Retirement is one of the biggest transitions a family will experience, and preparing before a parent leaves work in 2026 can make that change far less stressful. While many people focus on savings alone, retirement planning for families also involves healthcare, legal documents, income timing, and open communication. Taking action before the final paycheck arrives gives everyone more flexibility if unexpected expenses or health issues arise. Rather than making rushed decisions after retirement begins, families can use this checklist to build confidence and avoid common mistakes.