# What Is Net Profit Margin?

Net profit margin is the percentage of revenue a business keeps after paying every cost: job costs, overhead, and usually interest and taxes. Net profit margin % = Net profit ÷ Revenue × 100. An HVAC company with $1,800,000 in revenue and $162,000 left after job costs and overhead has a 9% net margin before taxes.

## Key takeaways

- Net profit margin = net profit ÷ revenue. It's the bottom line of your profit and loss statement shown as a percentage.
- Gross margin pays for the job. Net margin is what's left after the job and the business (overhead) are both paid for.
- Say whether you mean before or after taxes. Most owners track pre-tax net, because tax depends on entity type and personal situation.
- If you don't pay yourself a market wage on the books, your net margin is overstated. Your labor isn't free.
- Net margin is set by three things you control: price, direct job costs and overhead. Work backward from the net you want.

## How does net profit margin work?

Net profit margin shows how many cents of every revenue dollar the business actually keeps. Start with revenue, subtract [cost of goods sold](https://www.brix.so/learn/cost-of-goods-sold) to get gross profit, subtract [overhead](https://www.brix.so/learn/overhead) to get operating profit, then subtract interest and, if you want the after-tax figure, income taxes. Divide what's left by revenue.

**Net profit margin formulas**

```
Net profit = Revenue − COGS − Overhead − Interest − Taxes   |   Net profit margin % = Net profit ÷ Revenue × 100
```

Where:
- Revenue = everything you billed for the period, before sales tax
- COGS = direct job costs: materials, burdened field labor, subcontractors, permits, disposal
- Overhead = the cost of running the business: office staff, rent, trucks, insurance, software, marketing, owner's salary
- Taxes = leave out for pre-tax net margin, which is easier to compare year to year

> **Worked example: a year at an HVAC company**
>
> Illustrative numbers. Revenue: $1,800,000. Direct job costs (equipment, parts, burdened tech labor, permits): $1,026,000. Gross profit: $774,000, a 43% [gross margin](https://www.brix.so/learn/gross-margin).
>
> Overhead (CSRs and dispatch, rent, fleet, insurance, marketing, software): $612,000, or 34% of revenue.
>
> Net profit before taxes = $1,800,000 − $1,026,000 − $612,000 = **$162,000**. Net profit margin = $162,000 ÷ $1,800,000 = **9%**.
>
> One catch: the owner took no salary through payroll. Hiring a general manager to do the owner's job would cost about $90,000. Count that, and real net profit is $72,000, a **4% margin**.

## What's the difference between gross and net profit margin?

Gross profit margin subtracts only the direct cost of the jobs; net profit margin subtracts overhead as well. Gross margin answers "do my prices cover the work?" Net margin answers "does the business make money?" A shop can have a healthy gross margin and still lose money if overhead is bigger than gross profit.

**Gross vs. net margin on the same HVAC company**

| Line | Amount | % of revenue |
| --- | --- | --- |
| Revenue | $1,800,000 | 100% |
| Cost of goods sold | $1,026,000 | 57% |
| Gross profit | $774,000 | 43% (gross margin) |
| Overhead | $612,000 | 34% |
| Net profit before taxes | $162,000 | 9% (net margin) |

_Illustrative. The gap between gross and net margin is your overhead as a share of revenue. Read more in [how to read a profit and loss statement](https://www.brix.so/learn/profit-and-loss-statement)._

## How much net profit does one job make?

A single job's net profit is its price minus its direct costs minus its share of overhead. Most owners skip the overhead share, which is how a job with a respectable markup ends up making almost nothing.

> **Worked example: the $14,000 roof**
>
> Illustrative numbers. A roof replacement sells for $14,000 with $9,600 of direct cost: a 45.8% [markup](https://www.brix.so/learn/markup) and $4,400 of gross profit.
>
> The roofing company's overhead runs 30% of revenue, so this job has to carry $14,000 × 0.30 = $4,200 of overhead.
>
> Net profit on the job = $4,400 − $4,200 = **$200**, a 1.4% net margin. Two extra days of crew time or one missed change order turns it into a loss.

## What is a good net profit margin for a contractor?

A good net profit margin is one that pays you a fair return for the risk of owning the business, on top of a market salary for the work you do in it. There's no reliable public average for small trades shops, so set a target deliberately: decide the profit dollars you want, divide by expected revenue, and price so your gross margin covers overhead plus that net.

1. **Pay yourself on the books first.** Put a market salary for your role in overhead. Profit is what's left after that, not instead of it.
2. **Pick a profit goal in dollars.** Think about what the business needs: a cash cushion for slow months, a truck replacement fund, debt payoff, and a return on the money you've put in.
3. **Turn it into a margin.** Divide the profit goal by expected revenue. $150,000 on $1,500,000 of revenue is a 10% net margin target.
4. **Add overhead to get your gross margin target.** If overhead is 32% of revenue, every job needs a 42% gross margin on average. Convert that to a markup with the [markup vs. margin](https://www.brix.so/learn/markup-vs-margin) table.

## Net profit margin by trade

What separates a thin net margin from a healthy one is different in each trade. These are the overhead lines and pricing habits that most often eat net profit.

