A manual accounting system is a bookkeeping method in which a practice records, totals and reconciles transactions without dedicated accounting software, using handwritten ledgers, printed journals or simple spreadsheets. In legal practice this commonly describes how a firm records client money and office transactions. It is a descriptive term, not defined in legislation or case law, but widely used in regulatory guidance and audits.Key features typically include paper or spreadsheet ledgers for client and office accounts, a cash book, sequentially numbered bills and receipts, supporting vouchers, and bank reconciliations performed and signed off at regular intervals. It relies on internal controls (authorisation, segregation of duties, cross‑checks) to maintain an audit trail.Across England & Wales (SRA Accounts Rules), Scotland (Law Society of Scotland Accounts Rules), Northern Ireland, and Ireland, regulators do not require computerised systems. Manual systems are permitted if they produce complete, accurate and timely client‑account records, regular reconciliations, and a clear audit trail, with records retained for the required regulatory and tax periods.Practical significance: suitability for low‑volume practices; increased error and fraud risk if controls are weak; inspection readiness; evidential value in disputes and regulatory or VAT audits; and the need for secure storage and, where scanned, reliable copies for disclosure.