[7] He completed his MPhil from Nagpur University and in 1993, became the Vice President of the Bhartiya Janata Yuva Morcha (BJYM) in Maharashtra.

In 1995, he won the Legislative Assembly elections from Chandrapur with a record margin of around 55,000 votes[8] and eventually became the Minister of Tourism and Consumer Protection in the 'BJP-Shiv Sena' alliance's Maharashtra government, a position he held till 1999.

[9] He continued to rise in the ranks of the Bhartiya Janata Party, becoming the General Secretary of BJP's Maharashtra State unit in 1996 and the National Vice President of Bharatiya Janta Yuva Morcha in 2001.

[10] In 2014, after the Maharashtra Assembly elections, Mungantiwar became the Minister of Finance & Planning and Forests in the Devendra Fadnavis ministry.

As the Minister of Finance & Planning departments, Sudhir Mungantiwar played an integral role in chalking out the 'Shetkari Sanmaan Yojna' - Maharashtra state government's decision to waive around 34,000 crore worth of farmers' loans.

[14] He also formed committees to recommend measures to improve efficiency and transparency in the areas of governmental procurement, school and college fee structures, and disbursement of scholarships.

[15] As the Minister of Forests, he initiated a massive state-wide plantation drive which aimed at planting 50 crore saplings by 2019.

[20][21] Over his career in public service, Sudhir Mungantiwar has been awarded many times recognizing his political performance and social initiatives.