Investing feels more complicated than it is. When we first started reading about it, we ran into index funds, ETFs, expense ratios, tax-advantaged accounts, and a great deal of confident advice written for Americans. It was hard to know where to start.
The concepts turn out to be simple. Most of the confusion comes from the fact that much of what you read online uses account names that don’t exist in Canada. So here is the version we wish we had found, using the accounts that apply to us.
The Question Before the Question
First, a separate decision: investing and paying down debt are different choices, and for medical students paying down debt often wins.
If the money you would invest was borrowed on a line of credit, you are betting that the market will beat your interest rate, using borrowed money, on a timeline you don’t control. That is a riskier proposition than the one most beginner articles describe. We wrote separately about whether you should invest at all while living on borrowed money, and it is worth reading before this one.
What follows assumes you have some money that is truly yours: savings from before medical school, summer earnings, a gift, or the surplus in a month where the disbursement went further than expected.
The Three Accounts That Matter in Canada
In Canada, the account you hold an investment in changes how it is taxed. There are three worth understanding as a student.
The TFSA. You contribute money you have already paid tax on, it grows tax-free, and withdrawals are tax-free. Contribution room accumulates every year from the year you turn 18, whether or not you have opened one. For someone with a low income now and a very high income later, this is usually the first account to fill, because the tax you avoid is tax you would otherwise pay at a physician’s marginal rate decades from now.
The RRSP. You contribute pre-tax money, it grows tax-deferred, and you pay tax when you withdraw it in retirement. The deduction is worth more the higher your income, which is why RRSPs generally make more sense later, once you are earning as a resident or attending. Contribution room is based on earned income, so as a student with little or no income you won’t have much of it anyway.
The FHSA. A newer account for a first home, combining the RRSP’s deduction with the TFSA’s tax-free withdrawal, provided the money goes toward a qualifying first home. It’s worth knowing about, particularly if buying somewhere in the next fifteen years is plausible for you.
One important caveat for anyone reading this from abroad: these accounts have rules that interact with tax residency, and contributing to a TFSA while you are a non-resident of Canada can trigger penalties. If you are studying overseas, confirm your residency status before contributing to anything.
What to Buy
People expect this part to be complicated, and it isn’t.
An index fund is a fund that holds a broad slice of the market rather than trying to pick winners. An ETF is an index fund that trades on an exchange like a stock. In practice, for someone starting out, they do the same job.
They aren’t exciting. The case for them is that the alternative, picking individual stocks or paying someone to pick them for you, has consistently done worse for most people over long periods, after fees. Fees are what to watch. The difference between a fund charging 0.2% and one charging 2% sounds trivial, but you pay it every year on the entire balance for forty years.
There are now single-fund options in Canada, sometimes called asset allocation ETFs, that hold a diversified global portfolio in one product and rebalance themselves. For someone who wants to make one decision and then not think about it during clinical placements, that is a reasonable answer.
We won’t name specific funds. We aren’t qualified to, and when a blog starts recommending products you should ask what it is being paid.
Why Start Now
The amounts during medical school are small, and they aren’t the reason to start.
The reason is time. We wrote about how compounding works in detail, but in short, money invested in your twenties does far more work than money invested in your thirties, and medicine already pushes your earning years later than almost any other profession. Doctors start late by design, and anything that gets some money working earlier partly offsets that.
Habit is the other reason. Learning how a brokerage account works, what a trade confirmation looks like, and how it feels when the balance drops 15% is much better done with $500 than with $50,000. You learn the same lesson for less.
What Not to Do
A few things we have seen go wrong for people around us.
Don’t invest money you will need within a few years. Elective travel, CaRMS costs and flights home belong in a savings account, not the market.
Don’t invest borrowed money because the interest rate looks low. It is still leverage, and leverage cuts both ways.
Don’t check it daily. It won’t make you money and it will make clinical years worse.
Be sceptical of anything that requires you to act quickly. Most good financial decisions will still be available next week.
Where to Learn More
If you want to go deeper, we wrote up the books that helped us most, with notes on what each one is good for. The Canadian personal finance community online is also much better than the general internet on this topic, and we keep the sources we trust on our Resources page.
The Bottom Line
Investing as a Canadian medical student comes down to a few decisions: work out whether you should be investing at all given your debt, use a TFSA first for money that is truly yours, buy something broad and cheap rather than something clever, and leave it alone.
We are still learning this ourselves and we aren’t financial advisors. When we started, we couldn’t find a version of this that used Canadian accounts and accepted that most of us are living on borrowed money, so this is our attempt at it.
References
- Government of Canada. (2026). Tax-free savings account (TFSA). https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/tfsa.html
- Government of Canada. (2026). Registered retirement savings plan (RRSP). https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/rrsps-related-plans.html
- Government of Canada. (2026). First home savings account (FHSA). https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/first-home-savings-account.html