GST/HST Filing in Windsor
Windsor GST/HST filing by a licensed CPA. We calculate ITCs, determine Quick Method vs. Regular Method, file quarterly or annual returns, handle cross-border export zero-rating, auto sector supply chain ITCs, agricultural ITCs, CRA correspondence and audit defence. Office at 4387 Guppy Ct. From $150 per filing. 900+ five-star reviews.
GST/HST Filing Options for Windsor Businesses
| Filing Option | Who It Is For | How It Works |
|---|---|---|
| Annual filing | Windsor businesses with under $1,500,000 in taxable revenue. Most small businesses, sole props and new corporations. | One GST/HST return per year. Simplest option. Due 3 months after fiscal year-end. |
| Quarterly filing | Windsor businesses with $1,500,001 to $6,000,000 in taxable revenue, or businesses that choose quarterly for faster ITC refunds. | Four returns per year. Due 1 month after each quarter-end. Faster ITC refunds for businesses in a net refund position. |
| Monthly filing | Windsor businesses with over $6,000,000 in taxable revenue, or businesses that elect monthly. | Twelve returns per year. Due 1 month after each month-end. Required for large businesses. Fastest ITC refund cycle. |
| Quick Method | Eligible Windsor businesses with taxable revenue under $400,000 (including HST). Service-based businesses with low expenses. | Collect 13% from clients, remit 8.8% of HST-inclusive revenue. Keep the difference. Not available for all businesses. |
Why GST/HST Filing Matters for Windsor Businesses
Recover Every ITC
HST paid on raw materials, equipment, vehicles, rent, subcontractors and every business expense is recoverable. Windsor manufacturers and cross-border exporters frequently receive quarterly refunds from CRA.
Choose the Right Method
Quick Method (8.8%) saves money for some Windsor businesses. Regular Method saves more for businesses with high material, fuel and equipment costs. We calculate both and file the lower remittance.
Avoid CRA Penalties
Late GST/HST filing penalty: 5% of the balance owing plus 1% per month for up to 12 months. On a $20,000 HST balance, the penalty on day one is $1,000. We file on time, every time.
What Is Included in Our Windsor GST/HST Filing Service
| Included | What We Do |
|---|---|
| GST/HST return preparation and filing | We prepare and file your GST/HST return (annual, quarterly or monthly) with CRA. Every line reviewed for accuracy. |
| ITC calculation and recovery | We identify and claim every eligible Input Tax Credit: raw materials, equipment, vehicles, rent, supplies, professional fees, subcontractors, software subscriptions. |
| Quick Method vs. Regular Method analysis | We calculate both methods and file using whichever produces the lower remittance. Reviewed annually as your revenue and expenses change. |
| HST registration (new businesses) | We register your Windsor business for HST with CRA. Registration completed before your first transaction so ITCs are claimable from day one. |
| CRA correspondence and audit defence | If CRA reviews or audits your GST/HST return, we respond on your behalf. No additional fees for standard CRA correspondence. |
| Cross-border export zero-rating | Windsor businesses exporting goods across the Ambassador Bridge, Gordie Howe International Bridge or serving US clients: we configure zero-rated invoicing (0% HST) and claim full ITCs on Canadian expenses. |
Windsor GST/HST Filing: Real Client Results
Auto Parts Manufacturer, Windsor East
A Windsor Tier 2 auto parts supplier exporting 60% of production to Michigan assembly plants was charging 13% HST on US invoices. We corrected every US invoice to zero-rated, filed prior-period adjustments for 4 years and switched to quarterly filing. The combination of zero-rated export revenue and heavy Canadian material purchases produced a substantial refund position.
Greenhouse Grower, Leamington
A Leamington greenhouse operation growing tomatoes and peppers for Ontario grocery chains was not claiming ITCs on heating fuel, equipment and packaging because the produce sales were zero-rated. We confirmed full ITC entitlement on all expenses (zero-rated sales still qualify for ITCs) and recovered the missed credits from 3 years of filings.
Restaurant, Erie Street
A Windsor restaurant on UberEats and DoorDash was not claiming ITCs on delivery platform commissions. We reconciled every platform statement across 8 quarterly filings and recovered the missed commission ITCs.
IT Consultant, Tecumseh
A Tecumseh IT consultant billing US enterprise clients was using the Quick Method and paying 13% HST on all revenue. We switched to Regular Method with zero-rating on US invoices and quarterly filing. The combined savings from zero-rating, full ITC recovery and method change were significant.
