How much can you spend in retirement? Naturally, this is a very important question for those approaching their retirement date. Essentially, if you wish to retire one day, you are increasingly responsible for figuring out how to save during your working years and convert your savings into sustainable income for an ever-lengthening number of retirement years. It is not an easy task, but it is manageable. This guide focuses on sustainable spending from investments, which is an important piece of any retirement plan. People want to know if they have saved enough to be able to fund their lifestyle in retirement. In this book, I explain the findings of a large body of financial planning research regarding sustainable spending from investment portfolios in the face of a variety of retirement risks.