Markup vs. Margin: The Math That Decides If Your Jobs Make Money
Published by
Throne of Profit EditorialReviewed by
William Hassell
Founder & Chief Editor, Throne of Profit
Ask a remodeler what they make on a job and many will say, "I add twenty percent." They believe that means twenty cents of every dollar is profit. It doesn't — and the gap between those two numbers is where a busy year quietly turns into a thin one. A 20% markup on your costs leaves you with about 16.7% margin, not 20%. On a full schedule of jobs, that missing few points is the difference between paying yourself and scrambling to make payroll.
The confusion is understandable — markup and margin describe the same dollars from two different directions — but it's expensive. Markup is a percentage of your cost; margin is a percentage of your price, and only margin tells you what you actually keep. Price off the wrong one and you undercharge every single job without ever noticing.
$10,000 COST → add 20% markup ($2,000) → $12,000 PRICE
│
markup = 2,000 / 10,000 (cost) = 20% ──────┤
margin = 2,000 / 12,000 (price) = 16.7% ─────┘
same $2,000 — two different denominatorsOwner symptoms
You add a set percentage to every bid but never seem to keep what you expected.
Jobs come in "on budget" yet the bank account stays flat after a full season.
You can quote a markup number instantly but can't say your actual margin on last month's work.
Why this happens
Markup and margin measure the same profit dollars against different bases, so they're easy to blur. Markup divides profit by your cost — the number you start with. Margin divides that same profit by your selling price — the number the customer pays. Because price is always larger than cost, margin is always the smaller percentage. Most remodelers learned to "add a markup" from whoever trained them, carried the habit forward, and never checked what margin it actually produced. The trade teaches you to build; it rarely teaches you to price.
Common mistakes
Treating markup and margin as the same number. Adding 20% and expecting to keep 20% is the core error, and it repeats on every job.
Marking up off cost, then reporting it as profit. A 20% markup is a 16.7% margin — a real gap that compounds across a full schedule.
Building a bid from the bottom up with no margin target. Adding a habitual percentage isn't the same as pricing to hit a number you can live on.
Ignoring overhead entirely. Even a correct margin only covers profit if your overhead is already accounted for in cost — otherwise the margin is paying your bills, not you.
Using one markup for everything. Labor-heavy jobs and material-heavy jobs don't carry the same risk, but a single blanket percentage pretends they do.
Business consequences
The remodeler who prices off markup while thinking in margin undercharges quietly and constantly. It doesn't show up as a lost job — it shows up as a year of full work that somehow didn't pay. A few missing points of margin on a $60,000 kitchen is real money, and it repeats on every job you book. Worse, you can't fix a leak you can't see: if you don't know your true margin, you'll blame slow months or bad luck instead of the pricing math. The owner who prices to a target margin knows what each job must sell for before the bid goes out, and keeps what they planned to keep.
How experienced operators think about it
Seasoned remodelers price backward from the margin they need, not forward from a markup habit. They start with a target — say, "this job must return 35% margin after covering costs" — and calculate the price that produces it. The move is simple: divide your fully-loaded cost by (1 minus your target margin). A $10,000 cost at a 35% target isn't cost plus 35%; it's $10,000 ÷ 0.65 = $15,385. That's a 54% markup to reach a 35% margin. They know markup and margin are just two views of the same dollars, and they let the number they actually keep — margin — drive the price.
Practical actions
Learn the two formulas cold. Markup = profit ÷ cost. Margin = profit ÷ price. Same profit, different denominator — say them out loud until the difference sticks.
Price backward from a margin target. Set the margin you need, then divide fully-loaded cost by (1 − margin) to get the price. Never guess a markup and hope.
Load every cost before you apply margin. Material, labor, subs, and job-specific overhead all belong in "cost" first, or your margin is silently covering them.
Build a quick markup-to-margin reference. A 25% markup is 20% margin; 43% markup is 30% margin; 54% markup is 35% margin. Tape it to the wall you bid from.
Check margin after the job, not just before. Compare the margin you priced to the margin you actually earned, and price the next bid with what you learned.
Questions every owner should ask
Do I know the real margin on my last three completed jobs, or only the markup I added?
Am I pricing to a margin I chose, or adding a percentage out of habit?
Is my overhead inside my cost before I apply margin, or is margin quietly paying for it?
Frequently asked questions
If I want to keep 30% of the price, what markup do I actually add?
Divide your cost by 0.70 to find the price, then the difference is your markup. On a $10,000 cost, that's $10,000 ÷ 0.70 = $14,286 — a markup of about 43%. So a 30% margin requires a 43% markup, not a 30% one. The general rule: markup = margin ÷ (1 − margin). The bigger the margin you want, the wider the gap between the two numbers gets.
Isn't a percentage a percentage — why does the base matter so much?
Because the base is the whole point. Markup measures profit against your cost, which is the smaller number; margin measures it against price, the bigger number. The same $2,000 is 20% of a $10,000 cost but only 16.7% of a $12,000 price. If you price off markup but run your business on margin — which is what actually lands in your account — you'll undercharge every job. Matching the number you keep to the number you price on is the whole fix.
Related articles
Running a Profitable Remodeling and General Contracting Business — the pillar.
Allowances Done Right: Bidding Fixtures and Finishes You Haven't Picked Yet — pricing the unknowns in a bid.
Cost-Plus or Fixed Price? Choosing the Right Contract for Each Remodel — how contract type carries your margin.
What Does a Job Actually Cost You? Real Job Costing — getting cost right before margin.
Am I Charging Enough? How to Know for Sure — the general pricing question.
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