How GST/HST Filing Works
Review
We review your sales, expenses and bank records for the filing period. Every transaction categorized for HST purposes.
Calculate
We calculate HST collected, ITCs claimable, Quick vs. Regular Method and net balance owing or refund due.
File
We file the return with CRA electronically. Confirmation provided. Filed 5 business days before the deadline.
Defend
If CRA reviews the return, we handle all correspondence, provide documentation and defend your ITCs.
Windsor GST/HST Filing from $150/Filing
ITCs recovered, Quick vs. Regular calculated, CRA audit defence included. T2 filed FREE for bookkeeping clients.
Why Windsor Businesses Choose Gondaliya CPA
| Feature | Gondaliya CPA | Other Providers |
|---|---|---|
| GST/HST filing fee | From $150 per filing | $200 to $500+ per filing |
| Quick Method vs. Regular analysis | Included. Both calculated every year. | Most file whatever was used last year without recalculating. |
| ITC recovery | Every eligible ITC identified and claimed. Prior-period ITCs recovered (4-year lookback). | ITCs from simple expenses claimed. Export zero-rating, raw material, fuel and cross-border ITCs frequently missed. |
| CRA audit defence | Included at no additional fee for standard reviews. | $100 to $300/hour for audit support. |
| Cross-border export expertise | Export zero-rating configured. Import HST recovery coordinated with customs broker. Ambassador Bridge and Gordie Howe Bridge documentation managed. | Many firms apply 13% to all revenue regardless of destination. Windsor businesses lose thousands in missed zero-rating annually. |
| T2 corporate tax return | FREE for every bookkeeping client. | $500 to $2,000+ additional. |
GST/HST Filing Pricing for Windsor Businesses
| Service | Fee | Includes |
|---|---|---|
| GST/HST filing (annual or quarterly) | From $150 per filing | Return preparation, ITC calculation, Quick vs. Regular analysis, electronic filing, CRA correspondence |
| HST registration (new business) | FREE | Included with every new client onboarding or incorporation |
| Prior-period ITC recovery (4-year lookback) | Included | We review the last 4 years of HST returns and file adjustments to recover missed ITCs |
| Monthly bookkeeping + HST filing | From $150/month | Bank reconciliation, expense categorization, HST filing every period, monthly financials |
| T2 corporate tax return | FREE | Filed at no charge for every bookkeeping client |
Know Your Exact Fee Before We Start
Flat fee, fixed in advance. 30-Day Money-Back Guarantee. 60-Day Fees-Matching Policy.
Our Windsor Office
Serving Windsor, Tecumseh, LaSalle, Lakeshore, Amherstburg, Leamington, Kingsville and all of Essex County. In-person and virtual appointments available.
4387 Guppy Ct, Windsor, ON N9G 2N8
Phone: (647) 212-9559
Industries We Serve in Windsor
We file GST/HST returns for Windsor businesses across every industry. Here are the sectors we serve most frequently.
GST/HST Filing for Startups
Early-stage Windsor startups: HST registration timing, ITC recovery on pre-revenue expenses, zero-rating for US clients and Quick Method evaluation.
GST/HST Filing for Healthcare
Windsor clinics and health professionals: exempt vs. taxable services, partial ITC allocation, cosmetic procedure HST and medical device zero-rating.
GST/HST Filing for Automotive
Windsor auto parts manufacturers, tool and die shops, mould makers and Stellantis supply chain: raw material ITCs, equipment ITCs, export zero-rating to US assembly plants and duty drawback coordination.
GST/HST Filing for Small Businesses
Windsor small businesses across all sectors: $30,000 threshold monitoring, voluntary registration strategy, ITC maximization and CRA audit preparation.
GST/HST Filing for Restaurants
Windsor restaurants, cafes and food service: prepared food (taxable), delivery platform commission ITCs, tip HST treatment and Quick Method evaluation.
GST/HST Filing for Agriculture
Windsor-Essex County greenhouses, farms and food processors: zero-rated basic groceries, livestock and grain, farm equipment ITCs, heating fuel ITCs and agricultural export zero-rating.
GST/HST Filing for Self-Employed
Windsor freelancers and sole proprietors: T2125 HST integration, home office ITCs, vehicle logbook ITCs and $30,000 registration threshold.
GST/HST Filing for Construction
Windsor and Essex County contractors: progress billing HST, 10% holdback calculation, material ITCs, subcontractor ITCs, new housing rebate coordination and infrastructure project compliance.
