Case Study: Toronto Consultancy Wipes $63K HST Penalty via VDP Filing
Reviewed by Bader A. Chowdry, CPA, CA, LPA on
By Bader A. Chowdry, CPA, CA, LPA · Last updated July 19, 2026 · Reviewed July 19, 2026 · 5 min read
Quick answer: A Toronto B2B marketing consultancy grew from $150K to $2.1M revenue over 4 years but never adjusted HST filing frequency, never registered new subsidiary entities, and missed 11 quarterly filings across 3 years. Discovered during acquisition due-diligence. Voluntary Disclosures Program (VDP) filing wiped $63K in late-filing + gross-negligence penalty exposure, partial interest relief, and cleared the acquisition to close.
This is a voluntary disclosure HST Canada engagement — a consultancy whose HST exposure surfaced during acquisition due diligence.
The challenge
A Toronto-based B2B marketing consultancy grew rapidly from $150K to $2.1M annual revenue between 2020 and 2024. When acquired by a larger US-based agency in early 2025, HST due-diligence uncovered:
- Filing frequency: originally registered as annual filer at $150K revenue. Never re-elected. From 2022 forward the correct frequency was quarterly (revenue > $1.5M). CRA assigned frequency remained annual.
- Subsidiary entity: a new subsidiary corporation had been incorporated in 2023 to hold the consultancy’s US-facing revenue. No HST registration was made. $340K of taxable US-service revenue flowed through the subsidiary without HST reporting.
- Missing filings: 11 quarterly returns should have been filed under the correct assignment; zero were filed for the subsidiary; 3 annual filings for the parent were filed but under-reported by ~$18K each due to intercompany service allocation errors.
CRA’s discovered exposure would have been:
| Item | Estimated amount |
|---|---|
| Under-remitted HST | $187K |
| Late-filing penalty (4% × 12 months on parent + subsidiary) | $7,500 |
| Gross-negligence penalty (25% × understatement) | $46,750 |
| Interest at Q3-2026 rate 7% compounded daily on 3-year avg | ~$28,000 |
| CRA-side total | ~$269K |
Acquiring US agency threatened to reduce purchase price by $500K or walk from the deal.
What we did
Insight Accounting CPA — led by Bader A. Chowdry, CPA, CA, LPA — was engaged 8 weeks before target closing:
Diagnostic (week 1-2):
- Reconstructed 3 years of parent + subsidiary GL, sales ledger, and bank statements.
- Recalculated true HST liability: $187K under-remitted (with all ITCs claimed within 4-year window).
- Confirmed VDP qualifying criteria all met — voluntary (no CRA contact yet), complete (full 3-year scope), penalty-attracting, more than 1 year overdue, payment arrangement structured.
VDP filings (week 3-5):
- Form RC199 filed for parent and subsidiary jointly. Cover letter explained the fact pattern.
- Amended annual T-parent returns for 2022, 2023. Adjusted intercompany service allocation.
- First-time subsidiary quarterly returns filed for 2023, 2024, and 2025 Q1. ITCs claimed within 4-year window.
- Payment made: parent bank wire for full $187K under-remitted HST + first-year interest estimate.
Acquisition support (week 6-8):
- Wrote a CPA memo to the acquirer’s counsel confirming the VDP had been filed, the tax liability was crystallized and paid, and no unquantified HST exposure remained.
- Coordinated with the escrow lawyer to hold back a $50K contingency for any CRA reassessment above the disclosed amount.
Post-close (months 3-12):
- CRA acknowledged VDP within 3 weeks. Assigned VDP officer.
- VDP General Program acceptance letter issued 9 months later. Penalty fully waived.
“The single biggest risk in an acquisition of a services business is HST exposure the seller does not know about. A pre-close VDP filing crystallizes the number and lets the buyer close with certainty. Not filing before acquisition is the mistake — CRA can and will contact the buyer post-close, disqualifying VDP.” — Bader A. Chowdry, CPA, CA, LPA
The result
| Item | Without VDP (as CRA would have found) | With Insight Accounting CPA VDP filing | Delta |
|---|---|---|---|
| Under-remitted HST payable | $187K | $187K | $0 |
| Late-filing penalty | $7,500 | $0 (waived) | -$7,500 |
| Gross-negligence penalty risk | $46,750 | $0 (waived) | -$46,750 |
| Interest | $28,000 | $19,000 (partial relief on periods > 3 years) | -$9,000 |
| Acquisition price reduction | $500K threatened | $0 | -$500K |
| Insight Accounting CPA fee (VDP + reconciliation) | $27,000 | +$27,000 | |
| Net saved on penalty + interest | -$63,250 | ||
| Net saved on acquisition purchase price | -$473,000 net of fees |
Acquisition closed on schedule. The buyer’s due-diligence file is clean.
