Account types refer to their utilization. Zero Hash maintains 5 account types (account_type):
Available
Asset balances that are free for use in trading, settling, paying fees or withdrawing. New deposits will flow into your Available account.
Payable
Refers to a settlement amount you must pay that is outstanding due to having insufficient Available balance, or due to your counterparty having insufficient Available balance. This amount will be realized after all active trades have settled.
Receivable
Refers to a settlement amount you will receive, but that has not been paid due to you having insufficient Available balance to fulfill your side, or due to your counterparty having insufficient Available balance to fulfill theirs. This amount will be paid after all active trades have settled.
Collateral
Refers to assets that are currently being held for open positions. These are actual funds, backed by deposits in one of Zero Hash's partner banks or custodians, that are locked until trades are closed.
Collateral Payable
Refers to the amount that is owed by the participant to cover collateral requirements.