Good Debt vs. Bad Debt: Not All Borrowing Is Equal
A few weeks ago we talked about the 10% line, and last week about picking your payoff method and actually sticking to it. If you’ve been doing that work, good — you’re climbing. But I want to slow down for a second, because there’s a piece of debt talk that gets oversimplified almost everywhere else you’ll read about it.
You’ll hear a lot of finance voices tell you all debt is bad. Pay it all off, avoid it forever, never touch it again. I understand the appeal of that message — it’s simple, and simple sells. But it’s not true, and treating it as true can actually cost you money and opportunity. In fact, a lot of the wealth-building you see around you — the rental property down the street, the small business that grew into something real — was built using debt as a tool, not avoided because of it.
The real question isn’t “debt: yes or no.” It’s good debt vs. bad debt — understanding what each dollar you owe is actually doing for you.
What Makes Debt “Bad”
Bad debt has three things in common: it’s used to buy something that loses value, it usually carries a high interest rate, and it doesn’t build anything that pays you back over time.
Credit card debt on things you’ve already consumed — vacations, restaurants, clothes you’ve since donated — is the clearest example. So are most personal loans taken out to cover a shortfall rather than an investment. The car itself isn’t inherently bad debt, but a car loan on a vehicle that’s depreciating fast, at a rate that eats into your monthly cash flow, edges toward bad territory the more it strains your budget.
The test I’d give any client: is this debt working for you, or are you just working to pay for it?
What Makes Debt “Good”
Good debt has the opposite profile: it’s usually lower interest, and it’s attached to something that either grows in value or grows your income over time.
A mortgage on a home you can comfortably afford is the classic example — you’re borrowing at a fixed rate to hold an asset that’s historically appreciated, and every payment builds equity that’s yours. Certain education debt fits here too, when it leads to a real increase in earning power, though this one deserves a careful eye since not all degrees pay off equally. Business debt used to grow a company that’s already generating revenue is another example — you’re borrowing against future income you’re confident will materialize.
The common thread: good debt is a tool you picked up on purpose, not a hole you fell into.
The Line Isn’t Always Where You Think
Here’s where I’ll push back on the “good debt” label a little, because it’s not a free pass. A 3% mortgage payment that’s still eating 45% of your take-home pay is straining your climb even if the interest rate looks great on paper. Good debt can still be too much debt. The category tells you how the debt is structured — it doesn’t tell you whether you can afford it.
So the real framework is two questions, not one:
- Is this debt attached to something that grows in value or income? (Good debt vs. bad debt)
- Is the payment sized so it doesn’t choke my monthly cash flow? (Affordable vs. not, regardless of category)
A debt needs a yes on both to actually be helping you climb.
What This Means for Your Next Move
If you’re carrying a mix — which most people are — here’s the order I’d want you thinking in:
First, attack anything that fails both questions: high rate, depreciating purchase, straining your budget. That’s your credit card balance, most likely. This is exactly what the avalanche and snowball methods from a couple weeks back are built forif you haven’t run your numbers yet, the debt payoff calculator will lay out your fastest path.
Second, leave good debt alone if it’s affordable. Don’t rush to pay off a 4% mortgage early at the expense of your emergency fund or retirement contributions. That instinct feels responsible, but it’s often not the highest-value move you can make with that money.
Third, if a “good” debt is straining your cash flow anyway, treat it like a budget problem, not a debt problem. That might mean a smaller car next time, not panic-paying down the loan you already have.
This Week’s Climb
You don’t need to restructure anything today. You just need clarity on what you’re actually carrying.
- List your debts again — you may already have this from the payoff plan work.
- Label each one: good, bad, or “good but straining my budget.”
- Circle the bad debt. That’s still your priority for extra payments.
- For anything labeled “good but straining,” ask honestly if the real fix is the debt or the monthly budget around it.
- Leave the truly good, truly affordable debt alone. Let it keep doing its job quietly in the background.
Not all debt is a mountain you need to tear down. Some of it is part of the trail. Knowing the difference is what lets you climb with a clear head instead of blanket fear.
See you at the top.
This article is for educational purposes only and does not constitute personalized financial advice. Please consult a licensed financial professional regarding your specific situation.