# getRequiredPrefund Returns the minimum required funds in wei in the senders's smart account to execute the user operation. ## Import ```ts import { getRequiredPrefund } from "permissionless" ``` ## Usage ```ts import { getRequiredPrefund } from "permissionless" const requiredPrefund = getRequiredPrefund({ userOperation }) // 354000000000000n ``` ## Returns `BigInt` The requied prefund in wei. ## Parameters ### userOperation * **Type:** `UserOperation` The User Operation to get the prefund for.