When we started medical school, we were focused on learning medicine: surviving anatomy, passing exams, and eventually becoming good doctors. We didn’t think much about money before medical school, or during it.
We knew medical school was expensive and that we’d have loans to deal with eventually. What we didn’t realize was how much the financial decisions we made (or didn’t make) in those early years would matter later.
Looking back, there are a few basic financial ideas we wish someone had explained to us early on, in plain terms. They would have saved us some unnecessary stress and a few mistakes.
This post is that list: what we wish we’d known about money before starting medical school, in the hope that someone else can skip learning it the hard way.
1. Compound Interest Rewards Starting Early
This might sound boring at first, but stay with us.
Compound interest is the interest you earn on interest. When you invest money and it earns returns, those returns start earning their own returns, and over time that snowball can turn small amounts into something much larger.
It needs time to work, though.
A college student who starts investing at 21 can contribute significantly less money over time and still end up with more than someone who starts at 30. The difference can be tens of thousands of dollars, and it comes from starting earlier, not from smarter investing.
Research shows that even if you only invest for 10 years early in your career and then stop, you can end up with more money at retirement than someone who invests for 30 years but starts later.
When we first learned this, we felt a mix of excitement and regret: excitement because we still had time to use it, and regret that we hadn’t understood it sooner.
Even small amounts matter when you’re young. You don’t need a huge salary to start building wealth, you just need to start.
2. Your Credit Score Matters More Than You Think
We used to think credit scores were something to worry about later, when we wanted to buy a house or a car. They matter much earlier than that.
Credit matters more for medical students than many expect. Federal loans follow fixed rules, but private loans do not, and lenders use your credit to set rates and terms and to decide whether you need a cosigner.
It goes beyond loans, too. Landlords can check your credit before renting you an apartment, car insurance costs more in many states for people with poor credit, and some employers check credit histories before offering jobs or promotions.
Credit can often be improved with a bit of lead time. The trouble is that most people don’t think about it until they need good credit, and by then it’s too late to build it quickly.
Here’s what we wish we’d known:
Start building credit early. The most important step is to open a credit card in your own name as soon as possible, as the primary holder rather than an authorized user. That starts your credit history and the clock on your credit age.
Keep your utilization low. Credit bureaus want to see you using 30% or less of your available limit, even if you pay the card off every month. If you’re consistently above that, ask your card company to raise your limit.
Pay everything on time. Payment history carries the most weight in your credit score, and late payments hurt more than you’d think. Set up autopay if you need to.
We started doing this before medical school, and it took almost no effort. We got a no-fee credit card, used it for small purchases, and paid it off every month. It’s one of the best financial moves we made.
3. Not All Debt Is Created Equal
This one took us a while to understand.
We’re always told “debt is bad,” but that’s too simple. Some debt is manageable, even necessary, while other debt can do real damage to your finances.
Credit card debt that isn’t paid off monthly builds interest quickly. For some people it becomes an impossible mountain, with more financial stress and a lower credit score.
Credit card interest rates are usually somewhere between 15-25%. If you carry a balance, you’re paying up to a quarter of what you owe every year just for the privilege of owing it. That’s the debt to avoid.
Student loans are different. Their interest rates are usually much lower, and for a lot of people they’re a necessary part of getting through medical school. They’re still a burden, but they aren’t the same as high-interest consumer debt.
Pay off credit cards in full every month. If you need to carry debt, make sure it’s low-interest and part of a plan, not spending that got out of hand.
4. A Budget in Medical School Gives You Control
We used to think budgeting meant restricting ourselves and tracking every dollar in a complicated spreadsheet.
It turned out to be the opposite.
You need a budget in medical school and residency, because student loans usually arrive in one annual chunk that has to last the whole year.
When you know where your money is going, you aren’t constantly stressed about whether you can afford something or scrambling at the end of the month wondering where it went.
We didn’t budget properly in our first year, and we felt it. Some months were fine, and then we’d find ourselves uncomfortably close to running out before the next loan disbursement. It was stressful and completely avoidable.
Now we use a simple budgeting app (e.g. Goodbudget) and check it about once a week. It takes five minutes and spares us that awful feeling when an unexpected expense comes up.
The earlier you build the habit, the better. Whether you’re a resident making $60k in an expensive city or an attending suddenly making six figures, budgeting is the difference between worrying about money and being in control of it.
5. The Opportunity Cost of Waiting
Medical training is long.
Most of us won’t see a real paycheque until our late twenties or early thirties. By then, friends from college have been working, saving and investing for years. They’ve built emergency funds, maxed out retirement accounts, and learned about money through trial and error.
We start from scratch, often with significant debt and higher stakes.
Every year you put off learning about money is a year of compound growth you miss, and every month you ignore your credit score is a month you could have been building it.
You don’t need to become a money expert before medical school starts. Learning the basics (compound interest, credit scores, budgeting, and which debts are worth carrying) could save you thousands of dollars and a lot of stress.
What We’d Tell Our Past Selves About Money Before Medical School
If we could give ourselves advice before starting medical school, here’s what we’d say:
Open a credit card now. Use it for small purchases, pay it off every month, and let time build your credit history.
Learn what compound interest means. Even if you can’t invest much yet, understanding it will push you to start as soon as you can.
Track your spending for one month, just once, to see where your money goes. You’ll be surprised, and budgeting will be easier when you need it.
Respect credit cards without being scared of them. They’re tools, not free money. Used well, they build credit and earn rewards. Used badly, they’ll bury you.
Start learning now. You don’t need to master everything overnight: read a blog post, listen to a podcast, or ask someone you trust how they manage their money.
Financial literacy isn’t taught in medical school, or really anywhere. We’d still put it close to clinical reasoning and patient communication in how much it matters.
It’s not that complicated. The basics are straightforward, and small changes early on make a real difference later.
We wish we’d known all this before medical school started. We’re learning now, and sharing it here in the hope that it gives someone else a head start.
There’s already enough to stress about in medical school without money being one of them.