For the purposes of this chapter, the term "project costs" are any expenditures made or estimated to be made, or monetary obligations incurred or estimated to be incurred, by a political subdivision that are listed in a project plan as grants or costs of public works or improvements within a district, plus any incidental costs diminished by any income, special assessments, or other revenues, other than tax increments, received, or reasonably expected to be received, by the political subdivision in connection with the implementation of the plan.
SDCL 11-9-14