Purpose and Structure
An income statement summarizes a business’s financial performance over a specified period. A single-step income statement uses one main calculation: it adds revenues and gains, adds expenses and losses, and subtracts the second total from the first. It does not divide the calculation into intermediate subtotals such as gross profit or operating income.
The format is useful when the goal is to present a clear overall result without separating income statement items into multiple calculation stages. The grouping is broad: all revenues and gains appear together, and all expenses and losses appear together. The resulting difference is net income when the first total exceeds the second, or a net loss when the second total exceeds the first.
A revenue is an amount earned from providing goods or services. A gain is an increase in income from a transaction that is not presented as ordinary revenue. An expense is a cost incurred in conducting business or earning revenue; a loss is a decrease in income from an event or transaction that is not presented as an ordinary expense. The specific names of the accounts depend on the business, but the single-step calculation treats both members of each pair as part of the same total.
The statement should identify the business and the period covered, for example, “For the year ended December 31.” Because the statement reports performance over time, it differs from a balance sheet, which reports financial position at a particular date. The account amounts used should be the amounts recognized for the reporting period, not simply the cash collected or paid during it.
Why the Single-Step Calculation Works
The net result for a period reflects income-producing activity: revenues and gains increase the result, while expenses and losses decrease it. To combine those effects, first add all positive income statement items and then subtract all negative income statement items. Grouping items into one total on each side does not change the arithmetic.
The formula follows from ordinary addition and subtraction. If the revenues and gains are \(R_1,\ldots,R_m,G_1,\ldots,G_j\), and the expenses and losses are \(E_1,\ldots,E_k,L_1,\ldots,L_n\), then the period’s net result is
Regrouping the additions gives total revenues and gains minus total expenses and losses. No intermediate subtotal is needed to obtain that result. This is the defining calculation of the single-step format.
Use the income statement balances for the stated reporting period. Do not substitute cash receipts or payments for recognized amounts.
Add every revenue and gain that belongs to the period. Present the items together, followed by their total.
Add every expense and loss that belongs to the period, and show their total separately from the revenue-and-gain total.
Subtract total expenses and losses from total revenues and gains. Label a positive result net income and a negative result net loss.
Worked Statements
The examples below use hypothetical businesses. Each statement groups items by whether they increase or decrease the period’s result; it does not introduce intermediate subtotals.
Worked Example: A Service Business With a Gain
A consulting firm reports annual service revenue of $184,000, interest revenue of $2,400, and a gain on the sale of equipment of $1,600. Its expenses for the year are salaries of $79,000, rent of $24,000, supplies of $8,500, and depreciation of $6,300. Prepare a single-step income statement and calculate net income.
Method. Identify the period’s revenues and gain, then identify its expenses. Add the two groups separately before subtracting.
Step 1: Total revenues and gains. The revenue amounts are service revenue of $184,000 and interest revenue of $2,400. Include the equipment-sale gain in the same group:
Step 2: Total expenses and losses. Add salaries, rent, supplies, and depreciation:
Step 3: Calculate net income.
| Consulting Firm — For the Year | Amount |
|---|---|
| Revenues and gains | |
| Service revenue | $184,000 |
| Interest revenue | $2,400 |
| Gain on sale of equipment | $1,600 |
| Total revenues and gains | $188,000 |
| Expenses and losses | |
| Salaries expense | $79,000 |
| Rent expense | $24,000 |
| Supplies expense | $8,500 |
| Depreciation expense | $6,300 |
| Total expenses and losses | $117,800 |
| Net income | $70,200 |
Check. The revenue-and-gain total exceeds the expense total by $70,200, matching the reported net income. The method avoids the common mistake of leaving the equipment-sale gain out of the calculation merely because it is not service revenue.
Worked Example: A Retailer With Net Sales and a Loss
A retailer’s net sales for the year are $520,000. Cost of goods sold is $312,000, wages expense is $66,000, occupancy expense is $34,000, and administrative expense is $21,000. The business also reports a $4,500 gain and a $3,500 loss. Prepare a single-step statement and calculate net income.
Method. Use the given net sales as the revenue amount, include the gain with revenues, and include the loss with expenses. Do not add a gross-profit subtotal.
Step 1: Total revenues and gains.
Step 2: Total expenses and losses. First add the four stated expenses:
Then include the loss:
Step 3: Calculate net income.
| Retailer — For the Year | Amount |
|---|---|
| Revenues and gains | |
| Net sales | $520,000 |
| Gain | $4,500 |
| Total revenues and gains | $524,500 |
| Expenses and losses | |
| Cost of goods sold | $312,000 |
| Wages expense | $66,000 |
| Occupancy expense | $34,000 |
| Administrative expense | $21,000 |
| Loss | $3,500 |
| Total expenses and losses | $436,500 |
| Net income | $88,000 |
Check. The difference between $524,500 and $436,500 is $88,000. The common mistake here is to subtract cost of goods sold to calculate gross profit, then subtract it again among expenses. In this single-step statement, cost of goods sold is included once in the total expenses and losses.
