Are you attempting to transfer tokens but encountering an error stating "Not enough ETH to send"? This indicates your wallet lacks sufficient Ether (ETH) to cover the gas fee required for the transaction.
Understanding Ethereum Transaction Fees
The Role of Gas Fees
Ethereum’s network requires gas fees—paid exclusively in ETH—to process transactions. Without fees, the network would face spam and congestion. Gas motivates miners to include your transaction in the blockchain.
Activities requiring gas:
- Sending ETH or ERC-20 tokens.
- Deploying/interacting with smart contracts.
- Fee structure: Measured in gas units, a fraction of ETH.
Do You Need ETH to Receive Tokens?
No. Receiving ETH or ERC-20 tokens requires zero ETH. However, sending tokens demands ETH for gas. Only the sender pays fees.
👉 Example: If someone sends tokens to your address, they cover the gas. But transferring tokens out of your wallet requires ETH.
Why ETH Is Mandatory for ERC-20 Transfers
ERC-20 Tokens and Ethereum’s Blockchain
ERC-20 tokens (e.g., USDT, LINK, DAI) operate on Ethereum’s blockchain—they lack independent blockchains. Since transactions occur on Ethereum’s network, fees are only payable in ETH, not the tokens themselves.
How Gas Works
Every Ethereum operation consumes gas, paid in ETH. Key concepts:
- Gas Price (GWEI): Cost per gas unit.
- Gas Limit: Maximum gas allocated per transaction.
Tip: Use ETH Gas Station to track real-time gas fees.
Key Takeaways
- Hold ETH for outbound transfers—even for tokens.
- No ETH needed to receive tokens.
- Gas fees fluctuate—check networks before transacting.
FAQ
1. Can I pay gas fees in ERC-20 tokens?
No. Ethereum’s network only accepts ETH for gas.
2. How much ETH should I keep for gas?
A small amount (e.g., 0.005–0.01 ETH) typically covers standard transfers.
3. Why does MetaMask show "Not enough ETH"?
Your ETH balance is insufficient to cover the gas fee for the pending transaction.
4. Are gas fees avoidable?
No. All Ethereum transactions require gas.
5. What happens if I send tokens without ETH?
The transaction fails, but you lose the spent gas fee.
For deeper insights into Ethereum’s ecosystem, explore our 👉 advanced guides.
Disclaimer: Always verify wallet balances and network fees before transacting.
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