When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Share | Related Content Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? Here are three tips. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.