Milestones or life-altering moments have a way of impacting everything, even things you might not expect. A wedding, a divorce, or retirement can reshape your day-to-day life in ways that may feel joyful, difficult, or bittersweet. Along with the emotional impact, there's a practical reality to consider: each and every one of these milestones can change the way you file your taxes. Knowing what to expect and planning ahead helps you avoid costly mistakes and gives you space to focus on the transition itself.