Investing for Beginners: Mistakes That Cost Thousands ššø
- Northern Finance

- Feb 8
- 8 min read

Starting to invest is exciting - you're basically telling your money to go make more money while you sleep. But here's the thing nobody warns you about: it's incredibly easy to mess up in ways that cost you serious cash. We're talking thousands of dollars lost to fees, panic selling, and rookie mistakes that seem totally logical at the time. Let's make sure you're not one of those people.
š Table of Contents
Mistake No.1: Paying Way Too Much in Fees ā¤
Mistake No.2: Trying to Time the Market ā¤
Mistake No.3: Not Using Your TFSA and RRSP ā¤
Mistake No.4: Panic Selling When Things Drop ā¤
Mistake No.5: Putting All Your Eggs in One Basket ā¤
Mistake No.6: Investing Money You Actually Need Soon ā¤
Mistake No.7: Following Hot Tips and Hype ā¤
ā” TL;DR - The Quick Version
In a rush? Here's what you need to know:
High fees can cost you tens of thousands over time - use low-cost index funds or ETFs instead of actively managed mutual funds
Trying to time the market almost always backfires - just invest regularly and stay invested
Use your TFSA and RRSP for tax advantages - it's literally free money from the government
Panic selling when the market drops locks in losses - markets always recover eventually
Diversify across different investments to reduce risk
Only invest money you won't need for at least 5 years
Ignore hot stock tips and social media hype - stick to your strategy
But actually read the whole thing - one of these mistakes alone could cost you a down payment worth of money.
ā ļø Important Disclaimer
We (Northern Finance) are not a financial advisor, and this article is for educational purposes only. The information here is based on research and general investing principles, but everyone's financial situation is different. We are 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 investment decisions.
Mistake No.1: Paying Way Too Much in Fees š°
This is the silent killer of investment returns, and most beginners have no idea it's happening.
Let's say you invest $10,000 and it grows at 7% per year for 30 years. Sounds good, right?
With a 2.5% feeĀ (typical for Canadian mutual funds): You end up with about $43,000
With a 0.2% feeĀ (typical for ETFs): You end up with about $72,000
That's a $29,000 difference just from fees. Same investment, same returns, but the bank took almost $30k from you.
š” Did You Know?Ā The average Canadian mutual fund charges around 2-2.5% in fees (called MER - Management Expense Ratio). Most people have no idea because it's taken automatically from their returns, not billed separately.
What to do instead:
Look for low-cost index funds or ETFs through platforms like:
Questrade
Wealthsimple Trade
TD Direct Investing
CIBC Investor's Edge
Aim for fees under 0.5%, ideally under 0.2%. Your future self will literally be tens of thousands of dollars richer.
šÆ Quick Reminder:Ā A 2% fee doesn't mean you lose 2% of your money - it means you lose 2% of your returns every single year. Over decades, that compounds into massive losses.

Mistake No.2: Trying to Time the Market ā°
š£ļø"I'll just wait until the market drops, then I'll buy in."
š£ļø"Things look shaky, I should sell now and buy back when it's safer."
Congrats, you just thought like 99% of beginner investors. And like 99% of them, you'll probably get it wrong.
š© Here's what actually happens:
You wait for a dip, but the market keeps going up. You finally buy in at a higher price than if you'd just started. Or you sell during a drop, the market recovers while you're on the sidelines, and you miss the rebound. Then you buy back in at a higher price than you sold for.
š The math doesn't lie:
Missing just the 10 best days in the market over a 20-year period can cut your returns in half. And those best days? They usually happen right after the worst days, when everyone's panicking and selling.
ā What to do instead:
Time IN the market beats timing THE market. Set up automatic contributions - same day every month, same amount. This is called dollar-cost averaging, and it means:
You buy more shares when prices are low
You buy fewer shares when prices are high
You remove emotions from the equation
You never have to guess when to invest
Mistake No.3: Not Using Your TFSA and RRSP
This is literally leaving free money on the table. The Canadian government created these accounts to help you invest with major tax advantages, and not using them is like turning down a raise.
TFSA (Tax-Free Savings Account):
Any growth in here is 100% tax-free. You invest $10,000, it grows to $50,000, you take it out - you pay ZERO tax on that $40,000 gain. In a regular account, you'd pay thousands in capital gains tax.
RRSP (Registered Retirement Savings Plan):
Contributions reduce your taxable income NOW (hello, tax refund), and the money grows tax-free until retirement. If you're in a 30% tax bracket and contribute $5,000, you get $1,500 back at tax time.
š” Did You Know?Ā If you're 18 or older, you've been accumulating TFSA contribution room since 2009, even if you never opened one. Check your CRA My Account to see how much room you have - it might be $80,000+.
The costly mistake:
Investing in a regular taxable account when you have unused TFSA or RRSP room. You're paying taxes you don't need to pay.
ā Quick priority guide:
Max out TFSA first (for most young people)
Contribute to RRSP if you're in a higher tax bracket
Only then use a taxable account

credit: openaccessltd
Mistake No.4: Panic Selling When Things Drop š
March 2020. COVID hits. The market drops 30% in a month. Beginners everywhere sold everything, locking in massive losses.
Then what happened? The market recovered within 5 months and hit new highs. Those panic sellers? They missed the entire recovery and lost thousands.
Why this happens:
Watching your $5,000 turn into $3,500 feels awful. Your brain screams "STOP THE BLEEDING!" So you sell. But here's the thing - you haven't actually lost money until you sell. Before that, it's just numbers on a screen going up and down.
The reality:
Every single market crash in history has been followed by a recovery. Every. Single. One. The S&P 500 has survived:
The Great Depression
World War II
Multiple recessions
The 2008 financial crisis
COVID-19
And it's still up massively over the long term.
šÆ Quick Reminder:Ā The stock market is a device for transferring money from the impatient to the patient. When you panic sell, you're the impatient one.
ā What to do instead:
Don't look at your investments during crashes. Seriously. If you can't handle seeing red numbers, delete the app for a few months. Or better yet, see drops as sales - everything you wanted to own is now cheaper.

