Should Canadian physicians pay off student loans or invest first?

You spent the better part of a decade training to become a physician. During that time, your former classmates who went into other fields were earning full salaries, buying homes, and stacking contributions into their Registered Retirement Savings Plans (RRSPs). Meanwhile, you were accumulating debt — and according to the Association of Faculties of Medicine of Canada (AFMC) 2024 Graduate Questionnaire, 35% of medical graduates report student debt of $120,000 or more. That's a six-figure hole you're staring at right as your income finally starts to climb.

Now that the paycheques are getting larger, the question hits hard: should you throw everything at that debt, or start investing while you still have decades of compounding ahead of you? The cost of getting this wrong isn't abstract — every year you delay investing costs you future growth, and every year you carry unnecessary debt costs you interest and peace of mind. For a physician earning $250,000 and sitting on $150,000 in student debt, the difference between these two paths can be worth tens of thousands of dollars over a career.

Here's the thing: there's no single right answer. But there is a framework that can help make the decisions a lot clearer. Let's walk through it.

Why this decision is especially tough for physicians

Most professionals start earning a real income in their mid-20s. Physicians? You're looking at 8 to 12 years of post-secondary training — undergraduate, medical school, residency, and possibly a fellowship — before you see anything close to your full earning potential. During those years, debt doesn't just sit there. It accumulates.

Then comes the dramatic income jump. You go from a resident salary of $60,000 to upwards of $250,000 or more almost overnight. Suddenly you have real money, real decisions, and a genuine dilemma: should you pay off your student loans or start investing? It's a question almost every Canadian physician wrestles with at this stage.

Your peers who started working a decade earlier already have investment portfolios, home equity, and retirement savings. That gap feels enormous.

Let's not pretend the math is the only thing that matters here. Carrying six figures of debt is emotionally heavy, even when your income can handle the payments. Acknowledging that weight — and treating it as a real input into your decision — isn't weakness. It's practical.

Secure your financial foundation before choosing

Before you decide between accelerating debt payments or investing, you need a few things in place. Think of these as prerequisites, not optional extras.

Emergency fund basics

You should have 3 to 6 months of essential living expenses sitting in an accessible, liquid account. Not invested. Not locked up. Just there (ideally in a high interest chequing or savings account).

This is especially true if you're still in residency. Your income is modest, your hours are punishing, and an unexpected expense — car repair, emergency travel, a medical issue of your own — can derail you fast.

Don't skip this step because you're eager to start investing or crushing debt. An emergency fund prevents you from going deeper into debt when life surprises you.

High-interest debt vs. student loans

Before the pay-off-debt-vs-invest question even applies, you need to deal with any truly expensive debt. We're talking credit cards at 15% to 20%+ or unsecured personal lines of credit at similar rates. That's high-interest debt, and no investment strategy reliably beats it.

Professional lines of credit (LOCs) are a different story. They typically sit at prime or prime minus a small margin. As of early 2025, that means you're looking at roughly 5% to 6%. That's not devastating, but it's real money on a large balance.

The case for paying off student loans first

There are strong arguments for eliminating your student debt before you invest a dollar beyond the basics. Here's the summary:

• Guaranteed return: Every dollar of debt you pay off is like a risk-free return equal to your interest rate - you save what you would have paid in interest.

• Psychological relief: Eliminating six figures of debt feels concrete and freeing.

• Cash flow freedom: No more monthly loan payments means more flexibility.

• Simplified finances: Fewer obligations, less complexity — valuable during a demanding career.

Guaranteed returns with zero risk?

In a way. Paying off debt is the only risk-free "investment" you'll ever make. If your student loan interest is 5.5%, every extra dollar you put toward it earns you a guaranteed 5.5% return in the form of interest you don’t have to pay. No market risk, no volatility, no bad years.

Now consider this through the lens of your tax bracket. As a physician earning $250,000+, you're sitting at a marginal tax rate of roughly 48% to 54%, depending on your province. To match a 5.5% saving on interest with a taxable investment, you'd need to earn significantly more before tax. The after-tax equivalent is compelling — and it's risk-free.

Psychological relief and cash flow freedom

"I wish I had more debt. It makes me feel so good," said no one, ever. (A nod to the Loonie Doctor — a physician-focused personal finance resource worth bookmarking.)

Six figures of student debt is genuinely distressing, regardless of what the spreadsheets say. The psychological burden is real, and there's nothing irrational about wanting it gone. Eliminating your monthly loan payments also frees up significant cash flow. If you're paying $2,000 a month toward your student loan, that's $24,000 a year you can redirect toward investments, a down payment, or living your life once the debt is cleared.

Simplified financial life

During residency or the first years of independent practice, your professional life is already demanding enough. Fewer financial obligations mean fewer things competing for your attention and decision-making energy.

There's something to be said for simplicity — especially when you're working 60-hour weeks and trying to build a practice. Eliminating one major financial obligation clears mental space for everything else.

