Markup is what you add to your cost. Margin is what you keep out of your price. They are different numbers, and confusing them is the most expensive arithmetic mistake in the trades.
The example that shows it
A part costs you $100. You mark it up 50% and charge $150.
Your markup is 50%. Your margin is 33% — you kept $50 out of a $150 price.
That gap widens as the numbers grow. A 100% markup is a 50% margin. A 25% markup is a 20% margin.
Why it costs real money
An owner who wants a 40% margin and applies a 40% markup ends up with about a 29% margin. On a business doing half a million a year, that difference is not a rounding error — and because every job is priced consistently wrong, nothing looks obviously broken. The jobs come in, the work goes out, and the profit is quietly eleven points lower than intended.
Getting it right
Decide the margin you need first, then work backwards to the price. To hit a target margin, divide your cost by one minus that margin: for a 40% margin on a $100 part, $100 ÷ 0.60 = $167.
Omnyra reports margin rather than markup, because margin is the number that tells you whether the business works.