The Accounting Equation Through Five Business Events

Every business event changes a story about resources and claims. The accounting equation keeps those changes connected:

Assets = Liabilities + Equity

For a first reading, think of assets as the business's resources, liabilities as its obligations, and equity as the owners' residual interest after those obligations. These are introductory descriptions, not a substitute for detailed recognition rules.

A studio, five events

Consider a fictional design studio. All amounts below are in IDR million. It begins with no recorded balances. This short example includes only the five events described. Rent relates entirely to the current period; the equipment qualifies as an asset and becomes available for use at the end of this teaching slice, so no depreciation is included. Tax and other expenses are excluded.

The owner contributes 120 in cash

The studio now has cash 120. That cash came from its owner, so equity also increases 120.

Assets 120 = Liabilities 0 + Equity 120.

This is an investment in the business, not income earned from a customer.

The studio pays 6 for this period's rent

Cash falls from 120 to 114. The rent is a current-period expense, reducing profit and therefore equity by 6.

Assets 114 = Liabilities 0 + Equity 114.

A payment does not always reduce profit. Here it does because the payment settles the cost of rent already consumed in this period.

The studio receives equipment costing 24 on supplier credit

Equipment increases assets 24. The studio has not paid the supplier, so it also recognises a payable 24. Cash remains 114.

Assets 138 = Liabilities 24 + Equity 114.

A business can acquire a resource without an immediate cash outflow. The unpaid amount still matters: it is an obligation the studio must manage.

It completes a design service and receives 18

Assume the service has been fully delivered and the full 18 is earned. Cash rises to 132. Revenue 18 increases profit and equity.

Assets 156 = Liabilities 24 + Equity 132.

After the rent expense, profit from the events so far is 12: revenue 18 less rent 6.

A different customer pays 30 before any work is delivered

Cash rises to 162. The studio now owes the customer the agreed service, so the 30 is recorded as an advance liability in this simplified case. It is not revenue yet.

Assets 186 = Liabilities 54 + Equity 132.

Receiving money tells us that cash changed. It does not, by itself, tell us whether the business earned revenue.

Read the ending position

The studio has cash 162 and equipment 24, giving assets 186. It owes the supplier 24 and has a customer advance obligation 30, giving liabilities 54. Equity consists of the owner's contribution 120 plus profit 12, giving 132.

The equation connects all three:186 = 54 + 132.

This also explains why cash 162, revenue 18 and profit 12 answer different questions. Cash describes an available resource. Revenue describes what was earned from the completed service. Profit reflects revenue less the expense included in this example.

A balance is a check, not a conclusion

If the customer advance were incorrectly recorded as revenue, the equation could still balance. The classification and reported profit would be wrong. A balanced equation therefore does not prove that all transactions were recorded, measured, timed or classified correctly.

Before choosing an account, ask: What resource changed? What obligation changed? Was value earned, consumed or contributed by an owner?

Try it yourself

After these events, the studio pays 10 of the equipment payable. What changes?

Cash decreases 10 and the supplier payable decreases 10. Assets become 176, liabilities 44 and equity remains 132:176 = 44 + 132. This settles an existing obligation; it does not create another equipment expense.

Next in the learning path

ACC-F 02, Debits and Credits Without Memorising a Table, translates this same studio story into journal entries. The business event comes first; the recording follows.

This is a simplified fictional learning example, not a complete set of financial statements or entity-specific reporting advice.