The case for investing first

The other side of the argument is just as compelling. Here are the core reasons to start investing — even while you're carrying student debt:

• Compound growth: Time in the market matters, and you've already lost years to training.

• Tax-deferred growth: Registered accounts shelter your returns from tax.

• Employer matching: Free money you should never leave on the table.

The power of compound growth over time

Compound growth means your investment returns generate their own returns. It's growth on growth — and the longer your money has to compound, the more dramatic the effect becomes.

Here's the thing physicians need to internalize: you're entering full practice at 30 to 35 years old. That's roughly a decade fewer compounding years than someone who started investing at 22. That's not a reason to panic. But it is a reason to take early investing seriously, even in small amounts.

For example, if you invested $10,000 at age 30 and earned an average annual return of 6% you would have roughly $57,000 by age 60, without making any additional contributions. Wait until 40 to invest that same $10,000, and you're looking at roughly $32,000. That $25,000 difference came from nothing more than 10 years of time.

Tax-deferred growth in registered accounts

Two registered accounts change the debt-vs-invest calculation significantly:

• RRSP (Registered Retirement Savings Plan): Contributions reduce your taxable income. Your investments grow tax-free inside the account, and you pay tax only when you withdraw — ideally in retirement, when your income and tax rate are lower.

• TFSA (Tax-Free Savings Account): Contributions don't reduce your taxable income, but everything inside the account — growth, dividends, capital gains — is completely tax-free. Withdrawals are tax-free too.

The tax shelter matters because it changes the effective return on your investments. A 6% return inside a TFSA is a true 6% return. That same 6% in a taxable account might net you 3% to 4% after tax, depending on the type of income and your marginal rate.

Employer matching you should never leave behind

Some physician practices and organizations offer contribution matching or reimbursements to eligible retirement plans. For example, Doctors of BC's Contributory Professional Retirement Savings Plan (CPRSP) provides an RRSP/TFSA reimbursement benefit to its members.

Skipping employer matching is forfeiting what can be a significant return on your contributions — depending on the match formula. No debt repayment strategy is likely to compete with free money. If your employer matches, it’s a good idea to contribute enough to capture the full match before directing extra money toward debt.

How tax-advantaged accounts change the calculation

Canada's registered account system creates opportunities that shift the math on this decision. Here's how each one works for physicians.

RRSP contributions and the tax refund boost

When you contribute to your RRSP, that amount gets deducted from your taxable income. For a physician with a 48% to 54% marginal tax rate, this can result in a significant reduction in taxes owed.

Here's an example: say you contribute $20,000 to your RRSP. At a 50% marginal rate, your taxable income is reduced dollar for dollar and you save $10,000 in taxes. You can then direct that $10,000 saving toward your student loan principal. This strategy lets you build retirement savings and accelerate debt repayment at the same time.

TFSA flexibility for physicians

Your TFSA contribution room accumulates from the year you turn 18. If you've been in training for a decade and haven't contributed much, you likely have significant unused room — potentially $70,000 or more.

The TFSA's flexibility makes it particularly useful for physicians. You can invest for long-term growth, but you can also withdraw at any time without tax consequences. That makes it a reasonable vehicle for a future down payment or a mid-term goal, not just retirement.

FHSA for physicians planning to buy a home

The First Home Savings Account (FHSA) combines features of the RRSP and the TFSA. Contributions are tax-deductible — like an RRSP — and withdrawals for a qualifying home purchase are completely tax-free — like a TFSA.

The limits: $8,000 per year, $40,000 lifetime. If you don't end up buying a home, you can transfer unused FHSA funds into your RRSP without affecting your RRSP contribution room. For a physician planning to buy in the next few years, the FHSA is worth opening as soon as possible to start accumulating contribution room.

Paying off student loans vs. investing

Here's how the two paths compare.

Calculating your real after-tax cost of debt

Your nominal interest rate doesn't tell the full story. Student loan interest may qualify for a federal tax credit, which reduces the effective cost. However, interest on professional LOCs generally isn't tax-deductible unless the borrowed funds are used for investment purposes.

At a high marginal tax rate, your investments need to earn significantly more than your loan rate to come out ahead after tax. If your LOC charges 5.5% and you're have a 50% marginal tax rate, a taxable investment needs to earn roughly 11% before tax to match the savings on interest you’d get by paying off debt. Inside a TFSA, the math is more favourable because the growth is tax-free.

What investment returns can you realistically expect?

Be cautious about assuming how much your investments will make. Diversified index funds have historically delivered positive real returns over long periods, but short-term volatility can be significant. In any given year, your portfolio could drop 20% or more.

Compare your loan rate to a realistic, risk-adjusted expected return — not the best-case scenario. If your student loan interest is 5.5% and you assume a conservative 5% to 7% long-term return from a diversified portfolio, the expected advantage of investing over paying debt is thin. Factor in risk, and it may not be an advantage at all.

