There’s a number the Canada Revenue Agency (CRA) keeps track of for every Canadian adult, and a surprising number of people have never looked it up. It’s your TFSA contribution room, the total amount you’re allowed to put into your Tax-Free Savings Account. Get it right, and everything grows tax-free. Get it wrong, and you’ll owe a 1% penalty on the excess, every single month, until you fix it.

The rules are surprisingly simple once you see them laid out. The problem is that TFSAs don’t work the same way as RRSPs, and most people assume they do. That’s where the mistakes come from, and there are a lot of ways to accidentally break the rules. What follows isn’t financial advice, just what I’ve picked up along the way. The CRA updates contribution limits annually and can change the rules, so always verify the latest numbers on their site.

How your room accumulates

Every year since 2009, the federal government has set an annual TFSA dollar limit. If you were 18 or older and a Canadian resident that year, you earned that year’s room. If you turned 18 later, your room started accumulating from the year you became eligible.

Here are the annual limits:

Year(s)	Annual limit
2009–2012	$5,000
2013–2014	$5,500
2015	$10,000
2016–2018	$5,500
2019–2022	$6,000
2023	$6,500
2024	$7,000
2025–2026	$7,000

If you were 18 or older in 2009 and never contributed a dollar, your total available room heading into 2026 is $109,000. That’s a significant amount of tax-sheltered space. It was quietly building for years while a lot of us, myself included, didn’t even know it existed. If you’re wondering whether to prioritize filling that or your RRSP, that’s a whole other conversation.

The withdrawal rule that catches people off guard

This is where people get into trouble. When you take money out of your TFSA, the contribution room comes back, but not until January 1 of the following year.

Let’s say your TFSA is maxed out at $109,000. In March, you withdraw $10,000. You now have $92,000 in the account and might think you have $10,000 of room to re-contribute. You don’t. Not yet. If you put that $10,000 back in before the year is over, the CRA considers it an over-contribution. That triggers a 1% monthly penalty on the excess amount.

The room comes back on January 1. So in this example, you’d need to wait until the new year to re-contribute that $10,000 without penalty.

Transfers between TFSAs

Another common mistake: moving money between TFSA accounts at different banks by withdrawing from one and depositing into another.

If you withdraw $20,000 from Bank A’s TFSA and then contribute $20,000 to Bank B’s TFSA in the same year, you’ve just used $20,000 of contribution room you didn’t have (assuming you were already maxed out). The CRA doesn’t know you were trying to move it. They just see a contribution.

The right way to move TFSA funds is a direct transfer, which your financial institution can arrange. It usually costs a small fee ($50–$150), but it avoids the over-contribution problem entirely.

Investment gains don’t count against your room

Good news: if you contribute $50,000 and your investments grow to $80,000, that extra $30,000 doesn’t eat into your contribution room. Your room is based on what you put in, not what the investments are worth.

This also means that if your investments drop in value, you don’t get extra room. You contributed the money, and that’s what counts.

How to check your room

Log in to your CRA My Account. Under the TFSA section, you’ll see your contribution room, transaction history, and any penalties. The information is typically updated sometime in the first few months of the year, though exact timing varies depending on when your financial institutions report.

One caveat: CRA’s numbers can lag. If your bank hasn’t reported your latest transactions yet, the room shown might not be fully up to date. If you’ve been actively contributing and withdrawing, keep your own records too. When I first started investing, I didn’t even know CRA My Account existed. I was piecing things together from bank statements and hoping the math worked out.

The day-trading warning

The CRA has started flagging TFSA accounts that look like they’re being used for professional trading rather than investing. If you’re making dozens of trades a week and your account has grown to six or seven figures, the CRA may reclassify your activity as business income, which means the profits become taxable.

For most buy-and-hold investors, this isn’t a concern. But it’s worth knowing: the “tax-free” part of the TFSA has limits if you’re running it like a trading desk.

Keep it simple, keep it tracked

The TFSA is one of the best deals in Canadian investing. Tax-free growth, flexible withdrawals, no impact on government benefits. Despite what the name suggests, it’s an investment account, not a savings account. I wish someone had sat me down and explained all of this when I was 18 instead of letting me figure it out one mistake at a time. The rules are straightforward as long as you respect the contribution limits and avoid the withdraw-and-recontribute trap.

TFSA contribution room: how it works