Markup and Margin Calculator

Formula and inputs

Markup is profit divided by cost; margin is profit divided by price. Converting: margin equals markup divided by one plus markup, and markup equals margin divided by one minus margin. To hit a 30 percent margin you need a 42.9 percent markup; to hit 40 percent margin, a 66.7 percent markup. The calculator reports true margins from your revenue and cost inputs.

Example scenario

Remodel job priced from cost

A contractor estimates $12,000 in materials and direct labor for a bathroom remodel and wants a 35 percent margin to cover overhead and profit. Applying a 35 percent markup would price the job at $16,200; the correct markup for a 35 percent margin is 53.8 percent, pricing it at $18,462.

• -Direct job cost: $12,000
• -Target margin: 35%
• -Required markup: 35 / (100 - 35) = 53.8%
• -Correct price: $18,462 (vs $16,200 mispriced)

The $2,262 gap between the two prices is pure confusion cost, lost on every job priced the wrong way. At $16,200 the actual margin is 25.9 percent, nine points under target, which across twenty jobs a year is the difference between a healthy business and a tired one.

Common mistakes

• -Applying the target margin percentage as a markup percentage, underpricing every job by the conversion gap.
• -Marking up materials but billing labor at cost, blending away the intended profit.
• -Copying a competitor's markup without knowing whether your overhead structure can survive it.

How to interpret the output

• -If job-level margins keep landing under target, audit whether estimates used markup where margin was intended.
• -Overhead recovery belongs in the target margin: a 35 percent gross margin funding 25 percent overhead leaves 10 percent profit.
• -Quote prices, not markups, to customers; markup percentages invite negotiation over the wrong number.

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