Suppliers' personal accounts are found in the purchases ledger. The purchases ledger is a subsidiary ledger that is used to record all transactions related to the purchase of goods and services on credit from suppliers.
Each supplier has their own personal account in the purchases ledger, which shows the details of all transactions with that supplier, such as purchases made, payments received, and any amounts owing.
The purchases ledger is an important tool for managing a business's accounts payable, as it allows the business to keep track of all amounts owed to suppliers and to ensure that payments are made on time. It is also used to generate reports such as an aged creditors report, which shows how much money is owed to each supplier and how long the amounts have been outstanding.