6 worked GST/HST Nil Return 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 nil return work, not a specific client's file.
Case Study 1 · Scaling without breaking
Second-Province Expansion Handled, $122,000 Of Cash Released — Mixed-Supply Practice, Mississauga
Client: A professional practice with exempt and taxable supplies · Where: Mississauga, Ontario · Engagement: 11 weeks, fixed fee
Cash released$122,000
New registrationsComplete on day one
Compliance gapsNone
The situation — A professional practice with exempt and taxable supplies, Mississauga, Ontario
Revenue at a professional practice with exempt and taxable supplies in Mississauga, Ontario 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 professional practice with exempt and taxable supplies, Mississauga, Ontario
We backdated the registration to the day the threshold was crossed, remitted the tax owing, and applied for relief on the penalty portion. Every new obligation — registration, remittance frequency, provincial filing — was set up before it was triggered, not after.
The result — A professional practice with exempt and taxable supplies, Mississauga, Ontario
$122,000 of cash was released from the working capital cycle, and the expansion completed with every registration and filing obligation covered from day one.
Case Study 2 · Cash and remittance control
$90,000 Of Working Capital Freed From The Tax Cycle — Interprovincial Construction Supplier, Saskatoon
Client: A construction supplier selling into three provinces · Where: Saskatoon, Saskatchewan · Engagement: 9 weeks, fixed fee
Working capital freed$90,000
On-time remittancesEvery period since
Forecast horizon13 weeks
The situation — A construction supplier selling into three provinces, Saskatoon, Saskatchewan
A construction supplier selling into three provinces in Saskatoon, Saskatchewan was profitable on paper and short of cash every month. Input tax credits claimed on the exempt side of a mixed-supply business explained most of the gap.
What we did for A construction supplier selling into three provinces, Saskatoon, Saskatchewan
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 and built a thirteen-week cash view so tax payments stopped competing with payroll for the same dollars.
The result — A construction supplier selling into three provinces, Saskatoon, Saskatchewan
$90,000 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 3 · Deadline rescue
5-Week Turnaround Beat The Deadline And Saved $28,500 — Freight Brokerage, Victoria
Client: A freight brokerage · Where: Victoria, British Columbia · Engagement: 5 weeks, fixed fee
Late-filing penalty avoided$28,500
Filed with9 days to spare
Next yearPapers ready
The situation — A freight brokerage, Victoria, British Columbia
With the deadline for gst/hst nil return weeks away, a freight brokerage in Victoria, British Columbia was carrying export sales zero-rated with no shipping documentation behind them. The exposure if the date slipped was around $28,500.
What we did for A freight brokerage, Victoria, British Columbia
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. The filing went in complete rather than provisional, so there was no amended return to follow.
The result — A freight brokerage, Victoria, British Columbia
Filed with 9 days to spare. $28,500 in late-filing penalties avoided, and the working papers are ready for the following year.
Case Study 4 · Structure rebuilt
Holding Structure Added, $57,000 Saved Annually — Digital Platform Seller, Toronto
Client: A platform seller collecting tax at checkout · Where: Toronto, Ontario · Engagement: 6 weeks, fixed fee
Annual saving$57,000
ReorganisationTax-neutral
StructureMatches operations
The situation — A platform seller collecting tax at checkout, Toronto, Ontario
A platform seller collecting tax at checkout in Toronto, Ontario was carrying a sales tax account filed annually while the CRA had moved the business to quarterly, and every option for fixing it ran through a reorganisation that had to be done without triggering tax.
What we did for A platform seller collecting tax at checkout, Toronto, Ontario
Working with the client's lawyer, we set a defensible input tax credit allocation between taxable and exempt supplies and documented the method for future filings and prepared the elections, resolutions and valuations the structure needed to stand up.
The result — A platform seller collecting tax at checkout, Toronto, Ontario
The structure now matches the business. Annual saving of $57,000, and the reorganisation itself was tax-neutral.
Case Study 5 · Sale and succession
Share Sale Restructured, $460,000 Less Tax On Closing — Used-Equipment Dealer, Hamilton
The situation — A used-equipment dealer, Hamilton, Ontario
A used-equipment dealer in Hamilton, Ontario was preparing to sell. Due diligence surfaced retained cash well above what the business needed to operate, which would have reduced the price or killed the deal outright.
What we did for A used-equipment dealer, Hamilton, Ontario
We cleaned up the historical file, 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, and prepared the due-diligence package the buyer's advisers actually asked for.
The result — A used-equipment dealer, Hamilton, Ontario
The deal closed at the agreed price. $460,000 of tax was saved against the structure originally proposed, with no post-closing adjustment.
Case Study 6 · CRA review defended
$84,000 Reassessment Reduced To Nil On Review — Late GST/HST Registrant, Regina
Client: A seller who crossed the registration threshold before registering · Where: Regina, Saskatchewan · Engagement: 3 weeks, fixed fee
Reassessment reduced toNil
Tax protected$84,000
Prior filingsUndisturbed
The situation — A seller who crossed the registration threshold before registering, Regina, Saskatchewan
A review notice arrived at a seller who crossed the registration threshold before registering in Regina, Saskatchewan covering gst/hst nil return for two tax years. The auditor's working position was an adjustment of $84,000, driven by a commercial property purchase closed on the assumption no tax applied because the vendor was not registered.
What we did for A seller who crossed the registration threshold before registering, Regina, Saskatchewan
Rather than negotiate, we rebuilt the record. We rebuilt the sales ledger by customer province, applied the correct place-of-supply rate to each stream, and filed corrected returns before the CRA opened a review and submitted a point-by-point response that answered each proposed adjustment with the document behind it.
The result — A seller who crossed the registration threshold before registering, Regina, Saskatchewan
The auditor accepted the documented position and closed the review without adjustment, protecting $84,000 and leaving the prior filings undisturbed.
Reviewed for the 2025 tax year by Udit Gupta, Founder and Tax Accountant. 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.
