A handwritten will is called a holographic will, and it is legal even if there are no witnesses. These wills lead to some of the most complicated and difficult situations in probate courts and often result in years longs processes that cost tens of thousands of dollars to resolve. This simple reason is that most people who handwrite a will don’t know the legal terms that need to be used to make going through probate simple, and this often leads to major mistakes that require intense supervision by a probate judge.