Single-entry bookkeeping is a simplified accounting method that focuses on primarily recording transactions in a single ledger, often in the form of a cash book. It’s best suited for small businesses, freelancers, and solopreneurs who have a limited volume of transactions. Given its simplicity, it’s popular among individuals who don’t require a detailed account of assets, liabilities, or other complex financial metrics. However, while it offers ease and quickness, it lacks the comprehensive financial insight provided by the double-entry system, making it less ideal for larger or rapidly-growing businesses.