RRSP vs 401(k) vs IRA
All three are recognised retirement vehicles, but each is recognised by the other country only through a specific treaty provision — and transfers between them are a separate question again.
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All three are recognised retirement vehicles, but each is recognised by the other country only through a specific treaty provision — and transfers between them are a separate question again.
Side by side
| RRSP | 401(k) / IRA | |
|---|---|---|
| Home treatment | Contributions deductible, growth deferred | Contributions deductible or after-tax depending on the plan |
| Recognition abroad | Deferral protected by treaty where the plan qualifies | Deferral protected by treaty where the plan qualifies |
| Withdrawal abroad | Withholding at source, often reduced by treaty | Withholding at source, often reduced by treaty |
| Cross-border contributions | May be deductible against foreign employment income by treaty | May be deductible in Canada through a treaty-based claim |
| Transfers between them | Possible in limited circumstances with elections | Possible in limited circumstances with elections |
Which one applies to you
Do not assume symmetry. Confirm that the specific plan qualifies under the treaty, that the election or filing which protects the deferral has been made, and that a transfer is genuinely available before initiating one.
Your next step
The first call establishes whether there is work to do. Everything after that is quoted.
Checked and signed off for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. Written as general guidance, not as a recommendation for your situation. Talk it through with us before acting on it.
Where international tax accountant comes into this file
If you came here for international tax accountant, this is where it is dealt with. The subject is RRSP vs 401, and the page covers who it reaches, what then has to be filed, and what we charge to do the work.
The difference a dedicated cross-border team makes
The order of filing is planned, not improvised
Which return goes first decides whether relief can be claimed at all. That sequence is worked out before anything is submitted.
Residence is tested, not assumed
Where you are resident for treaty purposes is a question with a method. We work through it and write down the answer, with the facts it rests on.
4 global offices
Meet us in person in India, the USA, Canada and the UAE, or send everything through the secure portal — the same process either way.
You deal with the person who did the work
The practitioner who prepared and reviewed your file is the one who answers the question about it.
Files that look like this one
Canadian plan left behind after a move to the United States
A client moved south for work and left a registered plan with a Canadian institution, having been told by acquaintances that it should be collapsed before departure. It should not have been. The work consisted of confirming the plan fell inside the treaty categories, documenting the deferral position on the US return, and adding the account to the foreign account and asset reporting that now applied. The engagement produced a written position covering the plan, its reporting and the treatment of eventual withdrawals, so the client could leave the plan invested rather than liquidating it under time pressure.
Employer plan contributions claimed against income taxed in the other country
A Canadian resident took a role with a US employer and continued contributing to the employer plan, with no deduction being taken on the Canadian side. The treaty allows a claim in these circumstances where the plan and the employment meet the conditions, but it runs through a treaty-based position on the return rather than the ordinary domestic deduction line. We established that the conditions were met, prepared the claim for the year, and set out what had to remain true for it to continue. The engagement produced a filed claim and a rule for subsequent years.
Consolidating a US plan into a Canadian plan after repatriation
A returning client wanted everything under one roof and asked for the US employer plan to be moved into the Canadian registered plan. The transfer route exists but is narrow, depends on elections made in a particular order, and interacts with withholding taken on the way out. We mapped the sequence, confirmed the elections available for this specific plan, and quantified in mechanism terms what each step would cost and recover. The engagement produced a completed transfer with the supporting elections filed, and a file recording why each step was taken in the order it was.
Withholding on a pension payment settled before the money moved
A client living outside Canada was about to draw on a registered plan and had assumed the institution would apply a treaty rate automatically. It would not have. The rate depends on the residence and treaty documentation being with the payer before payment, and on whether the amount is a periodic payment or a lump sum. We put the documentation in place, confirmed how the payment would be characterised, and set out the reporting on the other side. The engagement produced a payment taxed at the correct rate at source rather than a refund claim a year later.
Deferral position never taken on earlier returns
A dual filer had held a registered plan for years while filing on both sides, and the deferral position protecting the plan had never been taken on the US returns. Nothing had gone wrong yet, but the returns did not say what the client believed they said. The work was to establish that the plan qualified, determine which years remained open, and bring the filings into line so that the plan's treatment was consistent from year to year. The engagement produced corrected returns and a documented position the client can point to if it is ever questioned.
Advice that the transfer should not go ahead
A client approaching a cross-border move asked us to arrange a lump-sum transfer between retirement vehicles before departure, having read that it simplified matters. Working through the specific plan showed the transfer route was not available for it, and that the withdrawal needed to execute the idea would have been taxed at source with no offsetting relief on arrival. We set out the analysis in writing and recommended leaving both plans where they were. The engagement produced a documented decision not to act, and a note of the conditions under which it should be revisited.
A Retirement Plan That Grows Tax-Deferred in Only One Country
Cross-border retirement accounts are recognised by treaty, but the deferral usually has to be elected rather than assumed. The engagement checks whether the election was made, makes it where it was missed, and reports the account on whichever side requires it.
Read how this one runsDeemed Resident or Factual Resident — Not the Same File
The two statuses attract different returns, different credits and different provincial treatment, and the label is decided by facts rather than chosen. Establishing which applies is the work; the filing follows from it without argument.
Read how this one runsAll case studies — every published engagement in one place.
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