Gross Profit: Calculated as . This measures the efficiency of the production process and the direct profitability of products before considering administrative overheads.
Operating Profit (EBIT): Calculated as . This reflects the performance of the core business activities, excluding the effects of financing (interest) and government levies (taxes).
Net Profit: The 'bottom line' figure calculated as . This is the final amount available to shareholders for dividends or reinvestment into the business.
Profit Margins: These are ratios expressed as percentages (e.g., ) used to compare profitability across different scales of operation.
Step 1: Identify Revenue: Sum all sales invoices issued during the period, regardless of whether payment was received.
Step 2: Calculate COGS: Determine the direct costs of the units sold. Formula: .
Step 3: Deduct Overheads: Subtract indirect costs such as rent, salaries, and utilities to find the operating profit.
Step 4: Adjust for Finance and Tax: Subtract interest payments on loans and estimated corporation tax to reach the final net profit figure.
Check the Margin: If an exam question asks for 'profitability,' they usually want a percentage margin, not just a raw dollar figure. A higher raw profit might actually represent lower efficiency if revenue is significantly higher.
Watch for Non-Cash Items: Always look for depreciation or 'provisions' in a list of expenses. These reduce profit but must be added back if you are asked to calculate the cash position.
The 'Cash Gap': Be prepared to explain why a profitable business might fail. The most common reason is over-trading—growing so fast that cash is tied up in stock and debtors, leaving no cash for immediate bills.
Consistency Check: Ensure that Gross Profit is always higher than Operating Profit, and Operating Profit is higher than Net Profit. If not, a calculation error has occurred.
Revenue is not Profit: Students often confuse 'making a sale' with 'making a profit.' A sale only contributes to profit if the price exceeds the total cost of providing the good or service.
The Depreciation Trap: Many assume depreciation is a cash payment. It is an accounting allocation of cost; no money leaves the bank account when depreciation is recorded.
Loan Repayments: Only the interest portion of a loan repayment is an expense that reduces profit. The repayment of the principal amount is a cash outflow but not a profit-reducing expense.