What Are Gas Fees in Crypto? Network Fees Explained Simply
Every blockchain transfer costs money: that's the network fee. On Ethereum and similar networks, it's called gas. Here's what you're paying for and why the fee is sometimes tiny and sometimes noticeable.
What it is
A network fee is a payment to miners or validators for including your transaction in a block. It goes to those who keep the blockchain running.
Gas is a unit of "work" on Ethereum and similar networks. A simple transfer requires little gas; a complex smart contract operation requires more.
What it depends on
- Network congestion. The more people want in, the more expensive space in a block becomes.
- Operation complexity. A DeFi swap costs more than a simple transfer.
- The network you choose. The same token costs different amounts to send on different networks.
| Where you pay | Who charges it |
|---|---|
| Transfer from your own wallet | The network: you pay gas |
| Withdrawal from an exchange | The exchange charges a fixed fee based on the network |
| Transfer within an exchange | Often free, since the blockchain isn't involved |
How not to overpay
- Choose a cheaper network, but only one the recipient supports.
- Keep a little of the network's "native" coin to pay for gas: without it, you can't send tokens.
Choosing the wrong network is a common reason for losing coins. How to avoid that mistake is covered in the article what is USDT, and all types of trader costs are in the article crypto exchange fees.
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- Network fees go to those who confirm transactions.
- Gas depends on network congestion and how complex the operation is.
- Check the network and the fee before every transfer.
Frequently Asked Questions
Why can't I send my tokens even though I have them?
Most likely, your wallet doesn't have the network's native coin to pay for gas. For example, sending tokens on the Ethereum network requires a little ETH.
Can I get gas back if a transaction fails?
Usually not: gas that's been spent isn't refunded, even if the operation ends in an error.
Why is withdrawing from an exchange more expensive than network gas?
The exchange sets its own fixed withdrawal fee, which may include a buffer for fluctuations in gas costs.
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