When you say available balance, this is the type of balance that you will have after all of the things that went into your account or were subtracted from your account have already come in. This means that the debit today and the credits today have already been removed.
When you say ledger balance, this stands for the credits that you may have today even before the other things will be removed. This means that it is your account balance at the beginning of the day.
This explains why your ledger balance and your available balance are different from each other. You would need to check them both just to be sure that you have enough money to spend.
The significant difference between ledger balance and available balance is the total amount of money in the bank balance according to the books of accounts, particularly in the morning. On the other hand, the available balance is the amount of money that a business has, which can be retrieved for direct use.
Ledger balance or account balance is the total amount of funds (cash and bank balances). They are recorded in the accounts at any point in time. However, due to some posting and distinguishing time laps, this ledger balance might not be the balance that is readily available for use. The available balance is the amount that an organization has for immediate use in the morning.