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Change Request Cost Calculator

Work out change request cost instantly with clear inputs, formula shown and shareable results.

About Change Request Cost Calculator

Change requests disrupt a planned schedule, so they justify both a margin uplift and an urgency surcharge where they displace other work. Pricing them at the original project rate quietly subsidises scope expansion.

Formula

Change request price

Price = hours × rate × (1 + margin uplift) × (1 + urgency surcharge)

Worked example

With the default values below, Change Request Cost Calculator returns Price To Quote For The Change of $216,315.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Additional Hours Requiredaccepts 1–10,000
90
Blended Hourly Rateminimum 0
1,900
Margin Uplift On Change Workaccepts 0–60 %
10 %
Urgency Surchargeaccepts 0–100 %
15 %

Results

Price To Quote For The Change
$216,315.00
Base Cost At The Blended Rate
$171,000.00
Margin Uplift
$17,100.00
Urgency Surcharge
$28,215.00

Step by step

  1. 1Values used
  2. 2Change request price
  3. 3Price To Quote For The Change= 216,315.00
  4. 4Base Cost At The Blended Rate= 171,000.00
  5. 5Margin Uplift= 17,100.00
  6. 6Urgency Surcharge= 28,215.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.

Frequently Asked Questions

Why charge more than the project rate?

Because unplanned work carries switching cost, replanning effort and displaced revenue from other commitments.

Should small changes be absorbed?

A small goodwill allowance is sensible, but it must be defined in the contract or it becomes an expectation.

Related Calculators

Change Request Cost Calculator | Calcrivo