Should You Invest While Paying Off Debt? šøš
- Northern Finance

- Feb 11
- 7 min read

This is probably one of the most stressful questions in personal finance. You've got student loans breathing down your neck, maybe some credit card debt, and everyone on the internet is screaming at you to "START INVESTING NOW! COMPOUND INTEREST! TIME IN THE MARKET!"
But you're sitting there like... shouldn't I get rid of this debt first?
Here's the truth: it depends. I know, I know - you wanted a simple yes or no. But the answer actually changes based on what kind of debt you have and what the interest rate is. Let me break it down so you can make the right call for your situation.
ā ļø Important Disclaimer
I'm not a financial advisor, and this article is for educational purposes only. The information here is based on research and general financial principles, but everyone's situation is different. I'm not responsible for any financial decisions you make based on this content. Always do your own research and consider talking to a licensed financial professional before making major money moves.
š Table of Contents
ā” TL;DR - The Quick Version
In a rush? Here's what you need to know:
High-interest debt (credit cards, payday loans) = pay off first, always
Medium-interest debt (most student loans, car loans) = do both at once
Low-interest debt (mortgage, some student loans under 4%) = invest while paying minimums
Always have a small emergency fund ($500-$1,000) before aggressively paying debt or investing
The math says one thing, but your mental health matters too - if debt stresses you out, prioritize paying it off
Keep reading to figure out exactly what to do with YOUR specific debt situation.
The Interest Rate Rule š¢
Here's the simple math that guides this whole decision:
If your debt interest rate is higher than what you'd earn investing, pay off the debt.
If your debt interest rate is lower than what you'd earn investing, invest instead.
The stock market historically returns about 7-10% per year on average. So:
Credit card at 19.99% interest? Pay that off. You're not beating 20% returns in the market.
Student loan at 3% interest? Invest instead. You'll likely earn more than 3% over time.
Car loan at 6% interest? This is the grey zone - could go either way.
š” Did You Know?Ā When comparing debt interest to investment returns, remember that investment returns aren't guaranteed. A 5% guaranteed "return" from paying off debt is actually better than a risky 7% from investing.
šÆ Quick Reminder:Ā Debt interest is GUARANTEED. You will 100% pay that interest. Investment returns are not guaranteed - some years you'll make 20%, some years you'll lose 10%.
Good Debt vs Bad Debt šš
Not all debt is created equal.

Bad debt (kill it with fire š„):
Credit cards (15-25% interest)
Payday loans (insane interest, sometimes 400%+)
High-interest personal loans
Grey zone debt (situational):
Student loans (varies, usually 3-7% in Canada)
Car loans (usually 4-8%)
Personal lines of credit (prime + 1-3%)
"Good" debt (manageable):
Mortgage (usually 3-6% in Canada currently)
Government student loans (often subsidized, sometimes 0% while in school)
Low-interest lines of credit
š£ļø "But debt is debt! Shouldn't I just pay it all off ASAP?"
ā What to do instead:Ā Think about opportunity cost. If your mortgage is 3% and you can earn 7% investing, you're leaving 4% on the table by paying extra on the mortgage instead of investing.
When to Pay Off Debt First šÆ
Pay off debt aggressively BEFORE investing if:
1. It's high-interest debt (10%+)
Credit cards, payday loans, high-interest personal loans - these are financial emergencies. Every month you carry this debt, you're bleeding money.
A credit card at 20% interest means you need a 20% investment return just to break even. That's nearly impossible to achieve consistently.
2. You have no emergency fund
Before you do anything - debt payoff OR investing - get a starter emergency fund of $500-$1,000. Without this, any surprise expense sends you deeper into debt, and you're stuck in a cycle.
3. The debt is affecting your mental health
Sometimes the math says invest, but the stress of debt is killing you. If you can't sleep at night thinking about your debt, pay it off first. Mental health > optimal math.
š” Did You Know?Ā Paying off a $5,000 credit card at 19.99% interest is mathematically equivalent to earning a guaranteed 19.99% return on a $5,000 investment. Show me an investment that guarantees 20% returns - you can't, because it doesn't exist.
š Real example: You have $10,000 in credit card debt at 20% interest. If you only make minimum payments, you'll pay roughly $15,000+ in interest alone over the years. That's $15,000 that could have been invested and grown to over $60,000 in 30 years.
Kill the high-interest debt first. Always.

