Core Insights - Retirement planning often encounters unexpected challenges that can financially impact retirees, as highlighted by Charles Schwab [1] - Being prepared for these surprises can help retirees maintain their financial stability during retirement [1] Hidden Housing Costs - Unexpected home repairs, such as needing a new roof or major plumbing work, are the most common financial surprises for retirees [3] - Experts recommend setting aside 1% to 2% of a home's current value annually for maintenance and repairs, and conducting thorough home inspections to identify potential issues [4] Uncovered Healthcare Costs - Healthcare is the largest expense retirees need to consider, with Medicare not covering all costs, including prescription drugs and certain types of care [6] - Retirees should budget between $450 and $850 monthly for healthcare expenses, including insurance premiums and out-of-pocket costs [8] - Options for managing healthcare costs include adding Medicare Part D for prescriptions, private Medigap insurance, or Medicare Advantage plans that offer additional coverage [7][8]