Rent exemption (Solana)
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The RPC method
getMinimumBalanceForRentExemption: Takes an account's data length in bytes and returns the minimum balance, in lamports, that keeps an account of that size rent-exempt. getMinimumBalanceForRentExemption reference →
Applies to: Solana
Endpoint and plans: Solana RPC endpoint.
In more detail
Solana's account documentation gives the minimum as (account_size + 128) × 3,480 lamports per byte-year × 2 years. The balance is refundable when the account is closed. getMinimumBalanceForRentExemption returns the amount for a given data size.