This method is the simplest. Simply take your current income and multiply it by a factor to determine how much you need to retire. Exactly how much you should multiply your income by is a matter of debate. Fidelity recommends that you have eight times your final income.
One may also ask, what should I look for in a retirement plan?
Retirement planning should include determining time horizons, estimating expenses, calculating required after-tax returns, assessing risk tolerance, and doing estate planning. Start planning for retirement as soon as you can to take advantage of the power of compounding.