Long-term care is the largest predictable expense most American families never plan for, and the mechanism that pays for it is misunderstood almost universally. This article explains why Medicare does not cover long-term care, what Medicaid actually requires, and how the five-year look-back and the spousal impoverishment rules work in practice. It walks through the difference between countable and exempt resources, the transfer penalty that punishes ordinary generosity, and the estate recovery that arrives after death. It follows two fictional families facing the same nursing home bill with very different amounts of preparation. The practical thesis is that the planning that works must happen before a crisis, and the planning that remains after a crisis is narrower but real.