The country has been ranked at a lowly 143 out of 162 nations in this year's Global Peace Index (GPI).
According to the 2015 GPI published today, escalating civil strife and the consequent refugee crisis have been among the major factors behind the rising cost of global violence containment.
On India, the report said "the economic impact of containing and dealing with the consequences of India's levels of violence was estimated to cost the national economy USD 341.7 billion in 2014. This is equivalent to 4.7 per cent of India's GDP, or USD 273 per person".
Overall, scores of most countries in South Asia slipped, with only Bhutan, Nepal and Bangladesh registering gains. India ranked 5th out of seven countries in South Asia.
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Moreover, in the past eight years since GPI was first introduced, India deteriorated by 6 per cent largely due to "deteriorations in indicators measuring deaths from external conflict, political terror and perceptions of criminality".
Iceland led the pack of the Global Peace Index, followed by Denmark and Austria at second and third positions, respectively.
According to the report, the impact of violence on the global economy reached a whopping USD 14.3 trillion, or 13.4 per cent of global GDP, in 2014.
Globally, many European countries are in the midst of historic levels of peace, with homicide rates falling, military budgets decreasing and withdrawal of forces from Iraq and Afghanistan.
In contrast, countries such as Iraq, Syria, Nigeria, South Sudan and Central African Republic brought up the bottom of the list, turning less peaceful.
Since last year, 81 countries improved their levels of peace while 78 fared worse, the report said.