Calculate the cost indifference point: enter each option’s fixed and variable costs to find the volume where both alternatives have equal total cost.

Assumes constant unit variable costs and comparable fixed costs over the same period.

Selling price (optional)

Cost Indifference Point Formula

The following formula is used to calculate a cost indifference point.

CIP = DFC / DVCU
  • Where CIP is the cost indifference point
  • DFC is the fixed-cost difference, B minus A
  • DVCU is the unit variable-cost difference, A minus B

To calculate the Cost Indifference Point, divide the differential fixed costs by the differential variable costs per unit.

What is a Cost Indifference Point?

Definition:

A cost indifference point is the volume where two alternatives have equal total cost under the model F + V × Q. It is not necessarily a profit break-even point. Equal unit costs give either identical total costs at every volume or no intersection; a negative intersection lies outside nonnegative production.

How to calculate a Cost Indifference Point?

Example Problem:

The following example outlines how to calculate a Cost Indifference Point.

First, determine the differential fixed costs. In this example, the differential fixed costs are calculated to be $10,000.00.

Next, determine the differential variable costs per unit. In this case, the differential variable costs per unit are equal to $500.00.

Finally, calculate the Cost Indifference Point using the formula above:

CIP = DFC / DVCU

CIP = 10,000 /500

CIP = 20 units