Finance Ministers are not part of NITI Aayog. 

The NITI Aayog comprises the following:

1) Prime Minister of India as the Chairperson

2) A Governing Council composed of Chief Ministers of all the States and Union territories with Legislatures and lieutenant governors of other Union Territories.

3) Regional Councils composed of Chief Ministers of States and Lt. Governors of Union Territories in the region to address specific issues and contingencies impacting more than one state or a region.

4) Full-time organizational framework composed of a Vice-Chairperson, three full-time members, two part-time members (from leading universities, research organizations and other relevant institutions in an ex-officio capacity), four ex-officio members of the Union Council of Ministers, a Chief Executive Officer (with the rank of Secretary to the Government of India) who looks after administration, and a secretariat.

5) Experts and specialists in various fields