Inflation is like a tax on Income as it reduces the real value of Income. Given the huge number of people who are just above the poverty line in India, a high rate of inflation means pushing them back to poverty (not to mention the condition of those who are below the poverty line). Thus it is of utmost priority that we control Inflation. However controlling Inflation requires a proper understanding of the factors behind it. This would not only help in reducing inflation but will also help the country to grow at a faster rate. This study also summarizes the steps for forecasting India’s inflation using Box-Jenkins autoregressive integrated moving average (ARIMA) time series model, for forecasting one step ahead Wholesale price index of India.