6 worked GST/HST Return Adjustment 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 return adjustment work, not a specific client's file.
Case Study 1 · Objection and relief
Notice Of Objection Allowed In Full, $129,000 Reversed — Wholesale Food Distributor, Brampton
The situation — A wholesale food distributor, Brampton, Ontario
A wholesale food distributor in Brampton, Ontario had been reassessed for $129,000. 7 days were left on the objection deadline. The reassessment rested on export sales zero-rated with no shipping documentation behind them.
What we did for A wholesale food distributor, Brampton, Ontario
We filed the objection inside the deadline with a complete submission rather than a placeholder. Alongside it, we assembled the export documentation, restored zero-rating on the qualifying sales, and reduced the proposed assessment.
The result — A wholesale food distributor, Brampton, Ontario
The appeals officer allowed the objection in full. $129,000 was reversed and the account returned to a nil balance.
Case Study 2 · Backlog brought current
$92,000 Of Arbitrary Assessments Vacated After 3 Years — Mixed-Supply Practice, Lethbridge
Client: A professional practice with exempt and taxable supplies · Where: Lethbridge, Alberta · Engagement: 9 weeks, fixed fee
Arbitrary tax vacated$92,000
Years brought current3
Account statusCurrent
The situation — A professional practice with exempt and taxable supplies, Lethbridge, Alberta
3 years of unfiled returns had turned into notional assessments at a professional practice with exempt and taxable supplies in Lethbridge, Alberta. Underneath lay management fees between two related registrants carrying tax that only ever went out and came back. Collections had already started.
What we did for A professional practice with exempt and taxable supplies, Lethbridge, Alberta
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. We then filed every outstanding year in chronological order so the CRA could vacate the notional assessments cleanly.
The result — A professional practice with exempt and taxable supplies, Lethbridge, Alberta
All 3 years were accepted as filed. $92,000 of arbitrarily assessed tax was vacated, collections action stopped, and the account is current for the first time in 3 years.
Case Study 3 · Missed incentive claimed
$30,000 Credit Claim Filed And Accepted Without Adjustment — Interprovincial Construction Supplier, Halifax
Client: A construction supplier selling into three provinces · Where: Halifax, Nova Scotia · Engagement: 7 weeks, fixed fee
Claim value$30,000
AcceptedWithout adjustment
RepeatableAnnually
The situation — A construction supplier selling into three provinces, Halifax, Nova Scotia
A construction supplier selling into three provinces in Halifax, Nova Scotia assumed the credits did not apply to a business its size. Export sales zero-rated with no shipping documentation behind them meant they had applied all along.
What we did for A construction supplier selling into three provinces, Halifax, Nova Scotia
We identified the qualifying activity and built the documentation to support it. Then 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.
The result — A construction supplier selling into three provinces, Halifax, Nova Scotia
$30,000 recovered. Because the eligibility analysis is on file, the same claim can be repeated each year with a fraction of the effort.
Case Study 4 · Scaling without breaking
Second-Province Expansion Handled, $110,000 Of Cash Released — Freight Brokerage, Moncton
Client: A freight brokerage · Where: Moncton, New Brunswick · Engagement: 9 weeks, fixed fee
Cash released$110,000
New registrationsComplete on day one
Compliance gapsNone
The situation — A freight brokerage, Moncton, New Brunswick
Revenue at a freight brokerage in Moncton, New Brunswick was up sharply and cash was tighter than ever. Underneath it sat a registration threshold crossed nine months before anyone registered.
What we did for A freight brokerage, Moncton, New Brunswick
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. Every new obligation was set up before it was triggered, not after. That covered registration, remittance frequency and provincial filing.
The result — A freight brokerage, Moncton, New Brunswick
$110,000 of cash was released from the working capital cycle. The expansion completed with every registration and filing obligation covered from day one.
Case Study 5 · Cash and remittance control
Instalments Rebased, $67,000 Of Cash Returned To The Business — Digital Platform Seller, Ottawa
Client: A platform seller collecting tax at checkout · Where: Ottawa, Ontario · Engagement: 4 weeks, fixed fee
Cash returned$67,000
Instalment basisCurrent year
ReviewedQuarterly
The situation — A platform seller collecting tax at checkout, Ottawa, Ontario
A platform seller collecting tax at checkout in Ottawa, Ontario was paying instalments calculated on a prior year. That year no longer reflected the business. A sales tax account filed annually while the CRA had moved the business to quarterly was tying up $67,000 of cash.
What we did for A platform seller collecting tax at checkout, Ottawa, Ontario
We rebased the instalments on the current-year estimate rather than the prior-year default. Alongside that, 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.
The result — A platform seller collecting tax at checkout, Ottawa, Ontario
$67,000 of cash stayed in the business, the penalty cycle ended, and the instalment position is reviewed each quarter against actual results.
Case Study 6 · Deadline rescue
6-Week Turnaround Beat The Deadline And Saved $20,000 — Used-Equipment Dealer, Kitchener
The situation — A used-equipment dealer, Kitchener, Ontario
A used-equipment dealer in Kitchener, Ontario was weeks away from the deadline for GST/HST return adjustment. Behind that sat a commercial property purchase closed on the assumption no tax applied because the vendor was not registered. The exposure if the date slipped was around $20,000.
What we did for A used-equipment dealer, Kitchener, 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. The filing went in complete rather than provisional, so there was no amended return to follow.
The result — A used-equipment dealer, Kitchener, Ontario
Filed with 21 days to spare. $20,000 in late-filing penalties avoided, and the working papers are ready for the following year.
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.
