Coming out of the Covid-19 pandemic, wills are on the minds of many people. Just among 18- to 34-year-olds, the number of wills increased 63% last year, according to Caring.com, and for the first time, that group is even more likely to have one than 35- to 54-year-olds. “Everyone should have a will, even in the simple form. It avoids confusion and can specify who you want to take care of a pet, for example, if you should die,” says Karen Bussen, founder and chief executive at Farewelling. But what type is needed varies — married couples can file a joint will, a mutual will, or mirror wills, for instance. How do you know which is right? “It really depends on your assets, whether you have children, and a few other factors,” Bussen says.