The PIMAC conducts preliminary feasibility studies (PFS) on large public investment projects, reassessment of feasibility studies for total project cost management, and contributes to improving the efficiency and soundness of fiscal management through ex ante and ex post feasibility studies on large public investment projects.

In order to implement PPP projects more effectively, the PIMAC provides not only direct services such as feasibility analysis and Value for Money (VfM) tests, proposal evaluation, review of refinancing, negotiation support and review of dispute resolution, but also policy services with the competent authority and private sector such as internal and external education programs, detailed guidelines and policy development studies on PPPs.

The PIMAC was designated as a specialized institution that conducts PFS on a certain scale of investment of public institutions, and also, by conducting objective evaluation of feasibility of public institution investment projects and then allowing access to its results for references before deciding on a new public institution investment, it has contributed to increasing project efficiency and securing financial soundness of public institutions.

Starting in 2015, PIMAC has conducted PFS and in-depth evaluation on projects subject to tax reduction. Tax Expenditure Evaluation is divided into ex ante management through Preliminary Feasibility Study for Special Taxation and ex post management through In-depth Evaluation of Special Taxation.