Can I File a Joint US Return with My Non-Resident Canadian Spouse?

Q: When does the election cost money?

The election costs money in a narrow set of circumstances: High Canadian income with FTC limitation issues. If the Canadian spouse's income is high enough to push the combined income into the highest US brackets, and the FTC limitation prevents full use of the Canadian tax credits, the election adds US tax that exceeds the MFJ bracket benefit. NIIT exposure. The 3.8% NIIT applies to the combined MAGI on a joint return.

By Yarik Yarosh, CPA ·August 21, 2026 ·10 min read

Written by Yarik Yarosh, CPA (US & Canada) August 21, 2026 · FL CPA license AC61704 · CPA Ontario

If you are a US citizen or resident alien married to a Canadian who is not a US person, you can elect to file a joint US return by treating your spouse as a US resident under IRC 6013(g). The election gives you the married filing jointly (MFJ) brackets, which are wider than the married filing separately (MFS) brackets, and the higher MFJ standard deduction. The trade-off is that your Canadian spouse’s worldwide income becomes reportable (and potentially taxable) on the US return.

Whether the election saves or costs money depends on the numbers: your income, your spouse’s income, and how much of your spouse’s Canadian tax generates usable FTCs on the joint return.

✓Key takeaway

The IRC 6013(g) election treats the non-resident alien spouse as a US resident for the entire tax year. Both spouses report worldwide income on the joint return. The election gives you MFJ brackets (nearly double the MFS brackets at most levels), the full MFJ standard deduction ($31,400 for 2026, estimated, vs $15,700 for MFS), and access to credits that MFS restricts (education credits, child tax credit phase-out range). The cost is that your spouse’s Canadian income is included on the US return, though the FTC for Canadian tax paid usually eliminates any incremental US tax on that income (because Canadian rates are higher than US rates at most levels). The election is revocable, but revoking it is permanent: once revoked, you cannot make it again (IRC 6013(g)(4)).

How does the election work?

You attach a statement to your joint return (Form 1040) for the first year of the election. The statement identifies both spouses, states that you are electing to treat the non-resident spouse as a US resident under IRC 6013(g), and is signed by both spouses. There is no separate form.

Once made, the election applies for that year and all subsequent years until it is revoked or terminated. It is not a year-by-year choice (unlike some other elections). You are locked in until one of the termination events occurs.

Termination events (IRC 6013(g)(4)):

Either spouse revokes the election (by attaching a revocation statement to that year’s return)
The couple divorces or legally separates
The US-citizen spouse dies

A revocation is permanent. If you revoke the election, you can never make it again for the same spouse (IRC 6013(g)(4)(B)). This means the decision to revoke should be made carefully. If your spouse’s income situation changes and the election becomes unfavorable, you can revoke, but you lose the option permanently.

When does the election save money?

The election saves money when the tax benefit of MFJ brackets and credits exceeds the incremental US tax on the Canadian spouse’s worldwide income.

Scenario 1: one-earner couple. The US person earns $120,000. The Canadian spouse has no income (stay-at-home parent, or income below the filing threshold). MFS status taxes the $120,000 in the narrower MFS brackets and gives the $15,700 MFS standard deduction. MFJ status taxes the same $120,000 in the wider MFJ brackets and gives the $31,400 MFJ standard deduction. The election saves tax because there is no Canadian income to add, and the wider brackets and higher deduction reduce US tax by $5,000 to $10,000+, depending on the income level.

Scenario 2: two-earner couple, Canadian spouse has high Canadian income. The US person earns $100,000 in the US. The Canadian spouse earns $90,000 (CAD) in Canada. MFJ adds the spouse’s $90,000 CAD (converted to USD) to the US return. The combined income is taxed in MFJ brackets, but the spouse’s Canadian tax generates an FTC that offsets the US tax on the Canadian income. If the Canadian tax rate on the $90,000 exceeds the incremental US rate on that income in the MFJ brackets, the FTC wipes out the US tax on the Canadian income, and the remaining benefit is the wider brackets on the US person’s income. The election usually still saves money in this scenario, but the savings are smaller.

Scenario 3: two-earner couple, Canadian spouse has very high income. The US person earns $80,000. The Canadian spouse earns $250,000 (CAD) in Canada. Adding $250,000 CAD to the US return pushes the combined income into higher US brackets. The Canadian tax generates a large FTC, but the FTC limitation under IRC 904(a) may prevent the full credit from being used in the current year (excess credits carry forward). The election may still save money, but the analysis requires a full calculation of both filing statuses to compare.

When does the election cost money?

The election costs money in a narrow set of circumstances:

High Canadian income with FTC limitation issues. If the Canadian spouse’s income is high enough to push the combined income into the highest US brackets, and the FTC limitation prevents full use of the Canadian tax credits, the election adds US tax that exceeds the MFJ bracket benefit.

NIIT exposure. The 3.8% NIIT applies to the combined MAGI on a joint return. If the Canadian spouse has investment income, adding it to the joint return may push the combined MAGI over the $250,000 MFJ threshold, triggering NIIT that would not apply on an MFS return (MFS threshold is $125,000, but the US person’s income alone may already exceed that, so the comparison is not always straightforward).

Loss of MFS-specific benefits. Some planning strategies work better with MFS (e.g., income-driven student loan repayment plans that use only one spouse’s income). The election eliminates MFS as an option for the duration of the election.

