What is the main reason for inflation rate?

Answer 1

The rise of inflation index is the net result of a cumulative rise of several commodities and power, fuel prices.

The inflation index depending on where in the world will have a set of assets it is based on. The influence of each asset depends on the discretion of that deciding body.

For instance if say the inflation index is made up of 10 asset or asset classes : and say Oil, Gold, Milk, Fruits, Vegetables. Then a rise in one of them will affect a rise in the index.

Answer 2

Consumers demand goods faster than they can be supplied.