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Debt Is a Tool: The Three Types That Actually Build Wealth

Learn how to build wealth with debt through three strategic methods.

PERSONAL FINANCEMONEY

Garrett Duyck

3/14/20265 min read

white and red wooden house miniature on brown table
white and red wooden house miniature on brown table

Most people hear "debt" and immediately think of the trap. The sinking feeling. The weight.

And look—I get it. Debt can be those things. I've been there. My grandfather's signature advice to me was "Never go into debt."

When I graduated from college, I watched my student loan balance loom over every financial decision I made. It felt like I'd borrowed from my future and now I was paying the price.

But here's what I learned after a decade of using debt strategically: Not all debt is created equal.

Some debt drains your wealth. Other debt builds it.

The difference isn't the debt itself; it's how you use it. Debt is a tool. And like any tool, it can be wielded effectively or abused recklessly. I don't demonize all debt. I categorize it. And once you understand the three productive types of debt, you can stop fearing it and start using it to accelerate your financial growth.

Let me show you exactly how.

Type 1: Skill-Development Debt

What it is: Debt that increases your earning power by improving your skills or credentials.

The most common example is education debt: student loans for college, trade school, certifications, or professional training.

Here's the key: This debt only works if it comes with a plan.

You can't just borrow $50,000 for a degree and hope it pays off. You need to know what career options that degree unlocks, what those jobs pay, and whether the math makes sense.

When I was deciding whether to go to college, I was a first-generation student. My parents couldn't guide me. My peers were heading off to universities, and I didn't even know how to apply or how I'd pay for it.

But I figured it out with the help of a school counselor. And critically, I earned enough academic scholarships to reduce the cost to something I could justify. That changed the equation. The debt I took on was manageable, and the degree opened doors that weren't available to me before.

The formula for skill-development debt is simple: If the debt increases your income potential more than it costs you, it's productive.

A $30,000 loan for a nursing degree that leads to a $75,000 salary? That's productive.

A $100,000 loan for a degree with no clear career path? That's a gamble.

Skill-development debt works when it's strategic. When you have a plan. When you've done the math and you know the investment will pay dividends in the form of higher lifetime earnings.

Type 2: Asset-Ownership Debt

What it is: Debt that allows you to own an asset that holds or grows in value.

This includes mortgages on real estate and, under certain conditions, car loans.

Most people understand mortgages. You borrow money to buy a house, and over time, you build equity as you pay down the loan and the property (hopefully) appreciates.

But here's what often gets missed: In an inflationary economy, asset-ownership debt becomes even more powerful.

When inflation erodes the value of currency, hard assets like real estate tend to preserve their value. Meanwhile, your fixed-rate mortgage payment stays the same. You're essentially paying back the bank with cheaper dollars every year. In this way, the mortgage BECOMES the asset!

Let me give you a personal example.

During the COVID-19 pandemic, car prices skyrocketed. My wife and I owned two cars—both financed with loans. Because we owned those assets (even though we still owed on them), we gained several thousand dollars of value during that period.

If we'd been leasing or constantly buying cash cars at the wrong time, we would have missed that gain entirely.

Here's the thing: Asset-ownership debt locks in your cost while inflation drives prices up around you.

My mortgage payment is fixed. My neighbors who rent? Their costs have climbed 20-30% over the past few years. That's not just about savings; it's about preserving purchasing power.

Now, I'm not saying you should finance everything. But if the debt gives you ownership of an asset that appreciates or generates income, and you're in an inflationary environment, it can be a wealth-building move.

The rule: Asset-ownership debt is productive if it increases your net worth over time.

Type 3: Interest Rate Arbitrage

What it is: Borrowing money at a low interest rate and investing it at a higher rate of return.

This is the type most people have never heard of, but it's one of the most powerful.

Here's how it works: Let's say you have the cash to buy something outright, but you're offered a 0% interest loan. Instead of paying cash, you take the loan and invest that cash in something that earns a return.

You earn on the spread between the two rates.

I've done this multiple times. In fact, I did this with the cars we owned through the pandemic.

I've had several 0% interest rate loans and loans under 3%. I had the cash to pay for those purchases, but instead, I invested that money at fixed rates of 4% or higher. I earned the difference.

Let's say I finance $10,000 at 0% for 24 months. I take that $10,000 I would have spent and invest it at 5% annually. Over two years, I earn roughly $1,000 in interest. Meanwhile, the loan costs me nothing.

That's $1,000 I wouldn't have made if I'd just paid cash.

Now, this strategy requires discipline. You need to:

  • Actually invest the money (not spend it)

  • Choose safe, reliable returns (don't gamble with borrowed money)

  • Ensure you can pay the loan if the investment underperforms

  • Do not overspend on a purchase just because of the interest rate offered

  • Maintain excellent credit scores to get ideal interest rates

But when done correctly, interest rate arbitrage turns debt into a profit center.

The principle is simple: If you can borrow cheaper than you can earn, the debt makes you money.

The Bottom Line: Debt as a Strategic Tool

Debt isn't good or bad. It's a tool.

Productive debt increases your skills, your income, your assets, or your net worth.
Destructive debt finances consumption, depreciating items, or lifestyles you can't sustain.

The three productive types:

  1. Skill-development debt – Invest in education that increases earning power

  2. Asset-ownership debt – Finance assets that appreciate or generate income

  3. Interest rate arbitrage – Borrow cheap, invest at higher returns

The key is intention. Strategic thinking. Doing the math.

I've used all three types to build wealth while keeping my life intact. I didn't sacrifice my family or my sanity. I didn't hustle myself into burnout. I used debt as a tool to accelerate what I was already building.

You can do the same.

If you're ready to rethink how you use money—and debt—I'd love to stay in touch. Join my newsletter, Portfolios and Bedtime Stories, where I share the strategies I use to build wealth without sacrificing the time that matters most.

Your future self will thank you for learning this now.

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