Basics · Beginner lesson · about 6 minutes
Gas fees
The cost of asking a network to process work.
The short answer
A gas fee pays miners or validators for including a transaction or executing smart-contract work. Fees vary with demand, network design, and transaction complexity.
In plain English
A gas fee pays miners or validators for including a transaction or executing smart-contract work. Fees vary with demand, network design, and transaction complexity.
This lesson belongs to the basics cluster. The details differ by network and service, so use the linked sources and the project’s own documentation when a decision depends on current behavior.
What can go wrong
Read this before you act.
A failed transaction can still cost money, and the asset being moved may not be the asset used to pay the fee.
Check your understanding
A few questions. Not a test.
Choose an answer to see why it is right or wrong. Nothing is locked behind a score.
Sources and corrections
This lesson is a starting point. When details matter, read the official pages we link below, and tell us if something needs a correction.