Q.Fill in the blank: If purchase of Machinery is recorded in purchase book, so it is called as error of ________.

Errors of Principle: The "Wrong Box" Mistake

Think of your home. You have a drawer for socks, a shelf for books, and a cupboard for dishes. Now imagine you come home tired and throw your socks into the book shelf. The socks are still in the house — nothing is lost — but they are in the wrong place. When you need socks, you will look in the drawer and find nothing. The system breaks.

That is exactly what an error of principle is in accounting.

The Precise Meaning

An error of principle occurs when a transaction is recorded in the wrong class of account. In accounting, every transaction must be classified as either:

• A personal account (for people, firms, banks)
• A real account (for assets, property, goods)
• A nominal account (for expenses, incomes, gains, losses)

When you debit or credit the wrong type of account — for example, treating a capital expense as a revenue expense — you have committed an error of principle.

Why It Matters

Errors of principle do not affect the trial balance. The trial balance will still tally because the double entry is complete — one debit, one credit — but both entries are in the wrong kind of account. This means:

• The profit figure in the Profit & Loss Account will be wrong.
• The Balance Sheet will show incorrect assets or liabilities.
• Financial statements become misleading.

For example, if you buy a computer (an asset that will last years) and record it as "Office Expenses" (a revenue expense), the profit is understated in the current year and the asset never appears on the Balance Sheet. The business looks poorer than it really is.

Accounting Treatment: How to Correct It

The correction of an error of principle requires reversing the wrong entry and passing the correct entry. The general rule is:

1. Remove the wrong effect by reversing the incorrect debit/credit.
2. Record the correct debit/credit.

Let us take a concrete example.

Example: A business buys furniture for ₹50,000 and records it as "Purchases" (which is meant for goods bought for resale).

• Wrong entry passed:

  Purchases A/c Dr. ₹50,000

    To Cash/Bank A/c ₹50,000

• What should have been:

  Furniture A/c Dr. ₹50,000

    To Cash/Bank A/c ₹50,000

Correction entry:

Why this works:

• Furniture A/c (a real account) should have been debited — we now debit it.
• Purchases A/c (a nominal account) was wrongly debited — we credit it to cancel that wrong debit.
• Cash/Bank was correctly credited in both entries, so no change is needed there.

A Second Example: Revenue vs. Capital Expenditure

This is the most common error of principle in exams.

Scenario: A company spends ₹20,000 on repairing an old machine (revenue expenditure — debited to Repairs A/c). But the same amount was spent on installing a new machine (capital expenditure — should be debited to Machinery A/c). The accountant wrongly debited Repairs A/c for the installation cost.

Correction entry:

When the Error Affects Profit — The Suspense Account Connection …