General Contractors & Remodelers

Contractor Markup vs. Gross Margin & AIA Progress Retainage Calculator

Stop losing profit by confusing markup with margin. Compute exact client bid price, true gross margin percentage, and net progress draw after retainage holdback.

Direct Cost (Labor+Mat) ($)

Markup Percentage (%)

Approved Change Orders ($)

Retainage Held (%)

Base Bid + Change Orders

$41,675.00

Revised Contract Sum

True Gross Margin (%)

25.9% Margin

Gross Profit: $9,975

Retainage Withheld

$4,167.50

Due at final completion

Net Progress Payment Due

$37,507.50

Pair with Lien Waiver

Workbook #4 • 2027 Edition B2B Excel OS

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