How Much House Should You Really Buy? Rethinking the 2×, 3×, and 4× Income Rules

The traditional 2×, 3×, and 4× income rules are incomplete in today's market. What matters more than the income multiple is your income structure, volatility, and trajectory. Two times income provides extraordinary flexibility and resilience. Three times income remains the most broadly sustainable benchmark. Four times income is acceptable only when income is clearly on an upward trajectory. Beyond four times income, you're making a bet on the future. The most reliable test: could your household continue paying the mortgage comfortably on one income, at today's interest rates, for an extended period without panic?