How to Calculate Net Income: Formula, Steps and Examples
How to calculate net income step by step: the net income formula, what to subtract, a full worked example for a company and a sole trader, and common mistakes.
Quick answer: To calculate net income, take total revenue and subtract every expense for the period: cost of goods sold, operating expenses, interest and other non-operating costs, and income tax. The net income formula is Net income = Total revenue - Total expenses. A positive result is a profit, a negative result is a net loss.
Knowing how to calculate net income matters because it is the number lenders, investors, buyers and tax forms all come back to. This guide walks through the formula in layers, shows a full worked example for a small company and a freelancer, and covers the adjustments that trip people up. If you are still deciding which profit figure you need, our comparison of gross profit vs net profit explains the difference, and clean records from an online invoice generator make the revenue side of the calculation far easier.
The net income formula in its three common forms
All three versions below give the same answer. They differ only in how much detail you show along the way.
| Version | Formula | When to use it |
|---|---|---|
| Basic | Total revenue - Total expenses | Quick checks, simple service businesses |
| From gross profit | Gross profit - Operating expenses - Interest - Taxes + Other income | Businesses that sell products and track COGS |
| Full multi-step | Revenue - COGS - Operating expenses +/- Other items - Income tax | Monthly reporting, loan applications, investor updates |
The multi-step version is the most useful because each subtotal tells you something. Gross profit shows whether your pricing covers direct costs. Operating income shows whether the core business is profitable. Net income shows what is left after financing costs and tax. Pick one version and use it consistently, so you never subtract cost of goods sold twice or leave interest out one month and in the next.
What goes into each line
Revenue
Revenue is everything you earned from selling goods or services in the period, net of returns, refunds and discounts you gave. Sales tax you collected is not revenue: it belongs to the tax authority. If you invoice clients, your invoice register is the starting point. Our guide to revenue vs profit covers what counts.
Cost of goods sold
COGS is the direct cost of what you sold: materials, inventory, direct production labour and freight in. A consultant may have almost none. A retailer may find COGS is the biggest number on the page. See how to calculate COGS for the inventory formula.
Operating expenses
These are the costs of running the business that are not tied to a specific unit sold: rent, salaries, software, marketing, insurance, professional fees and depreciation. The operating expenses guide lists what belongs here and what does not.
Other income and expenses
Items outside normal operations sit below operating income: interest earned on savings, interest paid on loans, a gain or loss on selling equipment, and one-off items such as a legal settlement.
Income tax
For a C corporation, federal income tax is an expense of the business. The IRS Form 1120 instructions tell corporations to multiply taxable income by 21% to find the regular federal income tax, and state taxes may apply on top. Sole proprietors and pass-through entities usually do not record income tax as a business expense, because the owner pays it personally.
How to calculate net income step by step
- Choose the period and method. Decide on the month, quarter or year, and whether you are using cash or accrual accounting. The cash vs accrual guide explains why the same business can show different net income under each.
- Total your revenue. Add up sales or invoiced amounts for the period, then subtract returns, refunds and discounts. Exclude sales tax collected.
- Subtract cost of goods sold to get gross profit.
- Subtract operating expenses to get operating income. Include depreciation on equipment you own.
- Add other income and subtract other expenses, such as interest, to get pre-tax income.
- Subtract income tax if the business itself pays it. The result is net income.
- Calculate net margin by dividing net income by revenue, so you can compare periods of different sizes.
- Sense-check the result against your bank balance and receivables. Big differences usually have a reason, but it should be one you can explain.
Worked examples: net income for a company and a freelancer
Example 1: a small print company
Harbor Print Co. is a small corporation taxed as a C corporation. Here is its year, laid out the same way a profit and loss statement would show it.
| Line | Amount |
|---|---|
| Gross sales | $412,000 |
| Less returns and discounts | -$7,000 |
| Net revenue | $405,000 |
| Cost of goods sold (paper, ink, outsourced finishing, production wages) | -$162,000 |
| Gross profit | $243,000 |
| Office and sales salaries | -$98,000 |
| Rent | -$30,000 |
| Marketing | -$14,500 |
| Software and subscriptions | -$6,200 |
| Insurance | -$5,300 |
| Depreciation on presses | -$9,000 |
| Other admin | -$4,000 |
| Total operating expenses | -$167,000 |
| Operating income | $76,000 |
| Interest income | $1,000 |
| Interest expense on equipment loan | -$7,000 |
| Pre-tax income | $70,000 |
| Federal income tax at 21% | -$14,700 |
| Net income | $55,300 |
Check the arithmetic: $405,000 - $162,000 = $243,000. Operating expenses add to $167,000, so operating income is $243,000 - $167,000 = $76,000. Other items net to -$6,000, giving pre-tax income of $70,000. Tax of 21% is $14,700, so net income is $70,000 - $14,700 = $55,300. State income tax, if any, would reduce it further; it is left out here to keep the example simple.
