FHSA unused contribution room: you get one year to catch up, then it's gone

Your FHSA contribution room doesn't roll over indefinitely like your TFSA does. You get exactly one year to use unused room - after that, it's gone for good.

Here's how it works: if you don't contribute your full $8,000 in 2024, you can carry that unused room forward to 2025 only. So in 2025, you could contribute up to $16,000 total - your 2024 leftover plus your new 2025 room. But any 2024 room you don't use by the end of 2025 disappears permanently.

This is completely different from how your TFSA works, where unused room accumulates year after year with no expiry date. The FHSA has a use-it-or-lose-it rule with a one-year grace period.

Why the CRA structured it this way

The FHSA is designed to get you to your first home purchase quickly, not to sit as a long-term savings vehicle. The $40,000 lifetime limit and 15-year maximum holding period already push you toward action. The contribution room expiry adds more urgency.

If you opened your FHSA in 2023 but contributed nothing that year, you had until December 31, 2024 to use that $8,000 room. If you missed it, that room is gone - you can't suddenly contribute $24,000 in 2025 to catch up.

The math on lost room

Missing a year of contributions doesn't just cost you the tax deduction now. At a 30% marginal rate, skipping $8,000 in FHSA contributions means giving up a $2,400 tax refund. That money could have grown tax-free until you buy your home, then come out tax-free too.

More importantly, you've lost $8,000 of your lifetime $40,000 FHSA limit forever. You can't extend the account longer to make up for it - the 15-year clock keeps ticking regardless of how much you've contributed.

When the deadline actually matters

If you're consistently maxing out your FHSA each year, this rule won't affect you. It only matters when life gets in the way - you forget to contribute, money's tight one year, or you're not sure whether to prioritize the FHSA over your RRSP.

The one-year carryforward does give you some flexibility. Bad year in 2024? You can double up in 2025. But set a calendar reminder for December because that unused 2024 room expires whether you remember it or not.

Check your room before year-end

Your CRA My Account will show your available FHSA contribution room, including any carried forward from the previous year. TaxSplit.ca can help you figure out whether maxing out your FHSA makes more sense than splitting contributions between your FHSA and RRSP based on your income and province.

If you've got unused FHSA room from last year, December 31st is a hard deadline. After that, you're down to $8,000 per year until you hit the $40,000 lifetime limit or buy your first home - whichever comes first.