GST/HST Filing for Trucking
Windsor cross-border trucking companies: fuel ITCs, vehicle maintenance ITCs, US load zero-rating, IFTA coordination, customs broker documentation and subcontractor compliance.
GST/HST Filing for Import & Export
Windsor importers and exporters: import HST recovery at the border, export zero-rating, Ambassador Bridge and Gordie Howe Bridge documentation, customs broker coordination and cross-border ITC claims.
Frequently Asked Questions: GST/HST Filing in Windsor
Meet Your Windsor GST/HST Filing Experts
Your Windsor GST/HST returns are prepared and reviewed by licensed CPAs with direct experience across every industry we serve.

Sharad Gondaliya, CPA
Founder and Principal CPA. Oversees every GST/HST filing for Windsor clients. Specializes in cross-border export zero-rating, automotive supply chain ITCs, agricultural ITCs and CRA audit defence.

Vandana Goel, CPA
Senior CPA. Manages GST/HST compliance for Windsor automotive, construction, trucking and agricultural clients. Experienced in import HST recovery, export documentation and prior-period ITC claims.
What Windsor Clients Say About Us
900+ five-star reviews from business owners across Windsor, Essex County and Ontario.
Advanced GST/HST Strategies for Windsor Businesses
Auto Sector Supply Chain Zero-Rating
Windsor is the automotive capital of Canada. Stellantis (formerly FCA), Ford and hundreds of Tier 1 and Tier 2 suppliers operate in the Windsor-Essex corridor. Auto parts manufacturers exporting to US assembly plants charge 0% HST on every export shipment. A Windsor Tier 2 supplier with $1,200,000 in revenue and 60% US exports collects HST on only $480,000. Full ITCs on all Canadian expenses (raw steel, aluminum, tooling, equipment, utilities, rent) produce a net refund position. On $500,000 in Canadian material purchases alone, the ITC recovery is $65,000 per year. File quarterly to receive $16,000+ per quarter instead of waiting 12 months. We configure export zero-rating and quarterly filing for every Windsor automotive client at onboarding.
Ambassador Bridge and Gordie Howe International Bridge: Cross-Border Export Documentation
Windsor businesses exporting physical goods across the Ambassador Bridge or the new Gordie Howe International Bridge must maintain proper export documentation to support zero-rating claims. CRA can deny zero-rating on exports if the export documentation is incomplete. Required documentation includes: the commercial invoice showing the non-resident buyer, the customs export declaration (B13A or equivalent electronic filing), the bill of lading or proof of shipment, and evidence the goods left Canada. We ensure every Windsor exporter maintains the complete documentation package for every shipment so zero-rating claims are defensible on audit.
Greenhouse and Agricultural ITC Recovery
The Leamington-Kingsville greenhouse corridor is the largest concentration of greenhouses in North America. Tomatoes, peppers, cucumbers and cannabis produced in Windsor-Essex greenhouses for domestic and export markets are either zero-rated (basic groceries) or taxable (cannabis). Greenhouse operations spend heavily on heating fuel (natural gas), electrical systems, irrigation equipment, packaging and specialized growing equipment. All HST on these inputs is recoverable as ITCs regardless of whether the output is zero-rated or taxable. A greenhouse operation spending $400,000 per year on heating fuel recovers $52,000 in fuel ITCs. Many greenhouse operators do not claim ITCs because their produce revenue is zero-rated. This is incorrect. Zero-rated revenue qualifies for full ITCs. We recover the missed ITCs for every new greenhouse client.
Voluntary Registration Below $30,000
Windsor businesses earning under $30,000 in taxable revenue are not required to register for HST. However, voluntary registration allows you to claim ITCs on all business purchases from day one. A new Windsor tool and die shop that buys $20,000 in equipment and $8,000 in materials before the first customer order recovers $3,640 in ITCs through voluntary registration. Without registration, that $3,640 is permanently lost.
GST/HST Filing: Cities We Serve
We file GST/HST returns for businesses across every Ontario city and Canada.
GST/HST Filing in Windsor from $150/Filing. T2 Filed FREE.
Gondaliya CPA files GST/HST returns for Windsor businesses. ITC recovery, Quick vs. Regular Method, cross-border export zero-rating, automotive and agricultural ITCs, CRA audit defence. 900+ five-star reviews. Office at 4387 Guppy Ct.
