3 Common TFSA Mistakes Canadian Immigrants Must Avoid

For a while after opening a TFSA and putting money in, I thought that was the end of it.

Part 1 covered checking your limit; Part 2 covered buying QQQX. Set up an automatic transfer and the rest takes care of itself, right? But the more I looked into TFSAs, the more unexpected rules surfaced. The same questions kept coming up in community forums — the kind where you think, “I would have made that mistake too.”

The problem is that nobody tells you these rules. Not when you open the account, not in the Wealthsimple app. Mistakes accumulate quietly, and the CRA letter arrives later.

First — What Is Your 2026 Limit?

Before the mistakes, establish the baseline.

2026 annual limit: $7,000 (unchanged for a third straight year)
Maximum cumulative room: $109,000 (born 1991 or earlier, never contributed since 2009)

Cumulative TFSA contribution room from the program’s 2009 launch through 2026. Each year’s annual limit is added on.

The annual limit only moves in $500 increments. It rises when accumulated inflation crosses the next threshold, so staying flat for several years is normal.

The important part is that room accrues automatically. If you are a Canadian resident aged 18 or over, room builds whether or not you have an account. For immigrants, room starts from the year you became a resident. If you landed in 2018, your room accumulates from 2018 — not 2009.

Your exact limit has to come from CRA My Account. And you should not fully trust the number shown in your app — more on why below.

Mistake 1 — Withdrawing and Re-contributing in the Same Year

One of the TFSA’s big advantages is that withdrawals restore your room. That is true. But there is a critical condition: the room comes back on January 1 of the following year.

Withdraw and re-contribute in the same year and the CRA treats it as an over-contribution.

Date	Action	Result
January 2026	$7,000 room available
March 2026	Contribute $7,000	Room exhausted
June 2026	Withdraw $5,000	Room not yet restored
July 2026	Re-contribute $5,000	$5,000 over-contribution

The horizontal axis is months (January, March, June, July); the vertical axis is remaining room. Room goes negative at the July re-contribution.

Most people assume the withdrawal frees up room immediately. That $5,000 does not return until January 1, 2027. Put it back in July 2026 and it is over-contributed.

What makes this dangerous is that nothing warns you. Wealthsimple will not block it. The penalty arrives by mail after year end.

There is an exception: when you still have unused room for the year.

Date	Action	Result
January 2026	$7,000 room available
March 2026	Contribute $3,000	$4,000 room left
June 2026	Withdraw $3,000	Still $4,000 room
July 2026	Contribute $4,000	No problem

So re-contributing is not forbidden — it is only allowed within your remaining room for the year. The test is simple: ignore the withdrawal and look only at your remaining room.

What Over-Contributing Costs

The penalty is 1% per month on the excess. That is 12% a year.

The horizontal axis is months. Leaving a $5,000 over-contribution in place lets the penalty accumulate.

Leave $5,000 over-contributed for a year and it costs $600. Not trivial.

Two things to know about the calculation:

It is monthly, and any part of a month counts as a full month. Contribute July 31 and withdraw August 1 and you still owe at least one month.
It uses the highest excess in that month. Partially withdrawing mid-month does not reduce that month’s charge.

If you find one, the response is straightforward: withdraw the excess immediately. Every day earlier stops the next month’s charge sooner.

You will also need to file form RC243 (TFSA Return) by June 30 of the following year. If it was a first-time, unintentional error, you can request penalty relief using form RC4288 (taxpayer relief). Relief is genuinely granted in some cases — explain the circumstances and include proof you already withdrew the excess.

Mistake 2 — Trusting the CRA’s Displayed Limit

This is the most common cause of over-contribution.

The TFSA room shown in CRA My Account is not real time. Financial institutions typically report contributions and withdrawals to the CRA once a year, early in the following year. The number on your screen most likely reflects December 31 of last year.

Imagine you have already put in $5,000 this year but the CRA screen has not caught up. Trust that number, add $7,000, and you are over.

Use the CRA figure as a starting point and track your own deposits and withdrawals for the current year. This matters even more with multiple accounts. If you hold a Wealthsimple TFSA and a bank TFSA, each app shows only its own. Combining them is your job.

A simple spreadsheet is enough. Date, account, in/out, amount. That alone prevents most errors.

Mistake 3 — Holding US Dividend Payers Inside a TFSA

If you bought US assets like QQQX in Part 2, you need to know this.

A TFSA is tax-free under Canadian law, but the IRS does not recognize it as a retirement account. Dividends from US stocks and ETFs held in a TFSA are subject to 15% US withholding tax — and you cannot recover it. Claiming a foreign tax credit on your Canadian return does not work, because a TFSA generates no Canadian tax to credit against.

