How are platforms like phantom wallet able to withdraw 100% of the sol balance

External question — Solana Stack Exchange Author: A1exey Original post: https://solana.stackexchange.com/questions/23014 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I understand the following: There is a 'minimum rent' amount for every solana wallet, however different platforms are somehow able to let me transfer 100% of the sol amount to another wallet. I'm doing this in node js, and my attempts have been: Set higher compute lamports Decrease the lamport amount from transaction fees (-5000 lamports) The only method that works is subtracting around -900,000 lamports which seems to be the rent amount as a minimum If someone is able to show me a relevant piece of documentation / an extract of node js code showing how its meant to be done correctly to achieve: Being able to transfer the entire SOL balance of a wallet to another wallet. Error for reference: Transaction simulation failed: Transaction results in an account (0) with insufficient funds for rent

External answer — Solana Stack Exchange Author: Jon C Original post: https://solana.stackexchange.com/a/23135 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. You can certainly transfer everything out of a wallet, but as you've noticed, you need to get the right value, because the wallet will be charged for transaction fees and priority fees. This can be a tricky problem, so your best bet might be to use getFeesForMessage with your transaction, and then subtract that amount from the total balance in the wallet.