credit: morningstar
Mistake No.5: Putting All Your Eggs in One Basket š„
š£ļø "I'm just going to buy tech stocks - tech is the future!"
š£ļø "My coworker made $20k on Shopify, I'm going all in!"
This works great until it doesn't. Then it destroys you.
Real example:Ā Someone puts $10,000 into a single tech stock in 2021. It drops 70% by 2022. They now have $3,000 and need years to recover.
What diversification actually means:
Don't just own different stocks - own different TYPES of investments:
Canadian stocks
U.S. stocks
International stocks
Bonds
Different sectors (tech, healthcare, finance, energy, etc.)
š” Did You Know?Ā A simple all-in-one ETF like XGRO or VGRO gives you instant diversification across thousands of companies worldwide. One purchase, complete portfolio.
The easiest solution:
Buy broad index funds or all-in-one ETFs. You get:
Thousands of companies
Multiple countries
Automatic rebalancing
Low fees
Much less exciting than picking individual stocks, but way more likely to actually make you money.
Mistake No.6: Investing Money You Actually Need Soon š
"I'm saving for a down payment in 2 years, so I'll invest it to grow faster!"
Then the market drops 20% right when you need the money. Now your down payment is 20% smaller and you're stuck renting longer or scrambling to save more.
The rule:
Money you need within 5 years should NOT be in the stock market. Period.
Why?Ā Because markets are volatile in the short term. Your investment might be down 30% exactly when you need to pull it out. Over 10-20 years? Markets pretty much always go up. Over 2-3 years? It's a gamble.
š Where to put short-term money:
High-interest savings account (4-5% right now)
GICs (guaranteed returns)
Money market funds
š§ Investment timeline guide:
Need it in 1-5 years: Savings account or GICs
Need it in 5-10 years: Mix of stocks and bonds
Don't need it for 10+ years: Mostly stocks
šÆ Quick Reminder:Ā The stock market is for long-term wealth building, not short-term savings goals.
Mistake No.7: Following Hot Tips and Hype š„
Reddit says buy. Your cousin made $5k. TikTok finance bros are screaming about it. This stock is going TO THE MOON! š
Yeah... this is how you lose money.
Why it doesn't work:
By the time you hear about a "hot stock," everyone else already has too. The price is already inflated. You're buying high, which is literally the opposite of what you want to do.
The meme stock phenomenon:
GameStop, AMC, certain cryptos - people made money, but for every winner there were 10 losers who bought at the peak and lost thousands. The people shouting about their gains never mention when they lose.
š” Did You Know?Ā Studies show that individual investors who trade the most tend to have the worst returns. The best investors? The ones who buy and forget about it.
š© Red flags to avoid:
"This stock is about to explode!"
"Get in before it's too late!"
Anyone guaranteeing returns
Complex schemes you don't fully understand
Investments pushed hard on social media
ā What to do instead:
Have a boring, consistent strategy and stick to it. Buy low-cost index funds regularly. Ignore the noise. You'll beat 90% of active traders over the long run.
FAQ ā
How much money do I need to start investing?
You can start with as little as $100 on platforms like Wealthsimple. Don't wait to have "enough" - time in the market matters more than timing or amount.
Should I pay off debt first or start investing?
Pay off high-interest debt first (credit cards, payday loans). For low-interest debt like student loans, you can do both - invest while making minimum payments.
What if I pick the wrong investments?
That's why you diversify and use index funds. You're not picking - you're buying everything, so even your losers are balanced by winners.
Is now a good time to invest?
The best time was 10 years ago. The second best time is now. Trying to wait for the "perfect time" is timing the market (see Mistake No.2).
How do I know if my fees are too high?
Check your investment's MER (Management Expense Ratio). Above 1%? Too high. Above 2%? Way too high. Under 0.5%? You're good.
Final Takeaway šÆ
Here's the thing about investing mistakes: they're expensive, but they're also completely avoidable.
You don't need to be a genius to invest well. You just need to avoid being stupid. And "stupid" in investing usually means:

Paying unnecessary fees
Trying to be clever
Letting emotions drive decisions
Making it complicated when simple works better
š Your actual game plan:
Open a TFSA with a low-cost platform
Set up automatic monthly contributions
Buy a diversified index fund or ETF
Don't look at it for a year
Repeat for decades
That's it. That's the whole strategy. It's boring, it's simple, and it works.
The investing game isn't won by the people making the flashiest moves. It's won by the people who start early, stay consistent, and don't mess it up with rookie mistakes.
Now you know what those mistakes are. Don't make them. šŖ
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