Tax-Free Savings Accounts (TFSAs) let your savings and investments grow without tax. But putting in more than you're allowed can get expensive. This guide covers how contribution limits work, what counts as an over-contribution, how to fix one, and how to avoid it.
TFSA over-contribution penalty
A TFSA over-contribution penalty is a tax of 1% per month, charged on the amount you put in above your annual contribution room. The Canada Revenue Agency (CRA) applies it for every calendar month the excess stays in your account.
A TFSA is a government-sponsored investment account that doesn't charge tax on any gains you make from that investment. There are a few restrictions to keep in mind. The main one is the limit on how much you can put in each year.
The amount you can put into a TFSA every year is called the contribution room. Any amount you withdraw gets added to your contribution room for the following calendar year. For 2026, theannual dollar limit is $7,000.
The 1% penalty tax applies only to the over-contribution amount. For example, say by October you'd reached your contribution room, then over-contributed $2,000 for the rest of the year and did nothing to correct it. You'd pay 1% of $2,000 for October, November, and December. That's $2,000 x 0.01 x 3, which means $60 in penalties. Here's a more detailed breakdown.
Note: Registered Retirement Savings Plans give you a buffer of $2,000 for over-contributions, but you get no buffer with TFSAs.
What counts as a TFSA over-contribution
An over-contribution happens when you put more into your TFSA than your contribution room allows. Your room is this year's dollar limit, plus any unused room carried forward, plus the value of prior-year withdrawals, which is added back the following January.
Common causes include:
Re-contributing a withdrawal too soon: money you take out is only added back to your room the following calendar year, not right away.
Contributing to more than one TFSA: the limit is shared across all of your accounts, not applied to each one separately.
Miscalculating your room: relying on an out-of-date figure early in the year, before the CRA has processed your prior-year information.
How you know if you've over-contributed
If you've over-contributed, the CRA will send you an educational letter, which instructs you to remove the excess immediately, if you haven't already done so.
You might also receive a "proposed TFSA return," in which the CRA calculates the amount of tax you're likely to owe. This is based on information provided to the CRA by the TFSA holder's financial institution.
How to fix TFSA over-contributions
So you over-contributed to your TFSA. It's a common mistake. Here's what you can do:
Regularly check your account on the CRA website to keep track of your contribution room. Keep in mind that the My Account tab won't include contributions from the current year. For the most up-to-date overview, call the CRA and ask for your TFSA transaction summary, or contact your TFSA provider.
Once you notice you've definitely over-contributed, act fast. If you've received an educational letter, withdraw the excess immediately by contacting your financial institution and asking them to withdraw it. You'll be charged for each calendar month that the excess is in your TFSA, so even if you've only gone over your contribution room for eight days in October, you'll be charged for the whole month of October.
If you've received a proposed TFSA return — a pre-filled version of form RC243, the TFSA Return — fill it out and send a cheque for the penalty fee. Even if you plan to appeal, you should pay first. If the CRA accepts your appeal, the fee will be reimbursed.
If you think you might have a chance, plead your case. First time this has happened? Did you request a transfer to a new financial institution, but it was classified as a withdrawal instead, causing you to mistakenly believe you had more contribution room than you actually did? Send a detailed letter to the CRA showing that you've taken immediate steps to rectify the over-contribution.
How to avoid over-contributing to a TFSA
The simplest way to stay under the limit is to keep your own running record. A few habits can help:
Track contributions yourself: note the date and amount for every TFSA you hold.
Wait until January to re-contribute withdrawals: withdrawn amounts are only added back to your room the following calendar year.
Leave a small cushion: there's no buffer with a TFSA, so a little breathing room protects you from small errors.
Confirm your room before large deposits: check with the CRA and your financial institution before making a big lump-sum contribution.
Staying on top of your contribution room
Over-contributions are common, and most are straightforward to fix once they're caught. Check your room regularly, follow the TFSA rules, act quickly if you go over, and keep your own records. With a little tracking, a TFSA stays a flexible, tax-free way to grow your savings.
