Progress Billing Retainage Calculator
Calculate cumulative progress billing, retainage held and the current payment difference.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Apply one retainage rate to all entered eligible earned value, then deduct previous net certificates.
Earned=contract×completion+stored; net cumulative=earned−earned×retainage+release
Worked example
60000 completed value and5000 stored at10% retention give58500 cumulative net before previous certificates.
Assumptions and input details
Stored materials are excluded from completion percentage to avoid double counting. Release cannot exceed accumulated retention. Contract caps, change orders, tax, payment terms and legal entitlement are not inferred.
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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