6 Corporate Tax Audit Support 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 corporate tax audit support work, not a general example.
Case Study 1 · Cash and remittance control
$120,000 Of Working Capital Freed From The Tax Cycle — Corporation Under a GST/HST, Mississauga
Client: A corporation under a GST/HST review · Where: Mississauga, Ontario · Engagement: 4 weeks, fixed fee
Working capital freed$120,000
On-time remittancesEvery period since
Forecast horizon13 weeks
The situation
A corporation under a GST/HST review in Mississauga, Ontario was profitable on paper and short of cash every month. An objection deadline that had passed with no extension applied for explained most of the gap.
What we did
We brought every outstanding return current, then negotiated a payment arrangement that stopped the collections action and built a thirteen-week cash view so tax payments stopped competing with payroll for the same dollars.
The result
$120,000 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 2 · Deadline rescue
11-Week Turnaround Beat The Deadline And Saved $81,000 — Restaurant Under a Net-Worth, Lethbridge
Client: A restaurant under a net-worth audit · Where: Lethbridge, Alberta · Engagement: 11 weeks, fixed fee
Late-filing penalty avoided$81,000
Filed with13 days to spare
Next yearPapers ready
The situation
With the deadline for corporate tax audit support weeks away, a restaurant under a net-worth audit in Lethbridge, Alberta was carrying six years of unfiled corporate and personal returns and an active collections file. The exposure if the date slipped was around $81,000.
What we did
We traced each unexplained deposit to its source — loans, transfers between accounts, an insurance settlement — and reduced the net-worth assessment accordingly. The filing went in complete rather than provisional, so there was no amended return to follow.
The result
Filed with 13 days to spare. $81,000 in late-filing penalties avoided, and the working papers are ready for the following year.
Case Study 3 · Structure rebuilt
Holding Structure Added, $52,000 Saved Annually — Taxpayer with Frozen Bank, Moncton
Client: A taxpayer with frozen bank accounts · Where: Moncton, New Brunswick · Engagement: 6 weeks, fixed fee
Annual saving$52,000
ReorganisationTax-neutral
StructureMatches operations
The situation
A taxpayer with frozen bank accounts in Moncton, New Brunswick was carrying a director liability assessment for a corporation that had already stopped operating, and every option for fixing it ran through a reorganisation that had to be done without triggering tax.
What we did
Working with the client's lawyer, we filed the disclosure through the Voluntary Disclosures Program before contact, which removed the gross-negligence penalty entirely and prepared the elections, resolutions and valuations the structure needed to stand up.
The result
The structure now matches the business. Annual saving of $52,000, and the reorganisation itself was tax-neutral.
Case Study 4 · Sale and succession
Share Sale Restructured, $280,000 Less Tax On Closing — Business Owner with a, Kitchener
Client: A business owner with a director liability assessment · Where: Kitchener, Ontario · Engagement: 3 weeks, fixed fee
Tax saved on closing$280,000
PriceAs agreed
Post-closing adjustmentsNone
The situation
A business owner with a director liability assessment in Kitchener, Ontario was preparing to sell. Due diligence surfaced a shareholder loan balance that would have been picked up as income on closing, which would have reduced the price or killed the deal outright.
What we did
We cleaned up the historical file, assembled the contemporaneous records, filed a structured response to each proposed adjustment with the supporting documents indexed, and had the proposal withdrawn, and prepared the due-diligence package the buyer's advisers actually asked for.
The result
The deal closed at the agreed price. $280,000 of tax was saved against the structure originally proposed, with no post-closing adjustment.
Case Study 5 · CRA review defended
$100,000 Reassessment Reduced To Nil On Review — Contractor Facing a Proposed, London
Client: A contractor facing a proposed reassessment · Where: London, Ontario · Engagement: 9 weeks, fixed fee
Reassessment reduced toNil
Tax protected$100,000
Prior filingsUndisturbed
The situation
A review notice arrived at a contractor facing a proposed reassessment in London, Ontario covering corporate tax audit support for two tax years. The auditor's working position was an adjustment of $100,000, driven by a net-worth assessment built on unexplained deposits that were actually loan proceeds.
What we did
Rather than negotiate, we rebuilt the record. We brought every outstanding return current, then negotiated a payment arrangement that stopped the collections action and submitted a point-by-point response that answered each proposed adjustment with the document behind it.
The result
The auditor accepted the documented position and closed the review without adjustment, protecting $100,000 and leaving the prior filings undisturbed.
Case Study 6 · Planning that cut the bill
$50,000 Cut From The Annual Tax Bill — Family Business Under a, Hamilton
Client: A family business under a related-party review · Where: Hamilton, Ontario · Engagement: 5 weeks, fixed fee
First-year saving$50,000
RepeatsAnnually
Filing positionUnchanged in risk
The situation
A family business under a related-party review in Hamilton, Ontario was compliant but paying more than it needed to. The prior year had been filed correctly and still left an objection deadline that had passed with no extension applied for on the table.
What we did
We modelled the current position against the alternatives before changing anything, then traced each unexplained deposit to its source — loans, transfers between accounts, an insurance settlement — and reduced the net-worth assessment accordingly.
The result
The change saved $50,000 in the first year and repeats annually. Nothing about the filings became more aggressive; the position is simply the one the rules already allowed.
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.
