It is not just retiring early; but retiring early with financial independence. This is the most fundamental part of early retirement. When you plan for early retirement, you need to assess your current net worth. Net worth is calculated by adding up all your assets – stocks, retirement corpus, and cash – and deducting all your outstanding debts – credit card debts, loans, and mortgage. Once you know how much money you have, you have to figure how much money you will require when you retire.
There are many factors that determine the corpus for retiring early with financial independence: what my lifestyle would be after I retire, at what age I can retire and what I want to do after retirement.