Relevant tax provisions
- Voluntary Disclosures Program (Information Circular IC00-1R6) — General Program vs. Limited Program tracks.
- Excise Tax Act section 280 — late-filing penalty (1% + 25% × months late).
- Excise Tax Act section 285 — gross-negligence penalty (25% of understatement).
- Excise Tax Act section 225(4) — 4-year ITC claim window.
- Excise Tax Act section 280.1 — interest at prescribed overdue rate.
- Excise Tax Act section 298 — statute of limitations (4 years; extended 6 for misrepresentation).
What this could mean for your business
If your business has grown rapidly, crossed the $1.5M or $6M frequency thresholds, added new subsidiary entities, or has any 3+ year old HST exposure — you have a VDP window today that closes the moment CRA contacts you. Pre-audit is worth 10× post-audit.
Insight Accounting CPA has filed 40+ VDP applications since 2019 across HST, T2, and payroll. Acceptance rate: 100% on files where all 5 VDP criteria were confirmed pre-filing.
Read the full HST Filing Guide Ontario pillar → Book a free 30-minute VDP review with Bader →
Frequently asked questions
Q: How much does a VDP filing cost? Insight Accounting CPA charges $3,500-$12,000 for VDP filings depending on complexity (single-year single-entity through multi-year multi-entity). ROI is typically 3-10× the fee in penalty savings.
Q: Can I use VDP if CRA has already sent me a Notice of Assessment? Only for periods and issues not covered by the assessment. If CRA has assessed HST for 2023, VDP is disqualified for 2023 but may still be available for other years or other tax programs.
Q: What if I owe more HST than I can pay? VDP includes payment or a written payment arrangement. CRA generally accepts 24-60-month arrangements for HST liabilities of the amounts commonly seen. The tax must still be paid in full over the arrangement period; interest continues.
Q: Does the VDP filing protect against criminal prosecution? Yes for the disclosed periods and issues, provided the disclosure meets all 5 criteria. This is a common motivation for high-net-worth or public-facing individual cases.
Q: How long does CRA take to decide VDP acceptance? 6-12 months from filing. Interest continues to accrue during CRA processing. The taxpayer can begin paying down the tax + interest to limit the meter running.
Composite case study — the facts are aggregated from three separate Insight Accounting CPA VDP engagements between 2023 and 2026. All client-identifying details are anonymized. The tax mechanics and outcome ranges are real. Bader A. Chowdry, CPA, CA, LPA. Insight Accounting CPA Professional Corporation, Mississauga, Ontario. This is general information for Ontario businesses. It is not tax, legal, or accounting advice for your situation. Please engage Insight Accounting CPA — or another Ontario CPA firm led by a Licensed Public Accountant — before acting.
Sources & references
- CRA Voluntary Disclosures Program — What is the VDP — https://www.canada.ca/en/revenue-agency/programs/about-canada-revenue-agency-cra/compliance/voluntary-disclosures-program/about-vdp.html.
- GST/HST for businesses — Canada Revenue Agency — https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses.html.
- Excise Tax Act, R.S.C. 1985, c. E-15 — https://laws-lois.justice.gc.ca/eng/acts/e-15/.
Important — informational only, not advice. Do not use this article to make any decision.
This article is published by Insight Accounting CPA Professional Corporation for general educational purposes only. It is not tax, legal, accounting, financial, or investment advice, and nothing in this article should be relied upon — by anyone, for any purpose — to make a business, tax, financial, accounting, legal, or investment decision.
Tax law, CRA administrative positions, court interpretations, and Ontario provincial rules change frequently, sometimes retroactively, and the content of this article may be incomplete, simplified, out of date, or wrong by the time you read it. The right answer for your specific situation depends on facts this article does not know — your structure, history, jurisdiction, filings, contracts, and goals.
Before acting, engage your own Chartered Professional Accountant or qualified advisor who has reviewed your specific circumstances in writing. Insight Accounting CPA Professional Corporation, the author, and any contributors expressly disclaim all liability — direct, indirect, or consequential — for any action taken or not taken on the basis of this content.
Insight Accounting CPA Professional Corporation is led by Bader A. Chowdry, CPA, CA, LPA — licensed by CPA Ontario under the Public Accounting Act, 2004. To engage us for situation-specific advice, book a free 30-minute discovery call.
