What's my gross margin?

Bottomline calculates your gross margin from your accounting data and shows whether it is improving or declining month over month.

What helped profit and what hurt it?

Bottomline breaks down the specific line items that drove your profit up or down compared to the prior month.

Why did my profit go up or down vs. last month?

Bottomline compares every line item on your P&L and shows exactly which categories changed and by how much.

Are my expenses in line with my revenue?

Bottomline benchmarks your expense-to-revenue ratio and flags categories that are growing faster than your top line.

What do my income statement and balance sheet look like?

Bottomline presents your income statement and balance sheet in plain language with month-over-month comparisons built in.

What’s my net margin?

Net margin is the final answer: out of every dollar of revenue, how many cents did you actually keep? Here's how to find it in your accounting software.

6 min read

The short answer

Net margin = Net Income / Total Revenue x 100. It tells you what percentage of your revenue survives after every single expense. Your P&L report has both numbers. If your net margin is 7%, you keep 7 cents of every dollar. Below, we show you exactly how to find this in QuickBooks and Xero.

Why net margin is the number that keeps business owners up at night

Your business did $120,000 in revenue last month. After materials, payroll, rent, software, insurance, ad spend, and everything else, you kept $8,400. That is a 7% net margin. It means 93 cents of every dollar you earned went to someone or something else.

Now imagine your revenue dips 10% next month, down to $108,000. But your costs are mostly fixed. That 7% margin doesn't just shrink proportionally. It might go to 2%, or negative. A small revenue fluctuation creates a large profit swing when your margins are thin.

Net margin is the number that tells you how much room you have to absorb a bad month, invest in growth, or simply sleep at night. It is also the number that shows whether your business is actually getting more efficient over time or just getting busier without getting more profitable.

What net margin tells you that revenue alone cannot

Revenue growth feels good. But if your costs grow faster, you are working harder for less. Net margin gives you that perspective:

Healthy net margins (10-20% for most small businesses): You have room to absorb surprises, invest in growth, and build cash reserves. Your pricing and cost structure are working.
Thin net margins (3-7%): You are profitable but fragile. One lost client, one unexpected expense, or one slow collection month can push you into the red. This is where most small businesses live.
Negative net margin: You lost money. It happens. But if it happens two months in a row, you need to understand exactly which expense categories are responsible.

The trend matters more than any single month. A business at 5% margin that is improving each quarter is in a healthier position than one at 12% that is declining.

How to calculate your net margin in QuickBooks Online (4 steps)

1
Open the Profit and Loss report
From the left sidebar, click Reports. Search for “Profit and Loss” and open it. Set the date range to the current month and click Run report.
2
Find Net Income and Total Income
Total Income is at the top of the report. Scroll to the very bottom to find Net Income (or Net Loss if it is negative). These are your two numbers.
3
Calculate net margin
Divide Net Income by Total Income, then multiply by 100. Example: $8,400 / $120,000 = 7% net margin.
4
Compare to prior months
Use the “Previous period” comparison option or manually change the date range to last month. Calculate the margin for both. Is it trending up, down, or flat?

Total time: about 3 minutes. The P&L has both numbers you need. The only math is one division.

How to calculate your net margin in Xero (3 steps)

1
Go to Accounting → Reports → Profit and Loss
Set the date range to the current month. Select “Compare with: Previous Period” so you see both months at once. Click Update.
2
Find Total Revenue and Net Profit
Total Revenue is at the top. Net Profit (or Net Loss) is at the very bottom of the report.
3
Calculate and compare
Divide Net Profit by Total Revenue for each month. Compare the percentages. Example: This month $8,400 / $120,000 = 7%. Last month $10,200 / $115,000 = 8.9%. Margin shrank 1.9 points even though revenue grew.

Total time: about 3 minutes. Xero's built-in comparison makes it easy to see both months without running the report twice.

What it takes to track net margin consistently

Finding the number is easy. Making it useful takes a little more:

3 minutes per month to pull the P&L and do one division.
A log of past margins so you can see the trend. A single month tells you little. Six months of data tells you a story.
Diagnosis when it changes. Knowing your margin dropped 2 points is step one. Knowing why requires digging into individual expense categories, comparing them to prior months, and figuring out which ones drove the change. That can take another 15-20 minutes.

Or track your net margin automatically, every month

Bottomline calculates your net margin from your QuickBooks or Xero data on the first of every month. It shows the current number, the trend, and tells you exactly which expense categories changed:

Net margin

Revenue $120,000/Net income $8,400/Margin 7.0%

Down 1.9 points from last month (8.9%)

From a real Bottomline report. Margin calculations come directly from your accounting data.

When your margin changes, Bottomline also tells you what drove it. Instead of “margin is down 1.9 points,” you see “ad spend increased $3,200 while revenue grew $5,000, payroll added $2,800 from a new hire.” The diagnosis is built into the report, so you do not have to dig through individual expense lines yourself.