Hello Mark,

Not directly, no. Project will calculate the cost of a task based upon work * standard rate for the resource. I suppose you can work around using two rate tables and then copy/paste the different costs into spare cost fields. Then right a formula in yet another spare field to calculate the difference.

However, I would be more inclined to export the data to Excel and do the calculations there.

Please post back if you need more detailed "How-tos" on any part of the process.

Julie