Subsidiary ledgers are subsets of the general ledger that provide detailed records for specific accounts. There are typically three main control accounts: sales ledger for accounts receivable, purchases ledger for accounts payable, and inventory subsidiary ledger. The subsidiary ledgers track individual customer and supplier balances as well as inventory stock details. The totals from the subsidiary ledgers must equal the balances in the related general ledger control accounts. Subsidiary ledgers help locate errors, check accuracy, and provide ready totals for financial reporting.