Traditional retirement planning assumptions are based on retiring at 62, drawing down 4% annually, and having 8-10 times your salary saved, but this doesn’t work for the 18% of Americans who want to retire before 55. Early retirement could mean a longer 40-year plan, requiring a larger nest egg and conservative spending. For example, Mia, who wants to retire at 52, would need a 71.2% bigger 401(k) to withdraw 3.5% annually. Savvy investors are adjusting their plans for early retirement, understanding the need for a bigger nest egg and tighter budget to ensure financial stability.

Read more at Yahoo Finance: Smart US retirees know exactly when their 401(k) is big enough to retire early. Are you already there?