FBAR, Form 8938, and foreign account reporting

The election treats the Canadian spouse as a US resident for income tax purposes. This means the Canadian spouse’s financial accounts become reportable:

FBAR (FinCEN 114): the Canadian spouse must file an FBAR reporting all non-US financial accounts with an aggregate balance exceeding $10,000 at any point during the year. For a Canadian resident, this includes every Canadian bank account, investment account, RRSP, TFSA, and RESP.
Form 8938: the Canadian spouse must file Form 8938 (FATCA) if the foreign financial assets exceed the applicable threshold (higher thresholds apply for joint filers living abroad, but if the US person lives in the US and the Canadian spouse lives in Canada, the threshold analysis is based on the US person’s residence, not the Canadian spouse’s).
PFIC reporting: if the Canadian spouse holds Canadian mutual funds or Canadian-listed ETFs, those are PFICs, and Form 8621 is required for each one. This is one of the most significant compliance costs of the election: the Canadian spouse’s Canadian investment portfolio suddenly has US PFIC reporting obligations.

The reporting burden is the hidden cost of the election. The tax savings may be $5,000 to $10,000, but the compliance cost (preparing the additional forms, gathering Canadian account information, PFIC calculations) adds to the annual filing cost. For a simple Canadian financial picture (one bank account, one RRSP), the burden is manageable. For a complex one (multiple accounts, investment portfolio, TFSA, RESP), the burden is significant.

Hypothetical example

A hypothetical with made-up numbers. A US citizen in Florida is married to a Canadian citizen in Ontario. He earns $130,000 from a US employer. She earns $75,000 CAD (~$55,000 USD) from a Canadian employer. She has an RRSP with $200,000 CAD and a bank account with $30,000 CAD. No TFSA, no Canadian mutual funds.

Without the election (MFS): he files MFS with $130,000 income. His federal tax is approximately $24,000 (after standard deduction, MFS brackets). She files nothing in the US (she is not a US person).

With the election (MFJ): combined income is $185,000. MFJ federal tax is approximately $26,500 (after MFJ standard deduction, MFJ brackets). Her Canadian federal + Ontario tax on $75,000 CAD is approximately $14,000 CAD (~$10,300 USD). The FTC for her Canadian tax ($10,300) offsets the incremental US tax on her income. The net US tax on the joint return is approximately $24,000 minus the bracket benefit (wider MFJ brackets on his $130,000) plus any residual from her income after FTC. The bracket benefit is approximately $6,000 to $8,000. Net result: the election saves approximately $4,000 to $6,000 per year.

Additional compliance: she must file FBAR (bank account + RRSP exceed $10,000 aggregate). Form 8938 likely not required (joint filer in the US, threshold is $100,000 at year-end, her foreign accounts total ~$230,000 CAD = ~$170,000 USD, which may be above the $100,000 threshold but below the $400,000 year-end threshold for joint filers residing in the US, depending on the year). No PFIC issues (RRSP is treaty-shielded, no Canadian mutual funds). Manageable.

Change the facts. She has $300,000 in Canadian mutual funds in a non-registered account. Now each fund requires Form 8621. If she holds 5 mutual funds, that is 5 Forms 8621, each requiring a PFIC calculation. The compliance cost of the election just increased significantly. The $4,000 to $6,000 tax savings may be partially or fully consumed by the additional preparation fees.

Illustrative numbers only, not a real client and not advice for your facts.

Can I make the election retroactively?

No. The election is made on a timely filed return (including extensions) for the first year it applies. You cannot amend a prior year’s MFS return to add the election retroactively. If you missed the election in a prior year, you can make it on the current year’s return going forward, but you cannot go back.

What if my spouse becomes a US resident later?

If the Canadian spouse becomes a US resident (through immigration, green card, or substantial presence), the election becomes moot: they are a US resident by their own status, and MFJ is available without the election. The election can be left in place (it has no effect when both spouses are US residents) or revoked (but remember, revocation is permanent).

If the spouse later leaves the US and becomes a non-resident alien again, the election (if not revoked) continues to apply. If it was revoked when the spouse was a US resident, it cannot be reinstated.

What should I do next?

If you are filing MFS because your spouse is a non-resident alien, calculate what MFJ would look like using the 6013(g) election. Include the FTC for your spouse’s Canadian tax, the FBAR and Form 8938 obligations, and any PFIC exposure from your spouse’s Canadian investments. If the net savings are meaningful after compliance costs, make the election. If the compliance costs are close to the tax savings, MFS may be the better choice despite the higher tax rate.

The 3.8% NIIT for US citizens in Canada, because the election affects MAGI and NIIT exposure
What can I invest in without PFIC problems?, because the spouse’s Canadian investments create PFIC exposure on the joint return
Form 8938 vs FBAR: do I file both?, because the election triggers both for the Canadian spouse
Is a TFSA a foreign trust?, relevant if the Canadian spouse has a TFSA

Not sure if the 6013(g) election saves you money?

The Cross-Border Assessment is a fixed $249. You get a written, CPA-reviewed comparison of MFS vs MFJ with the election.

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Cite this page

Yarik Yarosh, CPA. "Can I File a Joint US Return with My Non-Resident Canadian Spouse?." Blue Cloud CPA, August 21, 2026. https://bluecloudcpa.com/guides/filing-jointly-non-resident-canadian-spouse-6013g

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.