Mutual Funds: Types, Fees, and How to Invest

Updated April 2026 · 10 min read

Quick Answer

A mutual fund pools money from many investors to buy a diversified portfolio of stocks, bonds, or other securities. They offer professional management and instant diversification. Low-cost index mutual funds (like FXAIX or VFIAX) are among the best investments for long-term wealth building.

What Are Mutual Funds?

Mutual funds are investment vehicles that collect money from thousands of investors and use it to buy a diversified portfolio of securities. A professional fund manager selects and manages the investments according to the fund's stated objective.

Unlike ETFs, mutual funds are priced once per day at the close of trading (4:00 PM ET). When you buy or sell, you get the end-of-day price called the Net Asset Value (NAV).

Types of Mutual Funds

  • Index Funds: Track a market index. Lowest fees. Best long-term choice. Learn more.
  • Actively Managed: Fund manager picks stocks trying to beat the benchmark. Higher fees.
  • Bond Funds: Invest in government and corporate bonds. Learn about bonds.
  • Target-Date Funds: Automatically adjust allocation as you approach retirement.
  • Money Market Funds: Ultra-safe, low-return funds similar to savings accounts.
  • Sector Funds: Focus on specific sectors (technology, healthcare, energy).

Mutual Fund Fees to Watch

  • Expense Ratio: Annual management fee. Index funds: 0.01-0.20%. Active: 0.50-1.50%.
  • Load Fees: Sales charges. Front-end loads charge when you buy; back-end loads when you sell. Avoid loaded funds.
  • 12b-1 Fees: Marketing and distribution fees included in the expense ratio.

A 1% fee difference costs over $100,000 on a $100,000 portfolio over 30 years. Always minimize fees.

Top Mutual Funds for Beginners

  • FXAIX — Fidelity 500 Index (0.015% expense ratio, no minimum)
  • VFIAX — Vanguard 500 Index Admiral ($3,000 minimum, 0.04%)
  • SWTSX — Schwab Total Stock Market Index (no minimum, 0.03%)
  • FZROX — Fidelity ZERO Total Market Index (0% expense ratio!)

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