Worked Example: Separating Income Statement Items From Other Accounts
A design studio reports consulting revenue of $246,000, interest revenue of $1,800, and a gain on the sale of a vehicle of $2,700. Its wages expense is $108,000, rent expense is $28,800, software expense is $9,600, depreciation expense is $12,400, and theft loss is $3,200. The account list also includes cash, equipment, prepaid insurance, accounts payable, a $25,000 owner contribution, and an $8,000 distribution to the owner. Prepare a single-step income statement and calculate net income.
Method. Include revenues, gains, expenses, and losses for the period. Exclude balance-sheet accounts and owner transactions: they are not revenues, gains, expenses, or losses in this calculation.
Step 1: Total revenues and gains.
Step 2: Total expenses and losses.
Step 3: Calculate net income.
| Design Studio — For the Year | Amount |
|---|---|
| Revenues and gains | |
| Consulting revenue | $246,000 |
| Interest revenue | $1,800 |
| Gain on sale of vehicle | $2,700 |
| Total revenues and gains | $250,500 |
| Expenses and losses | |
| Wages expense | $108,000 |
| Rent expense | $28,800 |
| Software expense | $9,600 |
| Depreciation expense | $12,400 |
| Theft loss | $3,200 |
| Total expenses and losses | $162,000 |
| Net income | $88,500 |
Check. The income statement items total $250,500 on the increase side and $162,000 on the decrease side, producing $88,500 of net income. The cash, equipment, prepaid insurance, and accounts payable balances are asset or liability accounts, not income statement items. The owner contribution and distribution are owner transactions, not revenues or expenses.
Common Mistake: Treating Every Change as Income
The account name or the fact that cash changed does not by itself determine whether an item belongs on the income statement. A contribution from an owner is not revenue earned by the business, and a distribution to an owner is not an expense incurred to operate it. Likewise, a cash balance or equipment balance is not income merely because it appears in the account records.
For the design studio above, an incorrect calculation might add the $25,000 owner contribution to revenues and gains, and add the $8,000 owner distribution to expenses and losses:
The correction is to exclude both owner transactions from the income statement. The correct net income remains $250,500 minus $162,000, or $88,500. This illustrates a useful classification check: include an item because it is a revenue, gain, expense, or loss for the period, not simply because it changed cash or equity.
What the Format Emphasizes
A single-step statement makes the overall period result easy to locate, but it does not show intermediate measures. For example, it does not calculate gross profit by subtracting cost of goods sold from net sales, nor does it separate expenses into stages to calculate an operating subtotal. Even when an account could be discussed in more than one business context, the single-step arithmetic remains the same: place all included revenues and gains in one group and all included expenses and losses in the other.
This broad presentation makes accurate account classification especially important. Before totaling, check that each item:
- belongs to the reporting period and is a revenue, gain, expense, or loss;
- appears in the correct group and is included only once; and
- is not an asset, liability, owner contribution, or owner distribution.
After totaling, verify the result by subtracting the expense-and-loss total from the revenue-and-gain total. If the answer is negative, report a net loss rather than calling the negative amount net income. A correctly organized single-step statement presents a direct, auditable path from the account balances to the period’s net result.
Check Your Understanding
For each hypothetical business, group the stated items and calculate the single-step result. Answers are shown at the end of each question.
- A repair shop has repair revenue of $92,000 and a gain of $2,000. It has wages expense of $54,000, rent expense of $11,000, and supplies expense of $3,000. What is net income? (Answer: $26,000 net income.)
- A studio reports service fees of $145,000 and a gain of $1,500. Its wages expense is $62,000, rent expense is $18,000, and depreciation expense is $6,500. Calculate the two group totals and net income. (Answer: Revenues and gains $146,500; expenses and losses $86,500; net income $60,000.)
- A retailer has net sales of $300,000, cost of goods sold of $177,000, wages expense of $42,000, rent expense of $19,000, utilities expense of $8,000, a gain of $2,500, and a loss of $1,000. Calculate net income without adding a gross-profit subtotal. (Answer: Revenues and gains $302,500; expenses and losses $247,000; net income $55,500.)
- A firm reports fees of $410,000, interest revenue of $4,200, a gain of $6,800, salaries expense of $205,000, rent expense of $48,000, depreciation expense of $16,000, and a loss of $9,000. Its account list also shows an owner contribution of $30,000 and an owner distribution of $12,000. What is net income? (Answer: Revenues and gains $421,000; expenses and losses $278,000; net income $143,000. Exclude both owner transactions.)
- A wholesaler’s net sales are $680,000 after sales returns have already been accounted for. Cost of goods sold is $408,000, wages expense is $91,000, occupancy expense is $37,000, depreciation expense is $18,000, a gain is $12,000, and a loss is $7,000. Calculate net income, including each listed item once. (Answer: Revenues and gains $692,000; expenses and losses $561,000; net income $131,000.)