Insight
Nov 26, 2025
Mackisen

CRA GST/HST Intercompany Transactions Audit — Montreal CPA Firm Near You: Defending Management Fees, Cost-Sharing, and Related-Party Charges

A CRA GST/HST Intercompany Transactions Audit examines whether related corporations, subsidiaries, partnerships, and holding companies correctly charged, collected, remitted, or self-assessed GST/HST on intercompany services, management fees, shared expenses, reimbursements, asset transfers, and cross-entity allocations.
Because related-party transactions are frequently misunderstood — and often poorly documented — CRA audits this area aggressively, looking for unreported GST/HST, improper ITCs, or disguised commercial activity.
Mackisen CPA Montreal specializes in defending intercompany audits by analyzing corporate structure, mapping service flows, preparing GST/HST logic files, and creating CPA-certified audit binders that eliminate CRA assumptions.
Intercompany audits are one of the most frequent sources of six-figure reassessments for incorporated businesses.
Legal Foundation
Excise Tax Act
s.165 — GST/HST applies to taxable supplies of services.
s.169 — ITC eligibility requires proper invoicing & commercial intent.
s.123(1) — definitions of “consideration,” “supply,” and “related persons.”
s.155 — special rules for transactions between related parties (value deemed at FMV).
s.141.01 — mixed-use and allocation rules.
Case Law
GlaxoSmithKline — arm’s-length principles influence related-party analysis.
Royal Bank v. Canada — documentation standards must be precise.
General Motors — GST/HST on reimbursements depends on substance, not labels.
Learning insight: CRA applies substance over form — it cares what actually happened, not how you named it.
Why CRA Audits Intercompany Transactions
CRA initiates intercompany audits when it detects:
• management fees with no GST/HST charged
• shared expenses passed between companies without tax
• reimbursements that should be taxable
• holding companies claiming ITCs without commercial activity
• intercompany loans or payments disguised as services
• asset transfers without GST/HST
• cost-sharing arrangements lacking written agreements
• inconsistent reporting between related corporations
• missing invoices or traceability
• GST/HST charged but never remitted
Learning insight: CRA assumes related-party transactions hide taxable supplies unless proven otherwise.
CRA Intercompany Audit Process
CRA requests:
– management fee agreements
– intercompany invoices
– GL entries & ledgers
– proof of payment
– organizational chart
– shareholder & director information
– cost-sharing agreements
– service descriptions
– emails documenting intercompany workCRA reconstructs each transaction:
• Was it a taxable supply?
• Should GST/HST have been charged?
• Were ITCs claimed correctly?CRA tests “consideration” using FMV rules under s.155.
CRA checks whether holding companies qualify as commercial activity.
CRA issues proposed adjustments.
Mackisen CPA prepares a legal-tax rebuttal with supporting evidence.
Learning insight: Intercompany audits rise and fall on the quality of documentation and the clarity of corporate intent.
Mackisen CPA’s Intercompany Audit Defense Strategy
• map all intercompany transactions (money flow, service flow, invoice flow)
• determine whether GST/HST should apply to each related-party charge
• create intercompany service matrices detailing taxable vs exempt vs non-supplies
• defend ITCs with proper invoicing & payment proof
• defend holding company ITCs using commercial activity tests
• rebuild missing contracts and service agreements
• correct misclassified reimbursements
• prepare CPA-certified audit binders tailored to CRA requirements
• negotiate penalty and interest relief
Learning insight: The key is proving which intercompany transactions are supplies, which are reimbursements, and which are non-commercial allocations.
Common CRA Findings in Intercompany Audits
• GST/HST not charged on management fees
• reimbursements incorrectly treated as non-taxable
• holding company denied ITCs due to lack of commercial activity
• ITCs denied for lack of valid invoices
• asset transfers treated as taxable supplies
• missing documentation making transactions appear taxable
• services improperly “shared” without tax logic
• intercompany rent or property use missing GST/HST
• loans disguised as fees → GST/HST applied incorrectly
• double claiming ITCs across related entities
Learning insight: Most reassessments result from documentation gaps, missing agreements, or misclassified payments — all fully fixable.
Real-World Results
• A real estate group avoided a $740,000 reassessment when Mackisen CPA rebuilt management-fee documentation and mapped intercompany flows.
• A holding company preserved $210,000 in ITCs after we demonstrated commercial activity through active oversight, financing, and management services.
• A construction group reversed a $380,000 GST assessment when we proved certain transfers were non-supplies, not taxable services.
• A professional services group eliminated penalties when we corrected reimbursement classification and created proper service agreements.
Learning insight: CRA backs down when your intercompany narrative is clear, consistent, and backed by evidence.
SEO Optimization & Educational Value
Primary keywords: GST intercompany audit, CRA related party audit, intercompany management fee GST, Mackisen CPA Montreal
Secondary keywords: holding company ITC audit, GST reimbursements audit, related-party transaction CRA, corporate group GST audit
Learning insight: Intercompany GST/HST topics bring high search volume from incorporated businesses — clear content builds authority and leads.
Why Mackisen CPA Montreal
With 35+ years of GST/HST and corporate audit-defense expertise, Mackisen CPA Montreal is Québec’s #1 authority on intercompany GST/HST compliance.
We understand the legal definitions of supply, consideration, commercial activity, FMV rules, and reimbursement logic, and build audit files CRA respects immediately.
Learning insight: Intercompany audits are won on classification + contracts + documentation — our specialty.
Call to Action
If CRA is auditing your intercompany transactions, management fees, holding company ITCs, or related-party charges, act immediately.
📞 514-276-0808
📧 info@mackisen.com
🌐 mackisen.com
Learning Conclusion:
A CRA Intercompany Transactions Audit tests supply classification, tax logic, documentation, and commercial activity. Mackisen CPA Montreal ensures every component is defended, reconstructed, and compliant — protecting your corporate group from costly reassessments.

