Bookkeeping Services for Contractors in Calgary (2026)

Why Contractors Need Specialized Bookkeeping

Contractor bookkeeping in Calgary isn't the same as general small business accounting. Calgary contractors — from electricians and plumbers to HVAC and general trades — operate with complex, project-based income structures, GST obligations that require meticulous tracking, and CRA compliance risks that a generalist bookkeeper will miss. Using the wrong expense categories or failing to maintain a vehicle mileage log can cost you thousands in disallowed deductions at audit time.

• Complex expense categories: Materials, labor subcontracting, equipment rental, fuel, vehicle expenses, job-specific costs
• Project-based income: Multiple projects with different timelines, invoicing, and profitability tracking
• GST/HST complexity: Registrants must track GST collected vs. Input Tax Credits meticulously
• Vehicle & equipment tracking: Capital asset management, depreciation, CCA claims
• Home office setup: If you run the business from home, office deductions require proper allocation
• Subcontractor payments: T4A slips to subcontractors, source deductions tracking

A general bookkeeper might miss contractor-specific deductions or miscategorize expenses, costing you thousands at tax time.

Key Deductions for Calgary Contractors

Vehicle & Truck Expenses

Track business mileage separately. You can deduct:

• Fuel (actual or per-km rate)
• Insurance, registration, maintenance
• Truck loan interest or lease payments
• Repairs & parts

Pro tip: Keep a mileage log with dates, destination, and business purpose. CRA is strict on vehicle claims.

Materials & Supplies

All materials purchased for jobs are deductible — lumber, drywall, fixtures, paint, hardware, safety equipment, tools under $500. Items over $500 are capitalized and depreciated over time.

Labor Subcontracting

If you hire other trades for jobs, those costs are fully deductible. Issue a T4A to subcontractors earning $500+ and keep all invoices. If those subcontractors are actually employees under CRA's classification test, your business is responsible for unremitted source deductions — see our guide to payroll services in Calgary for how the employee vs. contractor distinction works and what it costs to get it wrong.

Equipment & Tools

Tools under $500 are expensed immediately. Tools/equipment over $500 are added to capital assets and claimed as CCA (depreciation) each year.

Home Office Deduction

If you work from a home office: deduct the percentage of home expenses proportional to office space. If your home is 1,500 sq ft and office is 150 sq ft, deduct 10% of:

• Rent or mortgage interest (not principal)
• Utilities, property tax
• Home insurance, maintenance

Other Common Deductions

• Licenses, permits, insurance
• Advertising & marketing
• Training & professional development
• Office supplies, software, subscriptions
• Accounting & legal fees

GST/HST for Calgary Contractors

Most Calgary contractors are GST-registered. Here's what you need to know:

• Threshold: Register once annual revenue hits $30,000
• Charge on invoices: Add 5% GST to all customer invoices (Alberta has GST only, no provincial HST)
• Claim ITCs: Deduct GST paid on business expenses (materials, tools, truck fuel, etc.)
• Filing: File GST returns quarterly or annually depending on revenue
• Remittance: Send collected GST minus ITCs to CRA by filing deadline

Poor GST tracking is one of the biggest sources of contractor penalties — under-remitting or over-claiming ITCs triggers assessments with interest accruing daily. For a complete breakdown of how GST registration, ITCs, and filing deadlines work, see our GST/HST guide for Calgary small businesses. Work with an accountant who knows contractor-specific GST requirements.

Best Accounting Software for Calgary Contractors

QuickBooks Online — Industry standard. Tracks projects, multiple invoices, expense categories, and GST easily. Mobile app for job site entry.

Xero — Strong alternative. Good for multi-project tracking and detailed expense categorization.

FreshBooks — Focused on invoicing & time tracking. Good for service-based contractors.

Swift Accounting can set up whichever platform works best for your business and integrate it with your bank for automatic transaction import.

Best Practices for Contractor Bookkeeping

Common Contractor Bookkeeping Mistakes

• Mixing personal & business: Makes auditing a nightmare. Keep accounts separate.
• Poor mileage tracking: CRA will disallow vehicle deductions without proper logs.
• Misclassifying expenses: Materials vs. labor, capital vs. expense — gets expensive at audit time.
• Forgetting GST tracking: Under-remitting or over-claiming ITCs triggers penalties.
• No project profitability tracking: You don't know which jobs are actually profitable.
• Delaying bookkeeping: Doing it all at year-end is stressful and error-prone.

Swift Accounting for Calgary Contractors

We specialize in bookkeeping for Calgary's incorporated contractors and trades. We understand your deductions, project-based income, GST complexity, and CRA compliance requirements. We'll:

• Set up QuickBooks or Xero for your projects
• Create expense categories matching your business
• Track GST & ITCs separately
• Maintain mileage & equipment logs
• Provide profit-by-project reporting
• Prepare for year-end accounting & tax filing

Wondering what professional bookkeeping actually costs for a contracting business? Our 2026 Calgary bookkeeping pricing guide breaks down hourly rates, monthly retainers, and what a 10-person trade business typically pays. Book a free consultation with our contractor bookkeeping team for a custom quote.