Markup vs Margin: The Pricing Mistake Costing Contractors Thousands

By Jeff, Jobsite Forms Company · Updated 2026-10-21 · 5 min read

Here's a conversation that happens on a lot of jobs. A contractor says, "I mark everything up 20 percent, so I make 20 percent." It sounds right. It isn't. A 20 percent markup gives you about a 16.7 percent margin. On a $50,000 year of jobs, that gap is real money you thought you had and never did.

This guide explains the difference in plain terms, gives you the two formulas you actually need, and shows how to price a job so you end up with the profit you planned.

The short version

• Markup is how much you add on top of your cost, as a percent of cost.
• Margin is how much of the selling price you keep, as a percent of the price.

Same dollars of profit, two different percentages, because you're dividing by two different numbers. Markup divides by cost. Margin divides by price. Since the price is always bigger than the cost, the margin percent is always smaller than the markup percent.

A simple example

Your cost on a small job is $1,000: labor, material, everything. You add a 20 percent markup:

Markup is $200 ÷ $1,000 cost = 20 percent. Margin is $200 ÷ $1,200 price = 16.7 percent.

Nothing is wrong with that job. The problem starts when you plan your business around a 20 percent margin and price everything with a 20 percent markup. You come up short on every single job, and it's hard to spot because each job looks fine on its own.

The two formulas you actually need

1. Price from a target margin

Want a 20 percent margin on a $1,000 cost? $1,000 ÷ 0.80 = $1,250. Check it: $250 profit ÷ $1,250 = 20 percent. That's the number that matches your plan.

2. Convert between markup and margin

So a 20 percent margin needs a 25 percent markup, and a 25 percent markup gives you a 20 percent margin. Write those two lines on a sticky note and put it where you do your estimates.

Conversion table

Notice how the gap widens as the numbers climb. At 10 percent the difference is small. At 30 percent and up, mixing the two can cost you a big piece of your profit.

Why the gap costs you thousands

Let's say you do $300,000 a year in jobs and you need a 25 percent gross margin to cover overhead and leave some profit. That means you need $75,000 left over after job costs.

If you price with a 25 percent markup instead, your margin is 20 percent. On roughly the same amount of work, you keep about $60,000 instead of $75,000. That's around $15,000 a year that was never in the price. You didn't lose it on a bad job. It just was never there.

That's why the mistake is so sneaky. Nothing breaks. You stay busy, jobs close, customers are happy. You just never seem to get ahead.

Which one should you use?

Use both, for different things:

• Plan in margin. Your overhead, your profit goals and your financial statements all work as a percent of sales. Your accountant thinks in margin. Your profit and loss statement shows margin.
• Price in markup, if that's easier. On the estimate, it's natural to take cost and multiply. That's fine, as long as you use the markup that matches your margin goal. Use the table.

The trouble only comes from using the same percent for both.

Where your target margin comes from

Margin isn't a number you pick because it sounds good. Work backward from your business:

1. Add up a year of overhead: insurance, truck, phone, software, office, your own salary if it isn't already in your job labor cost.
2. Estimate a year of sales.
3. Overhead ÷ sales = the margin you need just to break even.
4. Add the profit you want on top.

If overhead is $60,000 and you expect $300,000 in sales, break-even margin is 20 percent. Add 10 points of profit and your target is 30 percent, which means a markup of about 43 percent on job cost. That number is often higher than people expect, and it's one reason so many contractors feel busy and broke at the same time.

Our hourly rate guide covers the same idea from the labor side.

Markup on materials vs labor

Some contractors mark up materials one way and labor another. That's fine. What matters is that the whole job lands at the margin you need. A few practical points:

• If your labor rate already includes overhead and profit, your material markup can be lower. If it doesn't, the material markup has to carry more.
• Don't forget the cost of handling material: the trip to the supplier, returns, waste, and the time spent ordering.
• Customers sometimes push back on material markup. Pricing the job as a whole, instead of showing every line, avoids most of that argument.

Common mistakes

• Saying "I make 20 percent" when you mean you add 20 percent.
• Copying a markup number from another contractor without knowing their overhead.
• Applying markup to cost that's missing items like permits, dump fees or equipment rental.
• Discounting from a marked-up price without checking what margin is left. Ten percent off a job priced at a 25 percent markup leaves a margin of only about 11 percent.
• Never checking real results. Compare what you estimated to what the job actually cost.

Check your real margin on every job

The estimate is a guess. The real margin shows up when the job is done. Track estimated cost against actual cost on every job, even roughly, and you'll quickly see which kinds of jobs make money and which ones only keep you busy.

Quick recap

• Markup is profit divided by cost. Margin is profit divided by price.
• Price = cost ÷ (1 − margin).
• A 25 percent markup is a 20 percent margin. Keep the table handy.
• Plan in margin, price with the matching markup, and check real results.

Frequently asked questions

Is a 50% markup a 50% margin?

No. A 50 percent markup is about a 33 percent margin. To get a 50 percent margin, you need a 100 percent markup, which means doubling your cost.

What margin should a contractor aim for?

It depends on your overhead and your trade. Work it out from your own numbers using the steps above instead of copying someone else's percent.

Does gross margin include overhead?

Gross margin is what's left after job costs, before overhead. Net margin is what's left after overhead too. Price jobs so gross margin covers overhead and still leaves profit.

General business information, not accounting advice.