Insight
Nov 28, 2025
Mackisen

CRA GST/HST Home Appliance Repair, HVAC Repair & Maintenance Audit — Montreal CPA Firm Near You: Defending Labour, Parts, Service Calls, Subcontractors & ITCs

A CRA GST/HST Pest Control & Extermination Audit targets businesses offering:
• pest control (ants, bed bugs, roaches, mice, wasps, spiders)
• extermination services
• wildlife removal (raccoons, squirrels, skunks, birds)
• bed bug heat treatment
• rodent-proofing & exclusion work
• commercial pest management contracts
• quarterly/annual maintenance plans
• termite & structural pest treatment
• fumigation services
• emergency same-day call-outs
This industry is heavily audited because services are always taxable, involve mobile operations, significant chemical/equipment expenses, subcontractor workers, emergency cash jobs, and multi-visit contracts.
Mackisen CPA Montreal specializes in defending pest control audits through job-level documentation reconstruction, chemical purchase ITCs, subcontractor validation, and CRA-ready audit binders.
Legal Foundation
Excise Tax Act
s.165 — all pest control & extermination services are fully taxable
s.221 — mandatory GST/HST collection on service fees
s.169 — ITC documentation rules
s.141.01 — allocation rules for mixed-use tools/equipment
Schedule IX — place-of-supply rules for multi-province work
s.123(1) — “service,” “maintenance,” “extermination,” “tangible property”
Case Law
Royal Bank v. Canada — ITCs require complete evidence
Northwest Company Inc. — incomplete invoices invalidate ITCs
CGI v. Canada — province where service occurs determines rate
CRA rulings confirm: pest control is not an exempt health service → always taxable
Learning insight: There is no exemption for pest, wildlife, or extermination services — every job must include GST/HST.
Why CRA Audits Pest Control Companies
CRA flags pest-control operations when it detects:
Revenue Risks
• GST/HST missing on pest control service invoices
• emergency call-out fees not taxed
• rodent-proofing treated as exempt
• multi-visit contracts not fully reported
• cash/e-transfer payments underreported
• wildlife removal billed with missing GST
• commercial contracts inconsistent with remittances
• out-of-province residential jobs misrated
Subcontractor Risks
• subcontracted exterminators with invalid GST numbers
• helpers being paid as “contractors” without invoices
• T4A or T5018 inconsistencies
• misclassification of employees vs subcontractors
ITC Risks
• missing invoices for:
– pesticides & chemicals
– traps, nets, exclusion materials
– sprayers, foggers, bait stations
– PPE (gloves, respirators, suits)
– truck & vehicle costs
– ladders, lighting equipment
• ITCs overstated for personal-use tools
• incomplete proof of payment
• imported chemicals or sprayers missing s.218 self-assessment
Operational Risks
• job tickets not matching invoices
• wildlife captures vs release logs inconsistent
• bait-station refill logs undocumented
• emergency overnight jobs missing receipts
• chemicals purchased but not tied to jobs
• dispatch system logs vs revenue mismatches
High-risk operators:
exterminators
wildlife removal specialists
bed bug treatment crews
mobile pest control vans
subcontracted pest technicians
hotel/restaurant service contractors
Learning insight: CRA assumes underreported service revenue + invalid ITCs + subcontractor issues unless business records disprove it.
CRA Pest Control Audit Process
CRA requests:
– invoices (service + material fees)
– subcontractor invoices & GST numbers
– job dispatch logs
– bait station logs (for commercial clients)
– chemical purchase invoices
– equipment purchases
– bank statements & e-transfer logs
– ITC spreadsheets
– wildlife capture/removal logs
– multi-province job addresses
– maintenance contract detailsCRA tests:
• GST/HST charged on labour, chemicals, call-outs
• subcontractor GST registration validity
• ITC documentation & proof of payment
• revenue completeness (logs → deposits → GST filings)
• personal vs business tool/equipment
• province-of-supply rules (QC/ON/Atlantic)
• multi-visit contracts mapped correctlyCRA issues Proposed Audit Adjustment.
Mackisen CPA prepares complete legal & documentary defense.
Learning insight: CRA audits this industry job-by-job and chemical-by-chemical.
Mackisen CPA’s Pest Control Audit Defense Strategy
• create a Pest Control Tax Matrix (labour, chemicals, call-out, exclusion materials)
• rebuild GST/HST-compliant invoices
• validate subcontractor GST/HST registration
• reconstruct ITC binder for chemicals, gear & equipment
• defend vehicle + mileage ITCs using logs
• correct QC/ON/Atlantic GST/HST tax rates
• reconcile job logs → invoices → deposits
• rebuild imported-chemical self-assessment (s.218)
• prepare CPA-certified CRA audit binder
• negotiate reduction of penalties & interest
Learning insight: Pest control audits are won with log accuracy + invoice integrity + ITC discipline.
Common CRA Findings in Pest Control Audits
• GST/HST not charged on:
– service labour
– chemicals/pesticides
– call-out fees
– emergency jobs
• subcontractor invoices missing GST/HST info
• ITCs denied for invalid invoices or personal tools
• bait materials misclassified
• cash/e-transfer revenue underreported
• imported sprayers not self-assessed
• multi-province jobs misbilled
• wildlife-services expenses undocumented
Learning insight: CRA’s largest adjustments arise from invoice defects + subcontractor issues + ITC gaps.
Real-World Results
• A Montreal extermination company avoided a $214,000 reassessment after Mackisen CPA rebuilt its job logs and subcontractor documentation.
• A wildlife removal business reversed a $133,000 ITC denial after reconstructing equipment and PPE invoices.
• A commercial pest management contractor eliminated penalties by correcting GST on multi-visit maintenance plans.
• A bed bug heat-treatment firm cleared CRA findings after proper chemical purchase documentation was produced.
Learning insight: CRA backs down when confronted with CPA-organized, evidence-driven documentation.
SEO Optimization & Educational Value
Primary keywords: GST/HST pest control audit, CRA extermination audit, wildlife removal GST rules, Mackisen CPA Montreal
Secondary keywords: ITC denial pest control, subcontractor GST audit, pesticide GST treatment, emergency call-out GST Canada
Learning insight: Pest control audits are a fast-growing audit segment — high SEO value.
Why Mackisen CPA Montreal
With 35+ years defending exterminators, wildlife removal teams, and commercial pest-control firms, Mackisen CPA Montreal is Québec’s #1 authority in GST/HST pest control audit defense.
We understand chemical usage, job logs, subcontractor structures, safety equipment, and CRA methodology in depth.
Learning insight: Pest control audits require operational understanding + tax logic + airtight documentation — all strengths of Mackisen CPA.
Call to Action
If CRA is auditing your pest control, extermination, or wildlife removal business, contact Mackisen CPA Montreal immediately:
📞 514-276-0808
📧 info@mackisen.com
🌐 mackisen.com
Learning Conclusion:
A CRA GST/HST Pest Control Audit tests service taxability, chemical classification, subcontractor compliance, job logs, and ITC documentation.
Mackisen CPA Montreal ensures full protection and expert defense against reassessments.

