The three debts dentists commonly carry behave differently, and the difference matters more than the balance on each. Student debt is personal, generally unsecured, and may carry program features that disappear if you move it. Practice debt is attached to a business asset that produces income. Real estate debt is secured by an asset that holds value independent of your practice.

So the comparison is never just the rate. It is the rate, the tax treatment, the flexibility, what happens if things go badly, and what each loan actually bought you.

What should you compare besides the rate?

Tax treatment. Interest is not treated identically across personal, business, and real estate borrowing, and the treatment changes the real cost of each dollar you pay. Ask your CPA how each of your loans is treated in your situation, because comparing stated rates without that answer is comparing the wrong figures.

Recourse and security. Business acquisition loans are frequently backed by a personal guarantee, which makes the wall between business and personal debt thinner than it looks on paper. Read what secures each loan. That tells you what is genuinely at risk.

Prepayment terms. Some commercial loans carry penalties or provisions that make early payoff expensive. Find that out before you send extra money.

Program features. Some loan programs carry repayment options tied to income, or relief tied to certain kinds of employment, that may not survive a move to a different lender. Whether yours do, and what specifically you would give up, is a question for the servicer holding the loans and your own advisors.

Does paying down debt beat investing?

This is the real question and it has no universal answer.

Paying down a loan produces a return equal to the interest you avoid, after tax, with certainty. Investing produces an expected return that is uncertain in any given year. Which one suits you depends on the rate, your tax situation, your horizon, and what you would actually do if the investment dropped sharply.

Several things get consistently underweighted:

• A guaranteed return and an expected return are not the same quality of return. Comparing them as though they were is a common error in both directions.
• Any employer match available to you has no equivalent on the debt side.
• Liquidity has value. Money used to prepay is gone. You cannot un-prepay a loan when you need cash.
• Borrowing capacity is itself an asset. Room to borrow on reasonable terms is worth something when an opportunity or an emergency arrives.

How do owners typically sequence it?

One common framework, simple to state and harder to execute:

1. Make every minimum payment reliably, without exception
2. Build cash sufficient to absorb a disruption
3. Capture any employer match available to you
4. Address the highest-rate debt aggressively, wherever it sits
5. From there, weigh remaining paydown against investing based on rate and your own tolerance

The step that gets skipped is the second one. An owner who sends every spare dollar at principal and holds no cash ends up borrowing on worse terms the first time a compressor dies or collections slow. That is not deleveraging. It is refinancing at a higher rate with extra steps.

What about the emotional side?

It exists and it is not irrational. Some owners carry debt comfortably and some lie awake. A strategy you abandon because it makes you anxious is worse than a slightly less efficient one you sustain for a decade.

If one particular loan occupies your thinking, retiring it produces a return that never shows up in a spreadsheet. Just make that choice deliberately rather than by default, and know what it costs you.

This is a framework for thinking, not a recommendation about your loans. Terms and rules change and your particulars decide the answer.

FAQ

Should I refinance my student loans?
It depends on what kind of loans you hold and what features come with them, some of which may not transfer to a new lender. Confirm your loan types and any program eligibility with your servicer before you compare rates, because the rate is not the only thing being traded away.

Is buying real estate a mistake while carrying practice debt?
Not inherently. Real estate debt is secured by a separate asset and converts rent into equity. The question is whether combined debt service stays comfortably covered by practice cash flow through a slow stretch, and whether reserves could carry both obligations at once.

Does paying off practice debt raise what my practice is worth?
Not directly. Value generally rests on earnings, and debt is settled at closing out of proceeds rather than priced into the multiple. Paying it down raises your net proceeds and improves monthly cash flow, but the underlying business value does not move.