I’m meant to do a capital budgeting analysis on the cost savings of a project and state the NPV and IRR of the project but I don’t understand what they’re asking as their yearly depriciation tax savings differ from year to year and the 5th year was split into 2 half years.How do you calculate the NPV and IRR of such a project?Thank you so much in advance.

the idea is to know the present value of the cost savings, it is doen for a replacement decision so as to know what is the net inflow/outflow from the project,

this is all i could answer from ur question,