Canada Revenue Agency: 1 TFSA Mistake That Can Cost You Big in 2020

The TFSA is a terrific investment vehicle, but Canada Revenue Agency penalties can bite Canadians hard if they make one vital mistake.

The deadline for most Canadians to file their income tax returns is fast approaching. Earlier this month, I’d discussed why it may be a smart move for citizens to file early rather than stretch out to the last minute. The Tax-Free Savings Account (TFSA) is one of the most dynamic investment vehicles available to Canadians. However, those who are not careful can misuse the TFSA and even punish themselves on their tax returns. Let’s examine how that can happen and how to avoid it.

Watch out for this big TFSA mistake

In late 2019, I’d discussed why it was a bad idea to use this as a basic savings account — that is, to store cash and nothing else. These tend to be examples of lost potential more than anything. The mistake I will focus on today carries a penalty with it.

Canadians need to avoid overcontributions in their TFSA. There are many investors who go over their contribution limit without knowing it. It is important to remember that when you withdraw from a TFSA, that amount will still count against your contribution room. Right now, the cumulative contribution room in a TFSA is $69,500. In this example, let’s imagine that I maxed out my contribution room on January 2, 2020, with a $69,500 deposit into my TFSA. I required cash in early March, so I decided to withdraw $20,000 from that same TFSA.

If I attempted to make another contribution in this calendar year, I would overcontribute to my TFSA. The larger the amount, the more expensive the mistake. The Canada Revenue Agency charges 1% per month for any amount over your TFSA limit. Avoid this by keeping close tabs on your deposits and withdrawals. Better yet, check up on your online CRA account, and it will provide your TFSA information in your profile.

Here are a few ways to make the best out of your account

Overcontributions are a bummer, but failing to take full advantage of the TFSA can be an even bigger tragedy in the long run. Instead, Canadian investors should look to make the most out of this fantastic vehicle. In just the last few months, some of the top growth stocks on the TSX could have provided massive tax-free gains in your account.

Shopify stock fell below the $500 mark back during the brutal March market bloodbath. Since then, the Ottawa-based e-commerce giant has been on a roll. The stock closed at $1,049 on May 19. Its shares have climbed 103% in 2020 so far.

TFSA investors do not have to go all-in on the growth strategy either. There is also the opportunity to rack up nice tax-free income over the long term. TransAlta Renewables is a utility focused on renewable power generation that is a solid source of income. The stock last paid out a monthly dividend of $0.07833 per share. This represents a tasty 6.7% yield.

Fool contributor Ambrose O'Callaghan has no position in any of the stocks mentioned. Tom Gardner owns shares of Shopify. The Motley Fool owns shares of and recommends Shopify and Shopify.

More on Dividend Stocks

Canadian Dollars bills
Dividend Stocks

The TFSA Paycheque Plan: How $10,000 Can Start Paying You in 2026

A TFSA “paycheque” plan can work best when one strong dividend stock is treated as a piece of a diversified…

Read more »

A Canada Pension Plan Statement of Contributions with a 100 dollar banknote and dollar coins.
Dividend Stocks

Retirees, Take Note: A January 2026 Portfolio Built to Top Up CPP and OAS

A January TFSA top-up can make CPP and OAS feel less tight by adding a flexible, tax-free income stream you…

Read more »

senior couple looks at investing statements
Dividend Stocks

The TFSA’s Hidden Fine Print When It Comes to U.S. Investments

There's a 15% foreign withholding tax levied on U.S.-based dividends.

Read more »

young people stare at smartphones
Dividend Stocks

Is BCE Stock Finally a Buy in 2026?

BCE has stabilized, but I think a broad infrastructure focused ETF is a better bet.

Read more »

A plant grows from coins.
Dividend Stocks

Start 2026 Strong: 3 Canadian Dividend Stocks Built for Steady Cash Flow

Dividend stocks can make a beginner’s 2026 plan feel real by mixing income today with businesses that can grow over…

Read more »

senior relaxes in hammock with e-book
Dividend Stocks

2 High-Yield Dividend Stocks for Stress-Free Passive Income

These high-yield Canadian companies are well-positioned to maintain consistent dividend payments across varying economic conditions.

Read more »

Senior uses a laptop computer
Dividend Stocks

Below Average? How a 70-Year-Old Can Change Their RRSP Income Plan in January

January is the perfect time to sanity-check your RRSP at 70, because the “typical” balance is closer to the median…

Read more »

Young adult concentrates on laptop screen
Dividend Stocks

If You’re Nervous About 2026, Buy These 3 Canadian Stocks and Relax

A “relaxing” 2026 trio can come from simple, real-economy businesses where demand is easy to understand and execution drives results.

Read more »