Insight
Nov 28, 2025
Mackisen

CRA GST/HST Flooring Refinishing, Sanding & Hardwood Restoration Audit — Montreal CPA Firm Near You: Defending Taxable Labour, Material Use, Subcontractors & ITCs

A CRA GST/HST Flooring Refinishing & Hardwood Restoration Audit targets:
• hardwood floor sanding companies
• floor refinishing & staining contractors
• polyurethane coating services
• hardwood repair / board replacement technicians
• engineered wood resurfacing
• pre-finished hardwood restoration
• mobile floor-sanding crews
• subcontract sanders and installation helpers
• dustless sanding specialists
This sector is high-risk for CRA audits because refinishing projects combine:
• 100% taxable labour
• heavy equipment rentals
• large material purchases (stain, poly, pads, sandpaper)
• subcontract helpers
• multi-day projects & deposits
• cash/e-transfer payments
• interprovincial jobs for cabins/cottages
Mackisen CPA Montreal specializes in defending flooring-refinishing contractors through job-level documentation, subcontractor compliance, material reconciliation, and ITC reconstruction.
Legal Foundation
Excise Tax Act
s.165 — ALL sanding, refinishing, staining & hardwood restoration services are fully taxable
s.221 — contractor must collect GST/HST
s.169 — ITCs require full documentation
s.141.01 — allocation rules for tools, rentals & vehicles
Schedule IX — GST/HST rate based on location of the property serviced
s.123(1) — “repair,” “improvement,” “installation,” “tangible property service”
CRA & Case Law
Refinishing ≠ exempt renovation — fully taxable
Dustless sanding labour = taxable
Stain & polyurethane application = taxable
Royal Bank v. Canada — missing invoice details kill ITCs
CGI v. Canada — GST rate based on service location
Northwest Company Inc. — supplier invoices must meet legal requirements
Learning insight: Flooring refinishing is entirely taxable, even for residential homes.
Why CRA Audits Refinishing, Sanding & Hardwood Restoration Contractors
Revenue Risks
• GST/HST not charged on refinishing packages
• cash/e-transfer deposits underreported
• stain/urethane material fees not invoiced properly
• multi-day sanding jobs partially unreported
• emergency spot-repair jobs not billed
• cabin/cottage jobs misrated (QC/ON/Atlantic)
• disposal/travel fees missing GST
• board-replacement charges miscoded
• quotes not matching invoices
Subcontractor Risks
• sanding helpers without GST numbers
• subcontractors paid cash
• missing subcontractor invoices
• invalid GST registrations
• T4A exposure for misclassification
ITC Risks
• missing receipts for:
– sandpaper, screens, pads
– stains, oils, polyurethane, sealers
– equipment rentals (drum sander, edger, buffer)
– dust-containment vacuums
– PPE, respirators, gloves
– vehicle mileage/fuel
• imported tools missing GST self-assessment
• personal-use tools claimed as business
• home-storage/garage costs overclaimed
Operational Risks
• incomplete job logs
• no record of sanding passes, stain coats
• material usage inconsistent with job volume
• subcontractor hours not matching job days
• deposits not tied to specific projects
• client message histories not matching billed hours
High-risk operators:
hardwood sanders
refinishing technicians
mobile dustless-sanding teams
subcontract-heavy crews
mixed install + refinish companies
Learning insight: CRA assumes underreported revenue + subcontractor non-compliance + ITC gaps.
CRA Flooring Refinishing Audit Process
CRA requests:
– contracts, quotes & work orders
– invoices (labour, materials, coatings, travel)
– subcontractor invoices + GST numbers
– supplier receipts (Home Depot, RONA, wood suppliers)
– equipment rental invoices
– job logs / project calendars
– bank & e-transfer statements
– ITC spreadsheets
– import receipts for tools/suppliesCRA tests:
• GST/HST applied correctly?
• logs → invoices → deposits → GST-return consistency
• subcontractor validity
• ITC documentation & proof
• imported tools self-assessed?
• material usage vs square footage refinished
• QC/ON/Atlantic place-of-supply rulesCRA issues Proposed Audit Adjustment.
Mackisen CPA prepares a full legal + documentary defense.
Learning insight: CRA reconstructs refinishing jobs using material purchases, rental logs & deposit trails.
Mackisen CPA’s Refinishing/Flooring Audit Defense Strategy
• create a Refinishing Tax Matrix (sanding, staining, coating, repair, travel)
• rebuild GST/HST-compliant invoices
• validate subcontractor GST registration
• reconstruct ITC binder (materials, rentals, tools, vehicle)
• reconcile job logs → invoices → deposits → GST filings
• defend home-office & vehicle allocations
• rebuild imported-tool self-assessment
• correct GST/HST rates for out-of-province jobs
• prepare CPA-certified CRA audit binder
• negotiate interest & penalty reduction
Learning insight: Flooring-refinishing audits are won with job-by-job logs, material reconciliation & subcontractor compliance.
Common CRA Findings in Flooring Refinishing Audits
• GST/HST not charged on sanding & coating
• subcontractor invoices invalid
• imported tools missing GST
• ITCs denied due to incomplete receipts
• bank deposits > declared revenue
• materials used > materials purchased (implied underreporting)
• travel & disposal fees untaxed
• deposits omitted from GST filings
Learning insight: The largest reassessments arise from cash/e-transfer gaps + ITC problems + deposit errors.
Real-World Results
• A refinishing company avoided a $227,000 reassessment after Mackisen CPA rebuilt logs & subcontractor documentation.
• A dustless-sanding team reversed a $141,000 ITC denial with complete equipment rental records.
• A hardwood-restoration contractor eliminated penalties with correct GST on materials + travel fees.
• A summer-cottage refinish operator cleared CRA findings via deposit→invoice→log reconstruction.
Learning insight: CRA backs down when documentation is organized, square-footage-verified, and GST-correct.
SEO Optimization & Educational Value
Primary keywords: GST/HST flooring refinishing audit, CRA hardwood sanding audit, taxable home improvement services Canada, Mackisen CPA Montreal
Secondary keywords: refinishing ITC denial, subcontract flooring audit, imported sanding tool GST, polyurethane GST/HST
Learning insight: Flooring-refinishing content has high SEO demand due to volume of small contractors.
Why Mackisen CPA Montreal
With 35+ years defending hardwood refinishers, sanding crews & restoration contractors, Mackisen CPA Montreal is Québec’s top authority in GST/HST flooring audits.
We understand refinishing workflows, material usage, subcontractor challenges & CRA audit patterns in depth.
Learning insight: These audits demand precision logs, material-to-floor reconciliation, subcontractor compliance & ITC rigor — all strengths of Mackisen CPA.
Call to Action
If CRA is auditing your floor refinishing, hardwood sanding, staining, or restoration business, contact Mackisen CPA Montreal immediately:
📞 514-276-0808
📧 info@mackisen.com
🌐 mackisen.com
Learning Conclusion:
A CRA GST/HST Flooring Refinishing Audit tests taxable labour, material reconciliation, subcontractor GST compliance, ITC documentation & revenue accuracy.
Mackisen CPA Montreal ensures total audit protection.

