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I am developing an app using Web3.js where users send an amount of tokens to a new wallet. What I want is forward the tokens to another wallet but I am unable because the wallets where tokens are received don't have ETH to pay gas fee. Are there any way to forward the tokens without ETH, I was thinking to use an account just for paying fees. For example Wallet A send 30 tokens to Wallet B, this wallet sign the transaction and Wallet C which have ETH will send the signed transaction so another Wallet D could receive the tokens. Is it possible?

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  • Since each Ethereum transaction requires computational resources to execute, each transaction requires a fee. Gas refers to the fee required to conduct a transaction on Ethereum successfully. See these links to know more about fees: 1, 2.

  • Gas fees are paid in Ethereum's native currency, ether (ETH).

  • If you are looking for a centralized architecture, you can start with these links: 1, 2, 3. If you are not going to use smart contracts' approach and want to go with the EOA one, just simply send the (estimated gas * gas price) to the sender's account, before proceeding the token transfer. These links might be useful on the gas subject: 1, 2.

Hope this helps.

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  • Thank you for your answer. I think the best option would be create a "parent" wallet to generate multiple public deposit wallets as you mentioned before. Do you have more information about it?
    – sendfy
    Commented Jan 24, 2022 at 20:50
  • @sendfy, github repo: github.com/cipherzzz/erc20-megawallet
    – Rouhollah Joveini
    Commented Jan 25, 2022 at 4:55
  • Are you aware of this fact that within this approach, you have to create a contract address for each user (here named ERC20Wallet)? It costs you at least $100 per user to deploy their smart contracts on the Ethereum network, depending on the gas price. However as I mentioned in my stack Q, there are a few workarounds to minimize the fee, but not zero.
    – Rouhollah Joveini
    Commented Jan 25, 2022 at 5:00
  • But, the pros are: 1. auto-forwarding deposit Ether to the master account with zero fee (in the EOA model you have to pay 1 fee). 2. paying 1 transaction fee to (NOT_AUTO-)forward erc20s to the master account (in the EOA model you have to pay 2 fees).
    – Rouhollah Joveini
    Commented Jan 25, 2022 at 5:04
  • In case you are not familiar with contract addresses: info.etherscan.com/what-is-an-ethereum-address/….
    – Rouhollah Joveini
    Commented Jan 25, 2022 at 5:07

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