When to Invest While Paying Off Debt āļø
Do both at the same time if:
1. Your debt interest is in the 4-8% range
This is the sweet spot where it makes sense to split your extra money between debt payoff and investing.
Strategy:
Pay more than the minimum on your debt (maybe double it)
Invest something each month, even if it's just $50-100
Take advantage of employer RRSP matching if available (free money!)
2. You have employer matching
š£ļø "My employer matches 3% if I contribute 3% to my RRSP, but I have student loans."
ā What to do instead:Ā Contribute enough to get the full match. That's an instant 100% return. You're not beating that by paying off 5% interest student loans. After getting the match, throw extra money at the debt.
3. You're young with decades to invest
Time is your biggest advantage in investing. Missing 10 years of compound growth in your 20s can cost you hundreds of thousands by retirement.
If your debt is low-to-medium interest and you're in your 20s, consider doing both. Make solid debt payments while also putting something in your TFSA.
š” Did You Know?Ā $200/month invested from age 25-35 (just 10 years, $24,000 total) can grow to over $300,000 by age 65. That same $200/month starting at age 35 only grows to about $150,000. Starting early matters.

When to Invest First š
Prioritize investing OVER extra debt payments if:
1. Your debt interest is very low (under 4%)
If you have a mortgage at 3%, government student loans at 2.5%, or any debt under 4% - just make your regular payments and invest the rest.
The market's average 7-10% return beats your 3% debt cost. You're mathematically better off investing.
2. You're missing out on time in the market
Every year you delay investing is a year of compound growth you'll never get back. If you're 35 trying to "just finish paying off debt first," you might be 40 before you start investing. Those 5 years could cost you $100,000+ in future growth.
3. Your employer offers RRSP matching
I'm repeating this because it's important: employer matching is FREE MONEY. It's a guaranteed 50-100% return. Always, always, always get the full match before aggressively paying down low-interest debt.
šÆ Quick Reminder:Ā A 3% mortgage isn't actually costing you 3% - you're getting a tax deduction on that mortgage interest (in some cases), which reduces the effective rate even more.

The Psychological Factor š§
Here's where I get real with you: the math doesn't always win.
The "debt-free scream" approach:
Some people (looking at you, Dave Ramsey fans) say pay off ALL debt before investing anything. Mathematically? Not optimal. But psychologically? For some people, it works better.
If debt makes you anxious, sick, or keeps you up at night - pay it off first, even if the math says invest. You can't put a price on peace of mind.
The balanced approach:
Most people do better with a middle ground:
Pay more than minimums on debt
Invest a smaller amount consistently
Feel like you're winning on both fronts
The "perfect" strategy you never follow is worse than the "good enough" strategy you actually stick to.
š” Did You Know?Ā Studies show that psychological wins (like paying off a small debt completely) motivate people more than pure mathematical optimization. This is why the "debt snowball" method (paying off smallest debts first) works even though the "debt avalanche" (paying off highest interest first) is mathematically better.
Your Actual Game Plan šÆ
Here's a simple framework you can actually use:
Step 1: Get a starter emergency fund ($500-$1,000)
This prevents new debt when emergencies hit.
Step 2: Get employer RRSP match (if available)
Free money beats everything.
Step 3: Pay off high-interest debt (10%+ interest)
Attack this aggressively. Every extra dollar here is a guaranteed double-digit return.
Step 4: Build emergency fund to 3-6 months
Now that high-interest debt is gone, beef up your safety net.
Step 5: Split between medium-interest debt and investing
If your remaining debt is 4-8% interest, do both. Maybe 60% to debt, 40% to investing - adjust based on your comfort level.
Step 6: Max out TFSA while paying minimums on low-interest debt
If all you have left is a 3% mortgage or low-interest student loans, just pay the minimums and invest the rest.
š£ļø "This seems complicated. Can't you just tell me what to do?"
ā” Why it matters:Ā Your debt situation is unique. Someone with $30k in credit card debt needs a different plan than someone with a $300k mortgage at 3%. Use the framework and adjust it to your numbers.
FAQ ā
What if my debt is affecting my credit score?
Pay it down. A better credit score saves you money on future loans and can even affect job prospects. Worth prioritizing.
Should I use my TFSA to pay off debt?
Generally no - you lose that contribution room forever for that year. Exception: if it's very high-interest debt that's crushing you financially.
My parents say to pay off all debt before investing. Are they wrong?
Not wrong, just operating on old advice. When interest rates were 10-15%, that made sense. Today with 3% mortgages? The math has changed.
What about using my RRSP to pay debt through the Home Buyers' Plan?
That's for buying a home, not general debt payoff. Don't raid retirement savings for debt unless it's truly an emergency.
Final Takeaway šŖ
Here's the truth: there's no one-size-fits-all answer to "should I invest while paying off debt?"
The math says:Ā Look at interest rates. Beat high-interest debt first, invest while handling low-interest debt.
The psychology says:Ā Do what lets you sleep at night and what you'll actually stick to.
The wisdom says:Ā Do both when possible. Get employer matches. Build emergency funds. Attack high-interest debt. Invest for your future.
You don't have to choose one or the other forever - your strategy can change as your debt situation improves. Start where you are, make a plan, and adjust as you go.
The worst thing you can do? Nothing. Paralyzed by indecision while both your debt grows AND you miss years of investing.
Pick a strategy, start today, and adjust as needed. You've got this.
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