Its job is to answer one question at any moment: how much money should the business have right now? Because entries go in as they happen, the running balance in a cash book is what you check the drawer against at the end of the day. If the two disagree, something was missed — and the cash book is where you look.
A cash book is the oldest and most universal business record there is. A shop with one counter needs one for exactly the same reason a company with forty staff does: money moves, and memory does not keep up with it.
What goes into each entry
Every transaction in a cash book carries the same handful of facts. Leave one out and the entry stops being useful later, which is almost always when you need it.
- The date the money actually moved.
- The amount.
- The direction — received or paid out. These are often called cash in and cash out, or money in and money out.
- The party it relates to: which customer paid, or which supplier was paid.
- A short description, so the entry still makes sense to someone reading it in six months.
- How it was paid — cash, bank transfer, UPI, cheque or card. Keeping this on the entry is what lets you reconcile against a bank statement later.
The types of cash book
Cash books are described by how many columns they carry. The distinction is older than software and still shapes how people talk about the record.
- A single-column cash book records cash only. One column for receipts, one for payments.
- A double-column cash book adds a second column, usually bank, so cash and bank are tracked side by side. Some businesses use the second column for discount instead.
- A triple-column cash book carries cash, bank and discount together.
- A petty cash book is a small separate book for minor daily expenses — tea, transport, stationery — so they do not bury the main record.
In a digital cash book the column distinction largely disappears: each entry simply carries its own payment mode, and the equivalent of a double or triple-column book is a view you choose rather than a format you commit to when you buy the notebook.
Cash book vs ledger vs passbook
These three get used interchangeably and they are not the same record. The difference is not what they contain so much as how it is organised.
| Record | What it records | How it is organised |
|---|---|---|
| Cash book | Money received and money paid out, cash and bank. | Date order, as transactions happen. |
| Ledger | The same transactions, seen per account. | Grouped by customer, supplier or expense head. |
| Passbook | Only what moved through one bank account. | Date order, issued by the bank. |
| Petty cash book | Small day-to-day expenses only. | Date order, kept separately from the main book. |
The practical point: a cash book tells you how much money you have. A ledger tells you who owes you and whom you owe. You need both answers, and they come from the same transactions — which is why recording a party on each entry matters so much. Get that right and the ledger builds itself.
How to maintain a cash book accurately
Most cash book problems are not arithmetic. They are habits. Five that account for nearly all of it:
- Record on the day. An entry written from memory three days later is a guess wearing the clothes of a record.
- Close the day deliberately. Count the cash and compare it to the closing balance. A gap found today is traceable.
- Never leave a transfer half-recorded. Cash moved into the bank has to leave cash and arrive in bank. One-sided transfers are the most common cause of a book that will not balance.
- Keep personal money out. An owner taking cash for household spending is a withdrawal, recorded as such — not an absence.
- Keep the proof with the entry. A bill or receipt attached to the transaction is what makes it defensible later.
What records your business is required to keep, and for how long, depends on how it is registered and where. Treat this page as bookkeeping guidance, not tax or legal advice, and check your specific obligations with a qualified accountant.
Paper, spreadsheet or app
A paper cash book is immediate and needs nothing, which is exactly why it survives. What it cannot do is be in two places at once: the book is wherever it physically is, only one person can write in it, a lost register is unrecoverable, and party balances have to be added up by hand every time you want one.
A spreadsheet fixes the arithmetic and little else. It still has one authoritative copy, no record of who changed a figure, and nothing stopping a number being overwritten.
A digital cash book keeps the same entries but makes them shared and reviewable: balances update as entries go in, more than one person can record without fighting over the register, and every entry keeps a trail of who entered it and when. That last part is usually the real reason a growing business switches — not the arithmetic, but knowing who recorded what.
Frequently asked questions
- What is a cash book in simple words?
- A cash book is the record where a business writes down the money it receives and the money it pays out, in date order, so it always knows how much cash it should have on hand.
- What is the difference between a cash book and a ledger?
- A cash book records cash and bank transactions in date order as they happen. A ledger groups transactions by account — one page per customer, supplier or expense head — so you can see a running total for each. Most businesses keep both, and the ledger is built from the same transactions the cash book records.
- Is a cash book the same as a passbook?
- No. A passbook is issued by your bank and shows only what passed through that bank account, from the bank’s side. A cash book is kept by the business and covers cash in hand as well as bank movement, including transactions the bank never sees.
- What are the types of cash book?
- A single-column cash book records cash only. A double-column cash book adds a second column, usually bank or discount. A triple-column cash book records cash, bank and discount together. A petty cash book is a separate small book for day-to-day minor expenses.
- How do you maintain a cash book correctly?
- Record every transaction on the day it happens, give each one a date, an amount, a direction (received or paid) and a short description, note which party it relates to, and check the closing balance against the cash actually in the drawer at the end of the day. A difference found the same day is easy to trace; one found a month later usually is not.
- Can a cash book show a negative balance?
- A cash book should never show a negative cash balance, because you cannot pay out cash you do not physically have. A negative figure means something is wrong in the records — a missing receipt, a payment entered twice, or a transfer recorded on only one side.
Keeping a cash book in CashBook
CashBook is a digital cash book built around the practices above. Entries carry a date, amount, direction, party, category and payment mode; party balances come out of those same entries rather than a second record you maintain by hand; and entries recorded by staff can require review before they affect your balances, so an unchecked number never quietly becomes the number you are reading.