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Polygon, Start Here

Updated 2026-10-29

Short answer: Polygon (Polygon PoS) is a low-fee blockchain that works like Ethereum: the same 0x addresses, the same wallets and the same kinds of tokens. Fees are paid in POL, the coin that replaced MATIC in 2024.

Fees

  • Every transaction costs a small amount of POL, even when you send a token.
  • Keep a little POL in your wallet, or you can't move your tokens.
  • If you still have MATIC on Polygon, it became POL automatically. MATIC held on Ethereum can be upgraded through Polygon's official site.

Moving coins

  • When you withdraw from an exchange, choose the Polygon network.
  • The same 0x address works on Ethereum, but coins on one network don't appear on the other.
  • Moving tokens between Ethereum and Polygon needs a bridge: see how crypto bridges work.

Watch out

  • Two kinds of USDC: native USDC and an older bridged "USDC.e" both exist on Polygon. Apps and exchanges may accept only one.
  • Approvals: revoke ones you no longer use: how to check and revoke token approvals.
  • Fake tokens and airdrops are common; check contracts on the project's site.

On Crypto Lighthouse

  • [Portfolio](/portfolio): POL and the major tokens on Polygon, recent activity, and liquid staking yields.
  • [Approvals](/rewards): check and revoke approvals on Polygon.
  • Token checks and [Check an Address](/check).

Learn more at polygon.technology.