**What eats net profit in each trade**

| Trade | Overhead that grows fastest | Pricing leak that hits net | Lever that helps most |
| --- | --- | --- | --- |
| HVAC | Fleet, CSR and dispatch staff, peak-season marketing | Replacements discounted to win against price shoppers | Maintenance agreements that keep techs billable in shoulder seasons |
| Plumbing | After-hours on-call pay, vehicles, stocked trucks | Unbilled second trips and callbacks | Flat-rate pricing on common tasks so speed earns profit |
| Electrical | Estimating time on bids you don't win, licensing and continuing education | Long bids with no material escalation clause | Tracking [close rate](https://www.brix.so/learn/close-rate) by job type and bidding fewer losers |
| Roofing | Sales commissions, canvassing and lead costs, office production staff | Storm work priced fast and job-costed never | Job costing every roof against its estimate |
| Landscaping | Equipment and trailers, yard rent, winter payroll | Maintenance routes underbid by drive time | Pricing per visit from real crew hours, plus enhancement upsells |
| Cleaning | Hiring and training, supervision, insurance and bonding | Recurring prices never raised as wages rise | Annual price reviews tied to labor cost |

## How do you improve net profit margin?

You improve net profit margin by raising gross margin on each job, getting more billable work through the same overhead, or cutting overhead that doesn't bring in revenue. Volume helps only if each extra job carries a positive [contribution margin](https://www.brix.so/learn/contribution-margin); busy at a loss is still a loss.

1. **Raise prices where you're underpriced.** Use [job costing](https://www.brix.so/learn/job-costing) to find the job types that lose money.
2. **Spread overhead over more billable hours.** Better [technician utilization](https://www.brix.so/learn/technician-utilization) lowers overhead per job without cutting anything.
3. **Stop leaking leads.** Every missed call or unanswered estimate is overhead you paid for (phones, ads, CSR time) with no job to show for it.
4. **Review overhead line by line once a year.** Software, insurance and vehicle costs creep up quietly.
5. **Collect faster.** Profit on paper isn't cash. See [cash flow for contractors](https://www.brix.so/learn/cash-flow-for-contractors).

## Common net profit margin mistakes

- **Counting owner draws as profit.** If your pay isn't on the books as a salary, net margin includes your wages and looks better than the business really is.
- **Judging jobs by gross margin only.** A job has to carry its share of overhead before it makes anything.
- **Comparing pre-tax and after-tax numbers.** Say which one you mean, and compare like with like.
- **Confusing profit with cash.** Unpaid invoices, equipment loan principal and owner distributions all affect cash but not net profit the same way.
- **Looking once a year.** A monthly [profit and loss statement](https://www.brix.so/learn/profit-and-loss-statement) shows a slide while there's still time to fix it.

BRIX syncs customers, invoices and payments with QuickBooks and keeps expenses categorized as they come in, so your monthly profit and loss is ready to read without a weekend of catch-up.

- [QuickBooks sync](https://www.brix.so/integrations/quickbooks): Syncs customers, invoices and payments with QuickBooks so the books match the jobs.
- [Bookkeeping and tax help](https://www.brix.so/features/bookkeeping-taxes): Keeps expenses categorized, tracks 1099 subcontractors and sales tax, and reminds you of quarterly estimated tax dates. BRIX does not file taxes or give tax advice.

## Frequently asked questions

### How do you calculate net profit margin?

Subtract cost of goods sold, overhead, interest and (for an after-tax figure) taxes from revenue, then divide what's left by revenue. A company with $1,800,000 of revenue and $162,000 of pre-tax net profit has a 9% net profit margin before taxes.

### What is a good net profit margin for a small trades business?

There's no reliable public average for small trades shops, so set your own target. Pay yourself a market salary on the books, decide the profit dollars the business needs for reserves, equipment and a return on your investment, and divide by revenue. Then price so gross margin covers overhead plus that target.

### What's the difference between net profit and net profit margin?

Net profit is a dollar amount: what's left after every cost. Net profit margin is that amount divided by revenue, shown as a percentage. $162,000 of net profit on $1,800,000 of revenue is a 9% net profit margin.

### Is net profit margin before or after taxes?

It can be either, so always say which. Many small business owners track pre-tax net margin because income taxes depend on entity type and the owner's personal return. Lenders and buyers may ask for both.

### Why is my gross margin good but my net margin bad?

Because overhead is taking most of the gross profit. Compare overhead as a percentage of revenue with your gross margin; net margin is roughly the difference. Fix it by raising prices, getting more billable hours through the same overhead, or trimming overhead that doesn't help you win or do jobs.

### Does owner's pay count against net profit?

It should. Record a market salary for the work you do in the business as an expense, in the field or the office, and treat profit as what's left. Otherwise net margin includes your wages and overstates how profitable the business is.

## Related

- [What Is Gross Margin?](https://www.brix.so/learn/gross-margin)
- [What Is Overhead, and How Do Contractors Calculate It?](https://www.brix.so/learn/overhead)
- [Markup vs. Margin: What's the Difference?](https://www.brix.so/learn/markup-vs-margin)
- [What Is Contribution Margin?](https://www.brix.so/learn/contribution-margin)
- [What Is a Break-Even Point?](https://www.brix.so/learn/break-even-point)
- [What Is Job Costing?](https://www.brix.so/learn/job-costing)
- [How to Read a Profit and Loss Statement (Contractor's Guide)](https://www.brix.so/learn/profit-and-loss-statement)
- [Job Pricing Calculator for Contractors](https://www.brix.so/tools/job-pricing-calculator)
- [How to Price Contracting Jobs for Profit: The Complete Guide](https://www.brix.so/guides/how-to-price-jobs)
- [Bookkeeping for contractors that keeps your books tax-ready all year](https://www.brix.so/features/bookkeeping-taxes)

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Written by BRIX Editorial Team. Last updated 2026-10-12.
Canonical: https://www.brix.so/learn/net-profit-margin