What is Double-Entry Bookkeeping? A Guide for Singapore SME Owners

If you have ever looked at accounting software and felt confused by terms like "debit," "credit," and "journal entry," you are not alone. Double-entry bookkeeping sounds complicated, but the core idea is simple — and understanding it will help you make better financial decisions for your business.

The one-sentence explanation

Every financial transaction affects two accounts. Money does not appear or disappear — it moves from one place to another.

A simple example

You send a $1,000 invoice to a customer. Two things happen:

1. Accounts Receivable increases by $1,000 — you are owed money
2. Revenue increases by $1,000 — you earned income

When the customer pays:

1. Cash increases by $1,000 — money arrives in your bank
2. Accounts Receivable decreases by $1,000 — the debt is cleared

Every transaction has two sides. That is double-entry bookkeeping.

Why does this matter?

It catches errors

If your books do not balance — if debits do not equal credits — something is wrong. Double-entry is self-checking in a way that single-entry (a simple income/expense list) is not.

It produces accurate reports

A proper Profit & Loss statement and Balance Sheet are only possible with double-entry. These are the reports your accountant, bank, or investor will ask for.

It is required for ACRA compliance

Under the Singapore Companies Act, companies must maintain proper accounting records. Double-entry bookkeeping is the standard that satisfies this requirement.

The five account types

All accounts in double-entry fall into five categories:

Type	What it tracks	Examples
Asset	What you own	Cash, bank, accounts receivable, equipment
Liability	What you owe	Accounts payable, loans, GST payable
Equity	Owner's stake	Paid-up capital, retained earnings
Revenue	Income earned	Sales, service fees
Expense	Costs incurred	Rent, salaries, software subscriptions

Debits and credits — demystified

This is where most people get confused. "Debit" does not mean money going out, and "credit" does not mean money coming in. They are just the two sides of every entry.

Here is the rule:

Account type	Debit increases	Credit increases
Asset	✓
Liability		✓
Equity		✓
Revenue		✓
Expense	✓

So when you receive cash (an asset), you debit cash. When you earn revenue, you credit revenue. The two sides balance.

Do you need to understand this to use Claify?

No. Claify posts journal entries automatically when you:

• Create and mark an invoice as paid
• Record an expense
• Issue a quotation that converts to an invoice

You never see the debit/credit entries unless you want to. But if you do want to see them, go to Reports → Journal — every transaction is there with a full double-entry breakdown.

Understanding the basics helps you read your Profit & Loss and Balance Sheet with confidence, and have more informed conversations with your accountant.

Getting started

If your business is currently running on spreadsheets or a bank statement, moving to proper double-entry accounting is easier than you think.

1. Create a free Claify account
2. Your chart of accounts is pre-seeded with IRAS-aligned Singapore accounts
3. Import your bank transactions via CSV (DBS, OCBC, UOB supported)
4. Claify auto-categorises transactions and posts journal entries

Your Profit & Loss and Balance Sheet are available immediately — no setup required.