Margins for the year:
- Gross margin: $243,000 / $405,000 = 60.0%
- Operating margin: $76,000 / $405,000 = 18.8%
- Net margin: $55,300 / $405,000 = 13.7%
Our article on how to calculate profit margin goes deeper on what each margin tells you.
Example 2: a freelancer or sole proprietor
For a sole proprietor, the business-level figure is the net profit on Schedule C. Maya is a freelance designer with $96,000 of invoiced and collected revenue and these expenses:
| Expense | Amount |
|---|---|
| Subcontracted illustration | $8,000 |
| Software subscriptions | $2,400 |
| Payment processing fees | $2,100 |
| Depreciation on computer equipment | $1,800 |
| Home office | $1,500 |
| Marketing | $1,200 |
| Accounting fees | $900 |
| Total expenses | $17,900 |
Net profit is $96,000 - $17,900 = $78,100, a net margin of 81.4%. Maya took $60,000 out as owner draws during the year, but draws are not expenses, so they do not change the $78,100.
According to the IRS instructions for Schedule C, the net profit on line 31 is carried to Schedule 1 (Form 1040) and to Schedule SE, where self-employment tax is worked out. So her personal take-home is lower than $78,100 once income tax and self-employment tax are paid. Keep those taxes in mind when setting quarterly estimated payments. This is general information, not tax advice.
How net income differs by business structure
The arithmetic is the same for every business, but where net income is reported and which costs count as business expenses depends on how the business is set up for tax.
| Structure | Where the figure usually appears | Owner pay | Income tax inside the business? |
|---|---|---|---|
| Sole proprietor or single-member LLC (default) | Schedule C net profit | Draws, not an expense | No, the owner pays personally |
| Partnership or multi-member LLC | Partnership return, with each partner's share on a K-1 | Draws or guaranteed payments | No, partners pay personally |
| S corporation | S corporation return, passed through to shareholders | Wages to owner-employees are an expense; distributions are not | Generally no |
| C corporation | Corporate income tax return | Wages are an expense; dividends are not | Yes, so net income is after corporate tax |
This is why two businesses with identical sales and costs can report different net income. An owner who runs an S corporation and pays herself a $50,000 salary has $50,000 more expense on the business books than a sole proprietor who takes the same $50,000 as a draw. Neither owner is better or worse off because of that line alone; the difference is in which tax return the money passes through. When you compare your net income with another business, or with your own figures from before a change of structure, adjust for owner pay first.
For lending and valuation purposes, many lenders and buyers also "normalise" net income by adding back one-off costs, unusual owner perks and owner pay above a market salary. Keep notes on any unusual items during the year so you can explain them later.
Net income vs other figures people confuse it with
| Figure | What it includes | How it differs from net income |
|---|---|---|
| Gross profit | Revenue - COGS | Ignores overhead, interest and tax, so it is always higher |
| Operating income | Gross profit - operating expenses | Ignores interest, one-off items and tax |
| EBITDA | Operating income + depreciation and amortization (roughly) | Adds back non-cash charges; not a GAAP figure |
| Cash flow | Money in minus money out | Includes loan repayments, asset purchases and timing of payments |
| Retained earnings | Cumulative net income minus distributions | A running total on the balance sheet, not a single period |
Adjustments that change net income
Timing of invoices
Suppose you issue a $4,500 invoice on 20 December and the client pays on 15 January. Under accrual accounting, the $4,500 counts in December's revenue. Under cash accounting, it counts in January. Neither is wrong, but you must be consistent. Clear invoice dates and sequential invoice numbers make it easy to prove which period a sale belongs to.
Depreciation
A $27,000 press is not a $27,000 expense in the year you buy it under normal book accounting. It is spread over its useful life. Over three years with straight-line depreciation, that is $9,000 a year, which is the figure in the print company example.
Accrued and prepaid costs
Bills you owe but have not paid yet still belong in the period you used the service. Accrued expenses and prepaid items keep net income tied to the period that earned it.
Loan principal
Only the interest part of a loan payment is an expense. The principal reduces a liability on the balance sheet. Treating the full payment as an expense understates net income.
Common mistakes when calculating net income
- Counting sales tax as revenue. Collected sales tax is a liability. If you use a sales tax calculator to add tax to invoices, record the tax portion separately.
- Deducting owner draws. Draws are not expenses.
- Mixing personal and business costs. This inflates expenses and creates problems if you are ever audited.
- Forgetting unpaid bills. Under accrual accounting, a supplier invoice dated in the period counts even if you pay it next month.
- Using different categories each month. Consistent expense categories make month-to-month comparisons meaningful.
- Ignoring bad debts. If an invoice will never be paid, the revenue you recorded for it is overstated until you write it off.
How to use net income in decisions
Net income on its own is a scorecard. It becomes useful when you compare it with something: last month, last year, your budget, or a target. A falling net margin with rising revenue usually points to pricing, discounting or creeping overhead. A healthy net income with a shrinking bank balance usually points to slow-paying clients or heavy spending on equipment. Ratios such as debt to equity and the current ratio, covered in our guide to financial ratios for small business, add context that net income alone cannot give you.
