vanguard’s flagship S&P 500 ETF, known for its investor-friendly approach and low cost.

Why Buy: Similar to IVV, it has an ultra-low fee, with a strong reputation for tracking the index closely , best for: Cost-conscious investors looking for a trusted, widely accessible ETF.

4. Schwab U.S. Large-Cap ETF (SCHX)

Expense Ratio: 0.03% , overview: While not strictly an S&P 500 ETF, SCHX tracks the Dow Jones U.S. Large-Cap Total Stock Market Index, very similar to S&P 500.

Why Buy: For investors looking for an alternative with equally low fees and broad exposure ,  best for: Investors interested in broad large-cap exposure at minimal cost.

5. Invesco S&P 500 Equal Weight ETF (RSP)

Expense Ratio: 0.20% , overview: RSP weights all S&P 500 companies equally rather than by market cap, offering a unique risk/reward profile.

Why Buy: For those wanting diversification beyond market cap weighting, potentially capturing more upside from mid-sized companies , best for: Investors seeking a different approach within the S&P 500 space.

What’s the Cheapest S&P 500 ETF to Buy?

Both IVV and VOO come with an industry-leading expense ratio of just 0.03% — meaning you pay only $3 annually for every $10,000 invested. This ultra-low fee is hard to beat and has a huge impact on long-term returns.

If you want to minimize costs, these two ETFs top the list.

Which S&P 500 ETF is the Best for You?

Choosing the best S&P 500 ETF depends on your needs:

Tips Before Buying an S&P 500 ETF

• Check your brokerage: Not all brokers offer every ETF, and some may charge commissions.
• Consider your currency: If you trade outside the US, think about currency risk and trading hours.
• Review your investment goals: ETFs suit different strategies, from retirement to short-term speculation.
• Understand tax implications: Some ETFs have tax advantages depending on your country.

Final Takeaway: Start Smart, Invest Low-Cost

The best S&P 500 ETF to buy in 2025 often boils down to two key factors: cost and liquidity. The lowest expense ratio S&P 500 ETFs like IVV and VOO give you the most bang for your buck long term, while SPY’s unmatched liquidity suits active traders.

If you want to reduce fees, improve diversification, and own a piece of America’s largest companies, pick an S&P 500 ETF that fits your trading style and budget. Start investing today and let your money work hard for you with one of these top ETFs.

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