One of the most challenging parts of planning for retirement is never knowing exactly how much you need to save. It's impossible to predict what emergency costs could arise, and your plans for the future could also shift as you age.

This is why many people fall back on certain retirement "rules" about how much they should save. Here's what one of the most popular retirement savings rules says about how much the average worker should have saved by the age of 50.

Image source: Getty Images.

Continue reading

Source Fool.com