Marawood Construction Accounting
Financial Planning Tool

Line of Credit Sizing Calculator

The simple math your banker rarely walks you through — size your line to your cash conversion cycle, not your fear of asking.

Business Inputs

Annual Revenue$10M
Gross Margin ? Revenue minus direct project costs (labour, materials, subs), expressed as a percentage. The remaining portion funds your operating expenses — the basis for sizing your line. 30%
Cash Conversion Cycle ? The number of days it takes to turn project costs — labour, materials, subs — into cash collected from client payments. The longer this cycle, the larger your line needs to be. 90 days

Current Line of Credit

$

Construction Industry Notes

  • GCs typically run 8–15% gross margin; specialty trades 25–40%
  • Retainage (5–10%) extends your effective exposure further
  • Lead with this math when requesting a larger line — show the cycle, not just the number

Key Numbers

The Math

Gap Analysis