What an Income Statement Tells You
The Income Statement is the financial story of a business over a period of time — a month, a quarter, or a year. It answers one fundamental question: Did this business make more money than it spent?
The Core Formula
Revenue − Expenses = Net Income
If revenue is greater than expenses, the business has a net income (profit). If expenses are greater than revenue, the business has a net loss. It really is that simple at the top level — but the details within the statement tell you why the business is profitable or losing money.
Structure of an Income Statement
A well-structured Income Statement flows top to bottom through distinct sections:
| Section | What It Contains |
|---|---|
| Revenue | All income from selling goods or services. May be split by product line or sales channel. |
| Cost of Goods Sold (COGS) | Direct costs of producing the goods sold — ingredients, direct labor, packaging. |
| Gross Profit | Revenue minus COGS. Shows how much is left to cover operating expenses. |
| Operating Expenses | Indirect costs of running the business — rent, utilities, wages, marketing, insurance. |
| Operating Income | Gross Profit minus Operating Expenses. Profit from core business operations. |
| Other Income / Expenses | Non-operating items — interest income, interest expense, one-time gains or losses. |
| Net Income | The bottom line. Operating Income plus Other Income minus Other Expenses. |
Gross Profit = Revenue − Cost of Goods Sold
Gross Profit tells you if the business is pricing its products correctly. If gross profit is negative, the business is selling products for less than they cost to make. No amount of cost-cutting in operating expenses can fix that.
How to Read a P&L
Reading an Income Statement isn't just about checking if the bottom line is positive. Here's what a bookkeeper looks for:
- Gross Margin %: Gross Profit ÷ Revenue. If a bakery's gross margin is 65%, that means for every ₱100 in sales, ₱65 is left after ingredient costs. Track this month to month — a declining gross margin means costs are rising faster than prices.
- Expense ratios: Compare each expense to revenue. If rent was 8% of revenue last quarter and 12% this quarter, either rent went up or revenue went down. Either way, something needs attention.
- Net Margin %: Net Income ÷ Revenue. A healthy small business might have a net margin of 10–20%. Below 5%, the business is vulnerable to small downturns.
- Comparisons: Always compare to prior periods. A single month's P&L is just a snapshot. Trends across months and years tell the real story.
What Trends to Look For
Month-to-month: Is revenue growing or shrinking? Are any expense categories increasing faster than revenue? Are there seasonal patterns (a bakery might see higher sales in December holidays)?
Year-to-year: Compare the same month across years. This removes seasonal distortion. Is December 2025 better than December 2024? That's the real growth signal.
Watch for: Revenue growing but gross profit shrinking (rising costs), operating expenses growing faster than revenue (overhead bloat), or net income turning negative despite positive operating income (too much debt service).
Common Mistakes
- Mixing personal expenses in: The owner's personal groceries in "Cost of Goods Sold" inflate expenses and hide true profitability.
- Misclassifying COGS vs. operating expenses: Putting ingredient costs in operating expenses instead of COGS inflates gross profit and gives a false picture of product pricing.
- Forgetting to record accruals: Expenses incurred but not yet billed (like utilities) must be accrued. Without them, the period's profit is overstated.
- Recording capital purchases as expenses: Buying a ₱50,000 oven is not an expense — it's a fixed asset. Recording it as an expense makes that month look like a massive loss.
- Ignoring the P&L until tax time: If the only time anyone looks at the Income Statement is when taxes are due, it's too late to fix problems. Review monthly.
Bookkeeper's role
As a bookkeeper, you don't just record transactions — you're the first line of defense. If you see an expense that looks unusual, or a revenue line that dropped 40% in one month, flag it to the business owner. Your monthly review of the P&L is where you add the most value.
Sample Income Statement — Sweet Crumbs Bakery
For the year ended December 31, 2025. All figures in Philippine Pesos (₱).
| Line Item | Amount (₱) |
|---|---|
| REVENUE | |
| Sales Revenue — Retail (4000) | 680,000 |
| Sales Revenue — Wholesale / Catering (4100) | 220,000 |
| Total Revenue | 900,000 |
| COST OF GOODS SOLD | |
| COGS — Ingredients (5000) | 252,000 |
| COGS — Packaging (5100) | 36,000 |
| COGS — Direct Labor (5200) | 108,000 |
| Total COGS | 396,000 |
| GROSS PROFIT | 504,000 |
| OPERATING EXPENSES | |
| Rent Expense (6000) | 96,000 |
| Utilities Expense (6100) | 54,000 |
| Wages Expense — Staff (6200) | 120,000 |
| Marketing and Advertising (6300) | 27,000 |
| Insurance Expense (6400) | 18,000 |
| Depreciation Expense (6500) | 15,000 |
| Miscellaneous Expense (6900) | 6,000 |
| Total Operating Expenses | 336,000 |
| OPERATING INCOME | 168,000 |
| OTHER INCOME / (EXPENSES) | |
| Interest Expense on Loan | (8,000) |
| Interest Income on Savings | 1,500 |
| Net Other Income / (Expenses) | (6,500) |
| NET INCOME | 161,500 |
Quick analysis
Gross Margin = ₱504,000 ÷ ₱900,000 = 56%. Net Margin = ₱161,500 ÷ ₱900,000 = 17.9%. COGS is 44% of revenue — reasonable for a bakery. Wages (₱120,000) are the largest operating expense at 13% of revenue. The business is profitable and healthy.