The three modules discussed in previous chapters can now be brought together to consider the net benefits of the project.

$(net benefits) = $R + $B - $C

where R = revenues, B = benefits and C = costs.

Once the basic calculations for these modules have been made, the calculation of net benefits is straightforward.

However, this is not sufficient for a decision. The analysis of risk and uncertainty is one of the most important modules in the business case.