How much SOL to send to each wallet before a Pump.fun launch
Every wallet in a launch needs the SOL it is going to spend on its buy, plus a little extra. A wallet that is a few thousandths of a SOL short is the most common reason one buy in a bundle fails — and in a Jito bundle one failed transaction means none of them land.
This calculator works out the exact amount to send to the dev wallet, to each bundle wallet and to each snipe wallet, and the total you need to start with.
Buying a token creates a token account in that wallet, and Solana requires a small rent deposit for it — about 0.002 SOL, which you get back when the account is closed. Each transaction also pays a network fee.
The buffer covers those costs and leaves room to sell later. 0.02–0.05 SOL per wallet is a comfortable range; the default here is 0.05.
The dev (creator) wallet pays for more than its own buy: it creates the coin, so it needs the 0.02 SOL creation reserve, and in this calculator it also pays the Jito tip. That is why its funding amount is higher than a bundle wallet with the same buy.
Whatever is left in the wallets after selling — the buffer, the token-account rent and any SOL from sells — can be collected back into one wallet. Plan the funding knowing you will collect it again.
The amount you want that wallet to buy, plus a buffer of around 0.02–0.05 SOL for the token-account rent and fees. The calculator adds this for you.
Because the buy also needs rent for the new token account and a network fee. A wallet funded with exactly its buy amount is short by those costs.
Yes, and it is the simplest way. Keep in mind that transfers are public on-chain, so anyone can see that the wallets were funded from the same source.
Yes. The buffer you do not use, and the token-account rent once accounts are closed, can be withdrawn back to your main wallet.