Transaction value consistently exceeds the calculated total from getFeeData

[alicercedigital]

Ethers Version

6.11.1

Search Terms

fee, transaction, insufficient funds

Describe the Problem

Cannot send the full amount of an wallet because the transaction value consistently exceeds the calculated total. Attempting to send all funds using:

  const balance = await provider.getBalance(fromAddress);
  const gasPrice = (await provider.getFeeData()).gasPrice;
  const gasLimit = BigInt(22000);
  const txFee = gasPrice * gasLimit;

  const result = await signer.sendTransaction({
    from: fromAddress,
    to: toAddress,
    value: balance - txFee,
    gasPrice,
    gasLimit,
   });

I don't know if this is related but I'm getting this when I use getFeeData():
MetaMask - RPC Error: The method "eth_maxPriorityFeePerGas" does not exist / is not available.

Network: Base Sepolia
Provider: MetaMask

Code Snippet

No response

Contract ABI

No response

Errors

insufficient funds for intrinsic transaction cost 

(transaction="0x02f87283014a3402830f433c830f433c8255f094be217b9f70f3d461bfeac4fff298c2ebe00a76558731dca4ed1dfd1b80c001a0df121d2d3fc3a0fbf5938d526f1dd5b666d4ec359bfefa8ca95b305b57b531fba00c65c3c9a667df9f7a8f41c6485769f4eab6d85360d13a6880879522cfd078f3", 
info={
 "error": { 
"code": -32000, 
"message": "insufficient funds for gas * price + value: 
balance 14034896775278939,
tx cost 14053846141711170, 
overshot 18949366432231" } }, 
code=INSUFFICIENT_FUNDS, version=6.11.1)

Environment

Browser (Chrome, Safari, etc), Other (please specify)

Environment (Other)

Base Sepolia

[ricmoo]

My guess is this is an issue due to L1 vs L2 fees. Additional fees are required on the L1 to broadcast the transaction, which are not aomodated in the L2 fees (which is what getFeeData() is able to identify).

I think. :)

[ricmoo]

I'm moving to discussions though, and would love additional feedback on this. :)

[zhanghuize-git]

Is it possible to provide an estimateL1GasCost API for L2's network to calculate fees?