6 worked Cross-Border Corporate Tax case studies — the position a client typically comes to us with, what we do, and what it is worth. Each is an illustrative example built on the rules that apply to cross-border corporate tax work, not a specific client's file.
Case Study 1 · Deadline rescue
Filed On Time From A Standing Start, $60,000 Penalty Avoided — Canadian on US Payroll, Brampton
Client: A Canadian with a US employer · Where: Brampton, Ontario · Engagement: 5 weeks, fixed fee
Penalty avoided$60,000
Turnaround5 weeks
FiledOn time
The situation — A Canadian with a US employer, Brampton, Ontario
A Canadian with a US employer in Brampton, Ontario came to us 5 weeks before its filing deadline. The file came with a departure year filed as a normal resident return with no deemed disposition reported. A late filing would have triggered a penalty of roughly $60,000 before interest.
What we did for A Canadian with a US employer, Brampton, Ontario
We worked backwards from the deadline. We reported the deemed disposition properly on the departure return and claimed the foreign tax credits that had been left unused. We prioritised the items that actually gated the filing and deferred everything that did not.
The result — A Canadian with a US employer, Brampton, Ontario
The return was filed on time and complete. The $60,000 penalty never arose, and the compliance calendar we set means the next deadline is scheduled rather than discovered.
Case Study 2 · Structure rebuilt
Corporate Structure Rebuilt For $33,500 Of Annual Savings — US Citizen in Canada, Lethbridge
Client: A US citizen living in Canada · Where: Lethbridge, Alberta · Engagement: 11 weeks, fixed fee
Saving per year$33,500
DocumentationComplete
Transfer basisRollover
The situation — A US citizen living in Canada, Lethbridge, Alberta
The structure at a US citizen living in Canada in Lethbridge, Alberta dated from years earlier. It had been set up for a business that no longer existed. A US LLC taxed as a corporation in Canada, producing double tax on the same income had become expensive.
What we did for A US citizen living in Canada, Lethbridge, Alberta
We registered the payer for a non-resident withholding account, remitted the Regulation 105 amounts due, and applied for waivers covering the rest of the contract. The reorganisation used the rollover provisions rather than a taxable transfer, so no tax fell due on the restructuring itself.
The result — A US citizen living in Canada, Lethbridge, Alberta
$33,500 of annual saving, achieved on a tax-deferred basis. The minute book, elections and valuations are all in the file.
Case Study 3 · Cross-border exposure resolved
$65,000 Of Excess Withholding Refunded On Election — US LLC Shareholder, Halifax
Client: A shareholder of a US LLC · Where: Halifax, Nova Scotia · Engagement: 4 weeks, fixed fee
Withholding refunded$65,000
ElectionFiled and accepted
Cross-border reportingConsistent
The situation — A shareholder of a US LLC, Halifax, Nova Scotia
A shareholder of a US LLC in Halifax, Nova Scotia was paying tax in two countries on one stream of income. Winters spent in the United States with the day count kept casually and no residency position documented anywhere had never been reviewed against the treaty.
What we did for A shareholder of a US LLC, Halifax, Nova Scotia
We applied the treaty rate to the dividend withholding, filed the NR4 return, and remitted the shortfall before the CRA assessed the payer for it. We also coordinated the timing so the credit claimed in Canada matched the tax actually paid abroad.
The result — A shareholder of a US LLC, Halifax, Nova Scotia
$65,000 of excess withholding was refunded and the exposure closed. Both sides of the border now report consistently, which is what keeps the credit claimable.
Case Study 4 · Cash and remittance control
$123,000 Of Working Capital Freed From The Tax Cycle — Arizona Snowbird, Moncton
Client: A snowbird spending winters in Arizona · Where: Moncton, New Brunswick · Engagement: 6 weeks, fixed fee
Working capital freed$123,000
On-time remittancesEvery period since
Forecast horizon13 weeks
The situation — A snowbird spending winters in Arizona, Moncton, New Brunswick
A snowbird spending winters in Arizona in Moncton, New Brunswick was profitable on paper and short of cash every month. Invoices paid to a non-resident consultant working on site in Canada with no Regulation 105 withholding taken explained most of the gap.
What we did for A snowbird spending winters in Arizona, Moncton, New Brunswick
We reconstructed the day count on both sides of the border and documented the residency and treaty position before either revenue authority asked. We also built a thirteen-week cash view so tax payments stopped competing with payroll for the same dollars.
The result — A snowbird spending winters in Arizona, Moncton, New Brunswick
$123,000 was released back into working capital. Remittances have been on time every period since, and the forecast shows the tax outflow before it lands.
Case Study 5 · Planning that cut the bill
$58,000 Cut From The Annual Tax Bill — Cross-Border Contractor, Ottawa
Client: A contractor working on both sides of the border · Where: Ottawa, Ontario · Engagement: 10 weeks, fixed fee
First-year saving$58,000
RepeatsAnnually
Filing positionUnchanged in risk
The situation — A contractor working on both sides of the border, Ottawa, Ontario
A contractor working on both sides of the border in Ottawa, Ontario was compliant but paying more than it needed to. The prior year had been filed correctly. It still left US tax paid but no foreign tax credit claimed on the Canadian return on the table.
What we did for A contractor working on both sides of the border, Ottawa, Ontario
We modelled the current position against the alternatives before changing anything. Then we aligned the Canadian and US reporting of the same income so the foreign tax credit claim carried support on both returns.
The result — A contractor working on both sides of the border, Ottawa, Ontario
The change saved $58,000 in the first year and repeats annually. Nothing about the filings became more aggressive. The position is simply the one the rules already allowed.
Case Study 6 · Records and systems rebuilt
24 Months Reconciled And $9,500 Of Input Tax Recovered — US Retirement Account Holder, Kitchener
Client: A dual citizen with a US retirement account · Where: Kitchener, Ontario · Engagement: 11 weeks, fixed fee
Months reconciled24
Input tax recovered$9,500
Close time7 days
The situation — A dual citizen with a US retirement account, Kitchener, Ontario
Nothing reconciled at a dual citizen with a US retirement account in Kitchener, Ontario. Every filing started with 24 months of cleanup. The file was carrying 25% withholding on gross Canadian rent where a section 216 election would have taxed only the net.
What we did for A dual citizen with a US retirement account, Kitchener, Ontario
We rebuilt from source rather than correcting on top of the existing file. We filed the outstanding T1135 disclosures through the Voluntary Disclosures Program, which eliminated the penalty exposure entirely. Then we set the routine that keeps it clean.
The result — A dual citizen with a US retirement account, Kitchener, Ontario
24 months reconciled to the bank. The close now takes 7 days, and $9,500 of previously unclaimable input tax was recovered in the process.
Reviewed by Udit Gupta, Founder and Tax Accountant for the 2025 tax year. These case studies are illustrative worked examples composed from the CRA rules that apply to this type of work, not specific client files; figures are representative and outcomes depend on your own facts.
