Retirement can be an endless summer.
If Saturday beach trips and golf games have you dreaming about walking away from your 9-to-5 for good, there's a simple way to calculate how much you need to save to make it happen:
Your desired retirement income ÷ 4% = How much money you need to retire
For example, if your perfect retirement salary is $80,000, divide it by 4% and you get $2,000,000. That's your magic retirement number, and you can call it quits as soon as your account balances hit it - even if you're only 28.
Take a look at the chart below to see how much you need to save to fund retirement income ranging from $40,000 a year to $250,000 a year.
Business Insider/Andy Kiersz
Don't work a day longer than you have to.
Here's why this works: If you have enough saved up, you should be able to withdraw 4% each year to pay for your living expenses in retirement. Using the 4% withdrawal strategy requires earning at least a 5% investment return annually (after taxes and inflation) on your retirement savings.
Keeping all your savings in cash won't do the trick - investing is the real key to make sure you don't run out of money in retirement.