Not all debt is created equal. The distinction between good debt and bad debt isn't just about the interest rate—it's about whether the debt is used to acquire an asset that appreciates over time, generates income, or provides a necessary service at a cost you couldn't otherwise afford. A mortgage on a modestly-priced home in a stable area is generally good debt. Credit card balances from lifestyle consumption are almost always bad debt. The strategy for each is completely different.
Understanding this distinction is essential because the instinct to eliminate all debt as quickly as possible isn't always the wealth-building move it appears to be. Paying off a 3.5% mortgage early when you have a 7% investment return available is actually a net loss—you're giving up the spread. The math favors investing over early mortgage payoff for most people in most interest rate environments.
The Debt Avalanche vs. Debt Snowball
For debts that genuinely should be eliminated—credit cards, high-interest personal loans, car loans—the choice between avalanche and snowball methods is worth understanding. The avalanche method targets the highest-interest debt first, mathematically optimal but sometimes psychologically difficult because progress can feel slow if the high-interest debt is also large. The snowball method targets the smallest balance first, building momentum through quick wins but mathematically inferior.
The Debt Payoff Strategy tool compares both methods so you can make an informed decision based on your specific numbers.
When to Borrow on Purpose
Strategic borrowing exists at the intersection of opportunity and leverage. A 4% mortgage rate is cheap in historical terms, and real estate has historically appreciated at rates that exceed the borrowing cost in many markets. Student loans taken on for a degree that leads to significantly higher earnings are often worthwhile. Business loans that fund genuine cash-flow-positive enterprises are good debt. The common thread: borrowed money that generates a return higher than its cost is a tool, not a burden.