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POS system vs cash book: what is the difference?
Published 2026-11-01
A cash book records money in and out. A POS system records the sale and its items, payment, customer and stock effects. Many businesses need both kinds of information, connected by a sound bookkeeping process.
What a cash book is good at
A cash book is a simple record of receipts and payments, often grouped by date and category. It can help a small business see cash movement when entries are made completely and supported by receipts.
On its own, it may not show which products sold, what stock remains, which customer owes money or whether a till shift balanced.
What a POS adds
A POS system records item-level sales and payment methods at checkout. Depending on the product, it can also update stock, issue receipts, record returns, follow customer credit and report sales by cashier or branch.
A POS is not automatically a complete accounting system. Confirm whether it records expenses, reconciles payment statements and produces the reports your accountant needs.
Use records that can be reconciled
Choose a process where each sale and expense is entered once, payments can be checked against bank or mobile-money statements, and totals can be traced back to source transactions.
Keep invoices, receipts and statements. Review cash, electronic payments and credit separately so a difference can be investigated rather than concealed by a single total.
Checklist
- List the questions your current cash book cannot answer
- Check whether item-level sales and stock matter
- Confirm expense and accounting capabilities
- Test statement reconciliation and exports
- Agree with your accountant how records will be reviewed
For more detail, see POS for Kenyan shops · Accounting and reports · BlueDuka features.