6 Master File and Local File Documentation tax and accounting engagements in full — what the client came to us with, what we did, and what it was worth. Each one is specific to master file and local file documentation work, not a general example.
Case Study 1 · Deadline rescue
$95,000 Late-Filing Penalty Cancelled On Relief Application — Dual Citizen with a, Calgary
Client: A dual citizen with a US retirement account · Where: Calgary, Alberta · Engagement: 10 weeks, fixed fee
Penalty cancelled$95,000
Relief applicationGranted
ReturnAccepted as filed
The situation
A dual citizen with a US retirement account in Calgary, Alberta had already missed one deadline and was about to miss a second. Behind it sat a US LLC taxed as a corporation in Canada, producing double tax on the same income, and a penalty of $95,000 was accruing.
What we did
We split the work into what had to happen before the deadline and what could follow it, then reported the deemed disposition properly on the departure return and claimed the foreign tax credits that had been left unused.
The result
The outstanding return was accepted as filed, and the taxpayer relief application cancelled $95,000 of the penalty already assessed on the earlier year.
Case Study 2 · Structure rebuilt
Corporate Structure Rebuilt For $69,000 Of Annual Savings — Canadian Resident with a, Moncton
Client: A Canadian resident with a US rental property · Where: Moncton, New Brunswick · Engagement: 8 weeks, fixed fee
Saving per year$69,000
DocumentationComplete
Transfer basisRollover
The situation
The structure at a Canadian resident with a US rental property in Moncton, New Brunswick had been set up years earlier for a business that no longer existed, and foreign accounts that had passed the $100,000 T1135 threshold three years earlier had become expensive.
What we did
We restructured the US holding so the Canadian and US characterisations aligned, ending the double taxation going forward. The reorganisation used the rollover provisions rather than a taxable transfer, so no tax fell due on the restructuring itself.
The result
$69,000 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
$102,000 Of Excess Withholding Refunded On Election — Emigrant Who Left Canada, Brampton
Client: An emigrant who left Canada mid-year · Where: Brampton, Ontario · Engagement: 7 weeks, fixed fee
Withholding refunded$102,000
ElectionFiled and accepted
Cross-border reportingConsistent
The situation
An emigrant who left Canada mid-year in Brampton, Ontario was paying tax in two countries on one stream of income, because US tax paid but no foreign tax credit claimed on the Canadian return had never been reviewed against the treaty.
What we did
We filed the outstanding T1135 disclosures through the Voluntary Disclosures Program, which eliminated the penalty exposure entirely and coordinated the timing so the credit claimed in Canada matched the tax actually paid abroad.
The result
$102,000 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
Instalments Rebased, $81,000 Of Cash Returned To The Business — US Citizen Living in, Hamilton
Client: A US citizen living in Canada · Where: Hamilton, Ontario · Engagement: 10 weeks, fixed fee
Cash returned$81,000
Instalment basisCurrent year
ReviewedQuarterly
The situation
A US citizen living in Canada in Hamilton, Ontario was paying instalments calculated on a prior year that no longer reflected the business. A departure year filed as a normal resident return with no deemed disposition reported was tying up $81,000 of cash.
What we did
We rebased the instalments on the current-year estimate rather than the prior-year default, and filed the section 216 election with the supporting rental statements and recovered the excess withholding as a refund.
The result
$81,000 of cash stayed in the business, the penalty cycle ended, and the instalment position is reviewed each quarter against actual results.
Case Study 5 · Planning that cut the bill
Remuneration Review Saved $55,000 Across Corporate And Personal Returns — Canadian with a US, Vancouver
Client: A Canadian with a US employer · Where: Vancouver, British Columbia · Engagement: 9 weeks, fixed fee
Combined saving$55,000
ScopeCorporate + personal
Future yearsNo rework needed
The situation
Nothing was wrong at a Canadian with a US employer in Vancouver, British Columbia — the filings were on time and accurate. What they were not was planned. 25% withholding on gross Canadian rent where a section 216 election would have taxed only the net had never been reviewed.
What we did
We reported the deemed disposition properly on the departure return and claimed the foreign tax credits that had been left unused, and ran the numbers across both the corporate and personal returns so the saving was real rather than deferred into someone else's hands.
The result
$55,000 came off the combined corporate and personal tax bill, and the structure holds for future years without further work.
Case Study 6 · Records and systems rebuilt
18 Months Reconciled And $20,000 Of Input Tax Recovered — Canadian Corporation with US, Barrie
Client: A Canadian corporation with US customers · Where: Barrie, Ontario · Engagement: 4 weeks, fixed fee
Months reconciled18
Input tax recovered$20,000
Close time6 days
The situation
A Canadian corporation with US customers in Barrie, Ontario was carrying a US LLC taxed as a corporation in Canada, producing double tax on the same income. Nothing reconciled, and every filing started with 18 months of cleanup.
What we did
We rebuilt from source rather than correcting on top of the existing file. We restructured the US holding so the Canadian and US characterisations aligned, ending the double taxation going forward, then set the routine that keeps it clean.
The result
18 months reconciled to the bank. The close now takes 6 days, and $20,000 of previously unclaimable input tax was recovered in the process.
Reviewed for the 2025 tax year by Udit Gupta, Certified Tax Accountant. Figures describe representative engagements of this type; outcomes depend on your own facts. Client names and identifying details are omitted for confidentiality.
