By The Good Debt vs Bad Debt Framework
Not all debt is the same, and treating all debt as the enemy (as some popular financial advice does) misses a fundamental distinction that separates wealth-building debt from wealth-destroying debt.
The practical distinction: debt used to acquire assets that appreciate or generate income tends to build wealth. Debt used to fund consumption that depreciates or produces no return destroys wealth. This is a simplification but it captures something real.
A mortgage that allows you to own a home that appreciates, builds equity, and eventually produces financial stability is structurally different from a credit card balance that funded restaurant meals and shopping. A business loan that funds equipment generating income is structurally different from a personal loan that funded a vacation. The debt instrument itself is similar — an obligation with interest. What the money purchased is completely different.
How High-Net-Worth Individuals Use Debt Strategically
Wealthy people are often substantial borrowers — but they borrow strategically in ways that require understanding to appreciate.
Leveraging appreciating assets. Real estate investors use mortgages to control assets far larger than they could buy with cash alone. A $200,000 down payment on a $1,000,000 property (using mortgage debt for the balance) means they benefit from appreciation on the full $1,000,000 while putting up only $200,000. If the property appreciates 10%, they’ve made $100,000 on a $200,000 investment — a 50% return — using debt to amplify the gain.
The Lombard loan strategy. Ultra-high-net-worth individuals often borrow against their investment portfolios rather than selling investments. This lets them access cash for large purchases (real estate, investments, personal needs) without triggering capital gains taxes on sold investments. The investments continue to appreciate. The interest on the loan is sometimes deductible.
Low-rate debt arbitrage. When mortgage rates or other loan rates are lower than expected investment returns, borrowing at the lower rate to invest at the higher rate produces positive spread. This is why some financially sophisticated people chose not to pay off low-rate mortgages aggressively during the 2010s low-rate era — the math favored investing over accelerated mortgage paydown.
What Regular People Can Apply From These Principles
You don’t need to be wealthy to apply strategic debt thinking. The principles translate to ordinary financial situations.
Use debt to acquire real assets when the numbers work. A mortgage on a home you plan to own long-term is a form of leveraged investment in an appreciating asset. Student loan debt for a degree that meaningfully increases your earning power (with realistic projections, not wishful thinking) follows the same logic.
Never use consumer debt for consumption if you can avoid it. Credit card balances, payday loans, and personal loans for consumption spending are the wealth-destroying category of debt. The interest rates ensure you pay significantly more than the purchase price for things that have already depreciated.
Use 0% financing strategically when available. Genuine 0% financing on a purchase you’d make anyway is essentially using the lender’s money for free for the promotional period. The risk is in forgetting to pay off before the period ends when interest often backdates to the purchase date at punitive rates. If you’re disciplined, 0% financing can be a legitimate tool. If you’re not, it’s a trap.
The Debt That Looks Smart But Isn’t
Some debt is presented as strategic but doesn’t actually meet the criteria.
Car loans are often rationalized as necessary leverage for an appreciating asset. Cars are not appreciating assets — they depreciate from the moment of purchase. A car loan is debt for a depreciating asset, period. It may be necessary (few people can buy a car with cash), but it’s not strategic debt.
Student loans for degrees with poor earnings prospects are frequently rationalized as investment in human capital. The investment framework only works if the return (increased earnings) exceeds the cost (tuition plus interest plus opportunity cost). Many degree and institution combinations fail this test. The investment framing doesn’t automatically make any education debt smart.
Home equity loans for consumption (renovations for aesthetics rather than value, vacations, lifestyle spending) use the strategic vehicle of home equity debt for consumption purposes. The packaging looks strategic; the purpose is not.
Building a Personal Debt Philosophy
The most financially clear-headed people I know have a personal debt philosophy — a clear framework for when they’ll use debt and when they won’t. Not rules handed to them by a financial personality, but principles they’ve thought through based on their own values and situation.
A simple version: I’ll use debt for assets that appreciate or generate income, when the rate is reasonable relative to expected returns. I won’t use debt for consumption or depreciating assets if I can avoid it. For necessary consumption debt (car for work, necessary appliance), I’ll pay it off as quickly as practical.
Having this framework makes individual debt decisions clearer. Rather than deciding case by case whether a particular loan is okay, you’re applying a principle. That principle prevents the rationalization that makes individual bad debt decisions seem reasonable.
