What Is a Broker? A Complete Beginner’s Guide

By Sameer Basnet
Published March 15, 2026Updated March 16, 2026
What Is a Broker? A Complete Beginner’s Guide
Stock market charts representing broker activity

A broker is a platform or individual that allows investors to buy and sell assets like stocks, ETFs, and bonds. Without brokers, access to financial markets would be extremely limited.

Financial dashboards and trading analytics
Financial dashboards and trading analytics

Types of Brokers

Full-Service vs Discount Brokers

Full-service brokers provide investment advice and portfolio management, while discount brokers focus on low-cost trade execution with minimal support.

  • Full-service brokers: advisory + portfolio management
  • Discount brokers: low fees, self-directed trading
  • Online brokers: fast and accessible platforms

How Brokers Make Money

Brokers earn revenue through commissions, spreads, and premium services. Some platforms advertise zero commission but monetize in indirect ways.

If you're not paying for the product, you might be the product.

Common Wall Street saying

Always check hidden fees like spreads, withdrawal charges, and inactivity fees before choosing a broker.

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