6 worked GST/HST Bookkeeping 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 gst/hst bookkeeping work, not a specific client's file.
Case Study 1 · Objection and relief
$141,000 Of Penalties And Interest Cancelled On Relief — Digital Platform Seller, Mississauga
Client: A platform seller collecting tax at checkout · Where: Mississauga, Ontario · Engagement: 11 weeks, fixed fee
Penalties and interest cancelled$141,000
Relief groundsAccepted
AssessmentAdjusted to filed position
The situation — A platform seller collecting tax at checkout, Mississauga, Ontario
An assessment of $141,000 landed at a platform seller collecting tax at checkout in Mississauga, Ontario following a desk review. It turned on a registration threshold crossed nine months before anyone registered. The auditor had not seen the records behind it.
What we did for A platform seller collecting tax at checkout, Mississauga, Ontario
We backdated the registration to the date the business stopped being a small supplier, remitted the tax owing, and applied for relief on the penalty portion. We then set out the legislative basis for the position alongside the documents supporting it.
The result — A platform seller collecting tax at checkout, Mississauga, Ontario
$141,000 of penalties and interest was cancelled under the taxpayer relief provisions, and the underlying assessment was adjusted to match the filed position.
Case Study 2 · Planning that cut the bill
$11,500 Saved By Correcting What Prior Filings Had Missed — Wholesale Food Distributor, Burnaby
Client: A wholesale food distributor · Where: Burnaby, British Columbia · Engagement: 4 weeks, fixed fee
Saving identified$11,500
RecurringYes
Positions documentedAll
The situation — A wholesale food distributor, Burnaby, British Columbia
A wholesale food distributor in Burnaby, British Columbia asked for a second opinion on GST/HST bookkeeping. That followed three years of rising tax. The review found a commercial property purchase closed on the assumption no tax applied because the vendor was not registered.
What we did for A wholesale food distributor, Burnaby, British Columbia
We built the comparison first: current structure against two alternatives. Then we rebuilt the sales ledger by customer province and applied the correct place-of-supply rate to each stream. We filed corrected returns before the CRA opened a review.
The result — A wholesale food distributor, Burnaby, British Columbia
First-year saving of $11,500, with the same benefit recurring. Every position taken is documented and supported in the file.
Case Study 3 · Sale and succession
Share Sale Restructured, $660,000 Less Tax On Closing — Freight Brokerage, Kelowna
Client: A freight brokerage · Where: Kelowna, British Columbia · Engagement: 6 weeks, fixed fee
Tax saved on closing$660,000
PriceAs agreed
Post-closing adjustmentsNone
The situation — A freight brokerage, Kelowna, British Columbia
A freight brokerage in Kelowna, British Columbia was preparing to sell. Due diligence surfaced passive assets sitting inside the operating company, disqualifying the shares. That would have reduced the price or killed the deal outright.
What we did for A freight brokerage, Kelowna, British Columbia
We cleaned up the historical file. We tested the quick method against the account’s actual input tax credit history and stayed on the regular method where the credits were worth more. Then we prepared the due-diligence package the buyer's advisers actually asked for.
The result — A freight brokerage, Kelowna, British Columbia
The deal closed at the agreed price. $660,000 of tax was saved against the structure originally proposed, with no post-closing adjustment.
Case Study 4 · Deadline rescue
11-Week Turnaround Beat The Deadline And Saved $48,000 — Late GST/HST Registrant, Winnipeg
Client: A seller who crossed the registration threshold before registering · Where: Winnipeg, Manitoba · Engagement: 11 weeks, fixed fee
Late-filing penalty avoided$48,000
Filed with9 days to spare
Next yearPapers ready
The situation — A seller who crossed the registration threshold before registering, Winnipeg, Manitoba
A seller who crossed the registration threshold before registering in Winnipeg, Manitoba was weeks away from the deadline for GST/HST bookkeeping. Behind that sat HST charged at the home-province rate on sales into four different provinces. The exposure if the date slipped was around $48,000.
What we did for A seller who crossed the registration threshold before registering, Winnipeg, Manitoba
We brought the nil and missing periods current so the account was clean before the refund claim was filed. The filing went in complete rather than provisional, so there was no amended return to follow.
The result — A seller who crossed the registration threshold before registering, Winnipeg, Manitoba
Filed with 9 days to spare. $48,000 in late-filing penalties avoided, and the working papers are ready for the following year.
Case Study 5 · Scaling without breaking
Second-Province Expansion Handled, $121,000 Of Cash Released — Interprovincial Construction Supplier, Kitchener
Client: A construction supplier selling into three provinces · Where: Kitchener, Ontario · Engagement: 11 weeks, fixed fee
Cash released$121,000
New registrationsComplete on day one
Compliance gapsNone
The situation — A construction supplier selling into three provinces, Kitchener, Ontario
Revenue at a construction supplier selling into three provinces in Kitchener, Ontario was up sharply and cash was tighter than ever. Underneath it sat management fees between two related registrants carrying tax that only ever went out and came back.
What we did for A construction supplier selling into three provinces, Kitchener, Ontario
We self-assessed the tax on the real property acquisition in the correct reporting period and claimed the offsetting input tax credit in the same return. Every new obligation was set up before it was triggered, not after. That covered registration, remittance frequency and provincial filing.
The result — A construction supplier selling into three provinces, Kitchener, Ontario
$121,000 of cash was released from the working capital cycle. The expansion completed with every registration and filing obligation covered from day one.
Case Study 6 · Backlog brought current
Collections Halted And $84,000 Cut From A 5-Year Backlog — Used-Equipment Dealer, Toronto
The situation — A used-equipment dealer, Toronto, Ontario
By the time a used-equipment dealer in Toronto, Ontario called, 5 years were outstanding. The CRA had assessed on estimates. Underneath it sat input tax credits claimed on the exempt side of a mixed-supply business.
What we did for A used-equipment dealer, Toronto, Ontario
We reconstructed the records year by year. We filed the section 156 election for the related registrants, so supplies between them stopped carrying tax that served no purpose but cash-flow drag. Each filing replaced an arbitrary assessment with a real one.
The result — A used-equipment dealer, Toronto, Ontario
The account is current. Filing on real numbers rather than CRA estimates reduced the balance by $84,000, and a relief application addressed part of the accumulated interest.
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.
