Over the past few decades, the economics of mental health has drawn more attention, changing from a neglected area to a crucial one for healthcare policy and resource distribution. The economic aspects of mental health, such as resource allocation, intervention cost-effectiveness, and the financial toll that mental health illnesses have on both individuals and societies, are examined in this study. It examines how funding for mental and physical health care differs, emphasising the problems of stigma, geographical imbalances, and a lack of qualified personnel. The research paper assesses the cost-effectiveness of preventive, treatment, and rehabilitation programs using data from international studies. It also looks into how economic assessments, like quality-adjusted life years (QALYs) and cost-benefit analyses, are used to make policy. The study emphasises the value of allocating resources in an equal and evidence-based manner, encouraging openness, accessibility, and effectiveness in the provision of mental health services. This paper seeks to support policy changes that improve the availability and caliber of mental health services globally by addressing economic inefficiencies and arguing for more financing.