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What are extra delivery hours costing this project?

Compare planned and actual delivery contribution on a fixed-fee project. Use the result to decide where scope, rework or handoff controls need attention.

This is an estimate from your inputs, not an invoice or a prediction. No signup required.

Enter one project

Use one currency consistently. “Actual hours” includes all delivery time; do not enter only the extra hours.

Agreed revenue, excluding taxes and pass-through amounts. Include rework and extra scope once, within this total. Use a consistent labor-cost estimate, not your client billing rate. If owner time is included, the result includes an imputed cost rather than cash expense alone. Include these once. Exclude labor already captured in the hourly cost. The same amount is used in both scenarios.

Illustrative example

5,000 fee · 40 planned hours · 55 actual hours · 60 hourly cost · 400 other costs

Planned contribution
2,200
Actual / forecast contribution
1,300
Planned margin
44.0%
Actual / forecast margin
26.0%
Extra delivery hours
15
Overrun labor cost
900

900 less contribution than planned

Contribution = fee minus modeled delivery labor and other direct costs. It is not net profit; excluded overhead and taxes can change the final result.

Amounts use the currency of your inputs. Entries are not saved on reload or close and are not sent by this calculator to a server.

Turn the number into one control

  1. Classify the extra hours. Separate changed client requirements, preventable rework, missing inputs and underestimated work.
  2. Record the specific failure. Capture an owner, next action, due date and evidence in the free exception log.
  3. Choose a prevention step. For changed scope, document approval before additional work. For rework, add an acceptance check. For missing inputs, confirm readiness before kickoff.
  4. Review the next comparable project. Check whether actual hours moved closer to plan. Do not claim savings until the underlying work changed.

Extra time is not automatically billable. Any additional fee depends on your agreement and client approval.

How the calculation works

Planned contribution = project fee − planned hours × hourly cost − other direct costs.

Actual contribution = project fee − actual hours × hourly cost − other direct costs.

Margin = contribution ÷ project fee × 100. A zero fee has no defined margin percentage.

Overrun cost = max(actual hours − planned hours, 0) × hourly cost. The difference in contribution can also be favorable when actual hours are lower than planned. This model does not separately estimate lost sales or opportunity cost.

Keep recurring issues visible

The $29 Starter workspace combines an Exception Log, KPI Scorecard, Control Register and Weekly Review. It stores data locally in one browser with CSV export. It does not provide time tracking, invoicing or live team sync.

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