Lenders and buyers also look at the trend. Three years of steady or rising net income tells a better story than one strong year, which is another reason to calculate it the same way every period.
A monthly routine for calculating net income
The calculation itself takes minutes. The time goes into making sure the inputs are complete. A simple monthly routine keeps it quick:
- Close your invoicing for the month. Make sure every completed job has an invoice dated in the month, and that credit notes or refunds are recorded.
- Reconcile bank and card accounts so every transaction is categorised once, and only once.
- Enter unpaid supplier bills if you use accrual accounting.
- Post depreciation for the month, usually one twelfth of the annual figure.
- Run the profit and loss report and check each subtotal: gross profit, operating income, pre-tax income, net income.
- Compare with last month and your budget. Write one line explaining any big movement.
- Set aside tax. If you are a sole proprietor, move a share of the month's net profit to a separate savings account for estimated payments.
Here is how a quick month-on-month comparison might look for the freelancer in the example above:
| Month | Revenue | Expenses | Net profit | Net margin |
|---|---|---|---|---|
| September | $8,200 | $1,450 | $6,750 | 82.3% |
| October | $7,400 | $2,150 | $5,250 | 70.9% |
Net profit fell by $1,500 even though revenue only fell by $800, because expenses rose by $700. That points the owner straight at the expense lines for October, perhaps an annual software renewal or a one-off subcontractor bill. Spotting that within a few days of month end is far easier than piecing it together in April.
Start with accurate revenue
Learning how to calculate net income is mostly about discipline: the same formula, the same categories and complete records every period. Revenue is the line everything else depends on, so make sure every sale is invoiced, dated and numbered. Create clean, professional invoices with the free invoice generator, pick a layout from our invoice templates, and your net income calculation will start from numbers you can trust. Your finished invoice downloads as a PDF, free and with no sign-up.
Frequently asked questions
What is the basic formula for net income?
The basic net income formula is total revenue minus total expenses. In practice you work through it in layers: revenue minus cost of goods sold gives gross profit, gross profit minus operating expenses gives operating income, then you add or subtract other income and expenses such as interest, and finally subtract income tax. The result is net income. If expenses are larger than revenue, the result is a net loss.
Is net income the same as profit?
Net income is one specific kind of profit: the amount left after every expense for the period, including interest and income tax. People often say profit when they mean gross profit or operating profit, which are larger numbers because fewer costs have been taken out. When a lender, buyer or accountant asks for net income, they want the bottom line of the profit and loss statement, not a figure from higher up.
Do owner draws reduce net income?
No. Owner draws and distributions are payments of profit to the owner, not business expenses, so they do not reduce net income. A sole proprietor who earns $78,100 of net profit and takes $60,000 out of the business still has $78,100 of net profit for tax purposes. Salaries paid to an owner who is a W-2 employee of their own corporation are different: those are wages and do count as an expense.
How do I calculate net income from an income statement?
Find total revenue at the top, then read down. Subtract cost of goods sold to reach gross profit, subtract the operating expense total to reach operating income, add other income and subtract other expenses such as interest, then subtract the income tax line. Most accounting software prints the net income line at the bottom of the report, but checking each subtotal by hand catches miscategorised items and duplicated expenses.
Is net income calculated before or after tax?
Net income is after tax. The figure before income tax is called pre-tax income or earnings before tax. For a C corporation, the income tax line is a business expense, so net income is noticeably lower than pre-tax income. For sole proprietors and most single-member LLCs, the business does not pay income tax itself, so the Schedule C net profit is effectively the business's pre-tax figure and the owner pays tax personally.
What is a good net income margin for a small business?
There is no single good number, because margins depend heavily on the industry. Service businesses with few direct costs often keep a much larger share of revenue than retailers, restaurants or construction firms. The most useful benchmark is your own history: track net margin each month or quarter and investigate any fall. Comparing against businesses with a similar model and size is more meaningful than comparing against a broad average.
Can a business have positive net income but no cash?
Yes, and it is common. Under accrual accounting, an invoice counts as revenue when you issue it, even if the client has not paid. Loan principal repayments, inventory purchases and equipment purchases also use cash without appearing as expenses in full. So a business can report healthy net income while its bank balance falls. That is why owners should read the cash flow statement and the receivables report alongside the profit and loss.
How often should I calculate net income?
Monthly is a good rhythm for most small businesses. It is frequent enough to spot problems such as rising costs or unpaid invoices while there is still time to fix them, and it makes quarterly estimated tax payments and year-end filing much easier. At minimum, calculate it quarterly. Use the same method and the same expense categories each time so the numbers are comparable from period to period.
Invoice Creator Editorial Team
Guides on invoicing, cash flow and small-business finance from Invoice Creator, operated by Next Software Development Company. Content is reviewed for accuracy against the fields our own invoice generator produces.
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