Investing while carrying debt is kind of like borrowing to invest

Here's something worth sitting with: when you choose to invest instead of paying off debt, it’s kind of like borrowing to invest but potentially without the tax benefits. You have cash you could use to eliminate debt. Instead, you're keeping the debt and putting that cash into the market. 

This strategy can perceptually magnify both your gains and your losses. In a good market year, you earn investment returns while paying down your debt costs you relatively little - you’re feeling ok. In a bad year, your portfolio drops and you still owe every dollar of that debt - doesn’t feel great. The downside is asymmetric — you can't "un-lose" the money, but you can't "un-owe" the debt either.

This isn't inherently a bad strategy and it can be balanced by investing in registered accounts and realizing the tax benefits. But it should be a conscious choice, not an accidental one. And emotional preparedness matters. Watching your portfolio drop 15% while you're still carrying $120,000 in student debt feels different than watching it drop when you're debt-free.

The balanced approach most physicians consider

The reality is that most physicians don't go all-in on either strategy. They do both simultaneously — and that's often the most practical path.

Splitting extra cash between debt and investments

After covering your essentials — including emergency fund, minimum debt payments, employer match — you can direct your remaining extra cash toward two goals at once. Some goes to accelerated debt repayment. Some goes into investment accounts.

The split will depend largely on your interest rate. If your student loans carry 0% interest, investing makes overwhelming sense for more of the extra cash. However, if your loan rate is 5.5%, the case for a more aggressive debt repayment plan is stronger. There's no magic percentage split — it depends on your rate, your risk tolerance, and your other goals.

Automating your contributions and payments

Automation can help alleviate decision fatigue — and that's valuable when you're already making hundreds of decisions a day in clinical practice. Set up automatic transfers for both your loan payments and your investment contributions on payday. The money moves before you can second-guess it.

Where home buying goals fit in

If you're planning to buy a home, your down payment competes with both debt repayment and investing for the same pool of cash. This three-way tension is real, and pretending it doesn't exist doesn't help.

Money you'll need for a down payment within 3 to 5 years should stay safe and liquid. Consider choosing lower risk investments — a market downturn right before you need the funds could set your timeline back years. The FHSA and TFSA are appropriate vehicles for this savings goal because they're flexible and tax-advantaged.

You can also use the RRSP Home Buyers' Plan (HBP), which allows a tax-free withdrawal of up to $60,000 from your RRSP toward a qualifying first home purchase. This lets you benefit from the RRSP tax deduction and also access the funds for a down payment — though you'll need to repay the money over 15 years beginning in the 2nd year after the withdrawal.

The key point: buying a home, paying off debt, and investing are all legitimate goals, but they require deliberate prioritization, especially on a new physician's income.

Why your feelings about debt actually matter

Risk tolerance isn't just a checkbox on a questionnaire. It's how you actually feel when markets drop, when debt payments come due, and when you're lying awake at 2 a.m. wondering if you made the right call.

Some physicians sleep better debt-free. The psychological freedom of owing nothing outweighs any theoretical investment gain. Others are energized by watching their portfolio grow, even if debt still exists. Neither response is wrong — they're just different.

As the Loonie Doctor puts it: the right approach "lets you sleep at night and builds your future security." The optimal mathematical strategy means nothing if you can't stick with it for years. The right choice is the one you'll actually follow through on.

Strategies for different stages of training

Your financial priorities should shift as your income and career stage change. Here's how to think about each phase.

During residency

Resident physicians typically earn $55,000 to $80,000 per year. That's a modest income, especially in expensive Canadian cities. Your priorities during residency, in order:

1. Emergency fund: 3 to 6 months of essential expenses.

2. Employer match: If your program offers matching, contribute enough to capture it fully.

3. Minimum loan payments: Stay current on all obligations.

4. Modest TFSA or RRSP contributions: Even $100 to $200 per month builds the habit and takes advantage of compounding.

The goal during residency isn't to perfect every variable. It's to build habits and financial infrastructure — setting up automatic contributions, tracking your spending, and getting comfortable with investing — so you're ready when your income jumps.

First years of independent practice

This is the most dangerous financial period for many physicians. Your income jumps dramatically — sometimes doubling or tripling — and the biggest risk isn't bad investments. It's lifestyle inflation.

Develop your financial plan before your spending habits adjust to your new income. If you go from spending $60,000 a year as a resident to spending $180,000 a year as an attending, you'll have far less available for debt repayment and investing than you think. Automation can help to keep you disciplined when your bank account suddenly looks very different.

If you've incorporated your practice, the complexity increases. A Canadian-Controlled Private Corporation (CCPC) offers tax deferral on retained corporate earnings at lower small business tax rates, but accessing those funds for personal debt repayment triggers personal tax. Incorporation is a powerful tool, but it requires professional guidance to use well.