By contrast, an RRSP is exempt from that withholding on US-listed ETFs under the Canada–US tax treaty.

That leads to a rough placement guide:

Asset	Better account	Why
US-listed ETFs (dividend paying)	RRSP	Exempt from 15% US withholding
Canadian stocks and ETFs	TFSA	Dividends and gains fully tax-free
Growth stocks (little dividend)	TFSA	Large capital gains benefit most
Interest products (HISA, GIC)	TFSA	Interest is fully taxable otherwise

This does not make holding QQQX in a TFSA automatically wrong. For a low-yield growth product, the 15% drag is small and the tax-free capital gain may matter more. Just make the choice knowing the cost exists.

Mistake 4 — Withdrawing an Asset That Is Down

There is an asymmetry worth understanding. Gains increase your future room; losses reduce it.

Contribute $7,000, watch it fall to $4,000, then withdraw everything, and the room restored next year is $4,000, not $7,000. You permanently lose $3,000 of room.

The reverse also holds: if $7,000 grows to $12,000 and you withdraw, you get $12,000 of room next year. Which is why it makes sense to hold higher-growth assets in a TFSA and avoid pulling out positions that are down.

This is where TFSAs differ from RRSPs. RRSP withdrawals destroy room permanently; TFSA withdrawals restore it. The catch is that “it” is measured at market value.

Mistake 5 — Not Handling Your TFSA Before Leaving Canada

For anyone planning to return to their home country, this can be costly.

Once you become a non-resident, no new room accrues. Room from your resident years stays, but nothing is added for the years you are away.

More importantly: contributing to a TFSA while a non-resident triggers a separate 1% monthly tax. Same rate as the over-contribution penalty, but this applies even if you have room available. People get caught by leaving an automatic transfer running after they depart.

Pre-departure checklist

Cancel any pre-authorized contributions. This is priority one.
You can keep the account. Holding is fine; contributing is the problem.
Withdrawals are allowed and are not taxed by Canada.
However, your home country may not recognize the TFSA as tax-exempt. It may be reportable as a foreign financial account, and gains may be taxable there.
Establish your departure date clearly and consult an accountant if you can.

If you later return and become a resident again, room starts accruing from that point.

What to Do If You Find a Mistake

If something above made you pause, here is the order.

Withdraw the excess immediately. That month’s penalty is already fixed, but you stop the next one.
Reconstruct this year’s deposits and withdrawals across every TFSA. You need the exact excess amount.
Check your official limit at the CRA, keeping the reporting lag in mind.
File RC243 (TFSA Return) by June 30 of the following year.
If it was unintentional, request relief with RC4288, attaching proof the excess was withdrawn.
Going forward, keep your own records.

Sorting it out and filing before the CRA writes to you substantially improves your odds of relief.

Frequently Asked Questions

Q. Can I have multiple TFSAs? Yes, with no limit on the number. But the contribution room is per person, not per account. More accounts make tracking harder and over-contribution more likely.

Q. Can I give my spouse money for their TFSA? Yes. Unlike an RRSP, attribution rules do not apply to TFSAs, so income earned on money you gave your spouse is not attributed back to you. It is an effective way to expand household tax-free space.

Q. Can I day trade inside a TFSA? Not advisable. If the CRA determines the activity constitutes business income, it can tax the entire TFSA. There are real cases of this happening to accounts with large trading gains. Use it for longer-term holdings.

Q. Can I claim TFSA losses on my tax return? No. Because it is a tax-free account, losses are not deductible either. Assets where you might want to harvest capital losses may belong in a non-registered account.

Q. What happens to a TFSA on death? Naming your spouse as successor holder transfers the account to their TFSA with tax-free status intact. Naming them only as beneficiary means income earned after death becomes taxable. Check this designation when you open the account.

Summary

The TFSA is the best account available in Canada, but several of its rules run against intuition. To recap:

Re-contribution room returns January 1. Within the year, only your remaining room counts
The CRA figure lags. Track your own numbers
US dividends work better in an RRSP than a TFSA
Withdrawing a position that is down destroys room along with it
Cancel automatic contributions before leaving Canada

The over-contribution penalty is 1% monthly, 12% annually. But every one of these is a mistake you avoid simply by knowing about it. Log into CRA My Account today, check your limit, and put this year’s transactions in a spreadsheet. Ten minutes.

3 Common TFSA Mistakes: Over-Contribution, Re-Contribution Timing, and What to Do When You Leave Canada