Q: My wife and I are relocating from Texas to Toronto later this year for my job. We have two kids and have aggressively funded their 529 College Savings Plans. There's about $150,000 across both accounts. Our U.S. CPA told us to just leave them alone because they grow tax-free and we can use them no matter where the kids go to college. Is there anything else we need to do with these accounts before we cross the border?
The Answer
So your U.S. CPA is right about how the IRS treats 529 plans. The problem is that the IRS isn't the only tax authority you need to worry about anymore.
Canada Doesn't Care About Your 529
The CRA does not recognize 529 plans as tax-sheltered accounts. Once you become a Canadian resident, the CRA treats your 529 the same way it treats any other taxable investment account. Interest, dividends, and realized capital gains are all taxable in Canada, every year.
Your CPA's advice works if you stay in the U.S. It falls apart the moment you cross the border.
The (Potential) Resident Trust Problem
Because you, the parent, own and control the 529 plan, there is theoretical risk of the CRA classifying it as a "Canadian resident trust" once you establish residency. The logic presented by the tax nerd side is that the person making decisions about the account now lives in Canada, so the "mind and management" of the trust is in Canada.
If that classification sticks, you're filing T3 trust returns every year. And any income retained inside the trust gets taxed at Canada's highest marginal rate. Not your marginal rate. The highest one.
That's $150,000 sitting in an account that was supposed to be tax-free, now generating annual Canadian tax bills at the worst possible rate. (Plus the darn accounting fees to file the things.)
The Fix: Change Ownership Before You Move
529 plans let you change the account owner. The cleanest solution is to transfer ownership to a trusted U.S. relative before you leave. (Read: A grandparent, aunt, or uncle who isn't moving to Canada.)
With a U.S. resident as the legal owner, the 529 stays outside the CRA's reach. The account keeps its tax-free status under U.S. rules, and you avoid any resident trust risk entirely.
You can still contribute after the move by gifting cash to the new U.S. owner. Keep the U.S. annual gift tax exclusion limits in mind ($19,000 per recipient for 2026).
The Bigger Point
Single-country tax advice breaks down the moment someone moves internationally. Your U.S. CPA gave you correct U.S. tax advice. But "correct for the U.S." and "correct for someone moving to Canada" are two different things. This is exactly the kind of gap that cross-border planning exists to close.
Usual Disclaimer: What is written here is not formal tax advice. I'm not a tax lawyer. I’m not your CPA. It’s possible, or dare I say even probable, that the comments and opinions expressed here contain material errors, are out of date, or that important stuff has been left out. Don’t use this info to make tax decisions. Hire a real professional to help you.