Why Can Net Income Fall When Operating Profit Rises?
Break down finance income and costs, other gains and losses, and income tax between operating profit and net income. See why improving operations can produce a different outcome for shareholders.
The difference between operating profit and net income arises from items below operating profit, such as finance income and costs, other gains and losses, and income tax. These measures answer different questions and are not interchangeable. Use operating profit as a starting point for assessing operating performance, then follow interest, taxes, and profit attribution to establish the final outcome for shareholders.
Do not lump the entire difference into other factors
Working from operating profit down to net income, list interest expense, valuation gains and losses on financial assets, foreign exchange gains and losses, disposal gains and losses, and income from associates separately. Their presentation may vary with the company's industry and accounting policies. A recurring interest burden at a heavily indebted company and a temporary asset disposal gain require different treatment in a forecast. Removing every item as non-recurring simply because it is classified outside operations can understate ongoing costs.
Income tax expense can differ from cash tax paid
Income tax expense recognized in profit or loss may include deferred tax effects as well as current tax. If net income changes sharply despite similar pretax profit, check movements in the income tax note. Substituting cash taxes paid from the cash flow statement into a net income calculation produces a different figure from accounting profit. When pretax profit is very small or there is a pretax loss, a simple effective tax rate may be unintuitive. Examine the reasons for tax items and their amounts before focusing on the ratio.
Document the reasons for earnings adjustments
Analysts may calculate normalized earnings by excluding items unlikely to recur, but should present the result separately from reported net income. Removing a gain while ignoring its related tax effect can overstate the adjustment, while excluding losses but retaining gains introduces bias. Start with reported figures and record each adjustment, its amount, whether it is after tax, and the evidence concerning recurrence. Do not present the adjusted result as a replacement for official earnings. If discontinued operations are presented separately, distinguish them from continuing operations to better assess the profitability of the businesses that will remain.
Worked example
Hypothetical example: All amounts below are in units of KRW 100 million. In the prior period, operating profit of 100, net finance costs of 10, other gains and losses of 0, and income tax expense of 18 produce net income of 72. In the current period, operating profit rises to 120, but net finance costs of 40, other losses of 10, and income tax expense of 14 leave net income of 56. Operating profit increased by 20%, while net income declined by approximately 22.2%. In this case, assess whether the higher borrowing costs will persist separately from the business's operating competitiveness.
What to check
- Reconcile operating profit to net income line by line.
- Distinguish recurring finance costs from valuation movements.
- Do not confuse income tax expense with actual taxes paid.
- For adjusted earnings, state whether adjustments are after tax and why items were excluded.
Sources and primary materials
This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.