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Best Platforms to Buy Mutual Funds, Index Funds & ETFs (Low Fees)
Updated February 2026.
BEST CHOICE OVERALL
M1 Finance
Type: Automated Brokerage Platform
Best For: Investors who want to automate mutual fund, ETF, and index fund portfolios with minimal effort
Key Benefits: Customizable “pie” portfolio structure, automatic rebalancing, recurring investments, commission-free trades, and support for retirement accounts
Expert Insight: Financial advisors often highlight automated portfolio platforms as a way to maintain target allocations and reduce emotional trading decisions, which can improve long-term investing outcomes.
BEST Low-Cost Investing Platform
Webull
Type: Discount Online Brokerage
Best For: Cost-conscious investors seeking commission-free trades on ETFs, index funds, and stocks
Key Benefits: Commission-free trading, advanced research and charting tools, fractional shares, and a clean, intuitive interface for beginners and intermediate investors
Expert Insight: Low-cost platforms help investors maximize long-term returns by minimizing fees, and Webull’s robust research tools support informed decision-making across fund and ETF choices.
BEST for Retirement Accounts
SoFi Invest
Type: Digital Brokerage with Retirement Account Options
Best For: Investors opening Traditional or Roth IRAs with mutual fund or ETF allocations
Key Benefits: Commission-free trades, automated investing, access to diversified portfolios, and educational resources for retirement planning
Expert Insight: Platforms that combine fund access with tax-advantaged account support can help investors stay consistent with retirement contributions while keeping costs low.
BEST for Beginners & Simplicity
Fidelity Go
Type: Digital Advisory Service + Brokerage Access
Best For: New investors seeking simplicity with mutual fund and ETF investing
Key Benefits: Automated portfolio management, broad access to Fidelity mutual funds and ETFs, low-cost management fees, and beginner-friendly guidance
Expert Insight: Simplified platforms can reduce decision fatigue and help beginners stay invested, especially when paired with a trusted brand like Fidelity for research and fund selection.
BEST for Broad Fund Selection
Charles Schwab
Type: Full-Service Brokerage with Proprietary and Third-Party Funds
Best For: Investors who want the largest selection of mutual funds, ETFs, and index funds with flexible account options
Key Benefits: Thousands of mutual funds including Schwab’s proprietary low-cost index funds, commission-free trading, research tools, and retirement account integration
Expert Insight: Having access to both proprietary low-cost index funds and a broad fund marketplace gives investors flexibility and helps diversify portfolios efficiently.
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How We Picked These Platforms
Evaluated access to mutual funds, ETFs, and index funds
Assessed commission structures, trading fees, and expense ratios
Reviewed retirement account availability and features
Checked automation tools and portfolio management options
Verified platform usability, trust signals, and customer satisfaction
Quick Comparison Chart
| Platform | Best For | Fund & ETF Access | Account Minimum / Fees | Standout Feature |
|---|---|---|---|---|
| M1 Finance | Automated investing | Mutual funds, ETFs, index funds | $0 minimum; commission-free | Customizable pie portfolios + automatic rebalancing |
| Webull | Low-cost investing | ETFs, index funds, stocks | $0 minimum; commission-free | Advanced research + fractional shares |
| SoFi Invest | Retirement accounts | ETFs, mutual funds | $0 minimum; commission-free | Automated portfolios + retirement support |
| Fidelity Go | Beginners | Fidelity mutual funds & ETFs | $0 minimum for automated portfolios | Simplified digital advisory service |
| Charles Schwab | Broad fund selection | Proprietary & third-party funds | $0 minimum; commission-free | Extensive fund marketplace + research tools |
Popular Questions About Investing Platforms for Funds
Q: Can I invest in mutual funds, ETFs, and index funds on the same platform?
A: Yes. Most modern brokerages offer access to a wide range of investment products, including ETFs, index funds, and mutual funds.
Q: Which is better: automated portfolios or self-directed fund investing?
A: Automated portfolios reduce emotional trading and rebalance automatically, while self-directed investing provides full control. Choice depends on your experience and time commitment.
Q: Are all trades really commission-free?
A: Many platforms offer commission-free trading on ETFs and stocks, but some mutual funds may carry internal fund expenses or transaction fees. Always check the fund prospectus.
Q: Can I use these platforms for retirement accounts?
A: Most of the platforms listed support Traditional and Roth IRAs, as well as other tax-advantaged accounts, making them suitable for long-term investing goals.
Tips for Using Fund Investing Platforms
Compare fund fees and commissions carefully before investing
Automate contributions to maintain consistency
Track portfolio performance and rebalance when needed
Use research and screening tools to evaluate funds
Understand account types (brokerage vs. retirement) and tax implications
Best menopause comparisons
Best Platform Comparisons
M1 Finance vs. Webull
SoFi Invest vs. Fidelity Go
Charles Schwab vs. Fidelity Investments
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