Fundamentals: Good vs. Bad Debt

Happy New Year, lovely.

Wishing you ease, clarity, and moments of peace as you step into what’s next.

As the year begins, it’s natural to think about time and moving forward. Today’s topic is debt — a practical one, and an important one — because it can either limit what’s possible or help bridge the gap between where you are and what you’re building.

What Is It?

Good debt and bad debt are not moral labels — they describe how debt affects your financial position.

Good debt increases net worth or future income and fits within your cash flow.

Bad debt does not increase net worth or income and reduces cash flow through interest and payments.

Cash flow is your income minus your expenses — the money you have left after bills are paid.

Why It Matters

Debt directly affects how much control you have over your money.

Debt that increases the value of an asset or your income can support long-term financial growth and lead to wealth.

Debt that reduces cash flow without increasing the value of an asset or your income can be burdensome and crippling to your finances.

Understanding the difference helps you use debt to your advantage.

In practice, this is how many business owners approach borrowing. They use debt intentionally to fund assets, operations, or opportunities that are expected to generate more income than the cost of the loan. When the return exceeds the interest and the payments fit within cash flow, debt becomes a tool for growth rather than a financial burden.

How Do You Apply It?

When evaluating any debt, ask three questions:

Does this increase value or income?

Will it appreciate over time, or will it reliably increase earnings?

Is the interest rate reasonable?

Higher interest means more of your income goes toward the loan instead of your goals.

Does the payment fit within your cash flow?

If the payment limits saving, investing, or other obligations, the debt works against you.

If the answer to any of these is no, reconsider.

Real-World Examples

Mortgages

A mortgage can be productive debt when the payment fits your income and the property has the potential to appreciate.

For example, a rental property with a $400,000 mortgage that grows in value to $600,000 increases net worth.

If rental income is $3,500 per month and the mortgage payment is about $2,600, the property also produces cash flow before expenses.

Student Loans

Student loans may be productive if they lead to higher income.

The return on investment should reasonably exceed the total cost of the loan over time.

If income is not expected to rise enough to justify the debt, the loan can become a long-term cash flow obligation with little or no financial return on investment.

Consumer Debt

High-interest credit cards, buy-now-pay-later plans, and expensive car loans typically reduce cash flow without increasing value or income.

These forms of debt often make financial progress harder by increasing costs and limiting flexibility. In some cases, these products are structured in ways that benefit lenders more than borrowers, particularly when high interest, fees, or long repayment terms are involved.

Next Step

Start by taking account of your debt.

For each obligation, note the required monthly payment, the interest rate, and whether the debt contributes to increasing income or the value of an asset enough to justify keeping it.

Add up your total monthly debt payments, then divide that number by your gross monthly income to see what percentage of your income is going toward debt.

A commonly used guideline in lending and underwriting is that total monthly debt payments should generally stay below about 36% of gross income. This benchmark exists because higher debt levels increase the risk that borrowers will struggle to make payments, which raises default risk for lenders.

If your debt load exceeds that range — or if cash flow feels tight because of debt — evaluate each obligation using the questions above.

If a debt does not increase the value of an asset you own, improve your earning potential, or generate income, carries a high interest rate, or limits your ability to save, invest, or meet other priorities, it is likely working against you.

If that’s the case, focus on paying down the debt that places the greatest pressure on your cash flow. As those payments are reduced or eliminated, the freed-up cash flow can create more ease, be applied toward eliminating other debt, or be redirected toward investing.

Here’s to clarity, control, and a very prosperous New Year.

Related Money Dearest Foundations

→ Cash Flow

→ Debt Management

→ Budgeting

Sources

Consumer Financial Protection Bureau (cfpb.gov) – credit cards, interest, and debt costs

Federal Reserve Bank – interest rates and household debt trends

Investopedia – definitions of cash flow, equity, and return on investment

Disclaimer: This content is for educational and informational purposes only and is not intended as financial, legal, or tax advice. Individual circumstances vary, and you should consult a qualified professional regarding your specific situation before making financial decisions.