Bookkeeping Tips for Contractors in Durham Region

Contractor bookkeeping is different from basic bookkeeping because every job can have different labour, materials, equipment, subcontractor and HST implications. Without a clean system, it is difficult to know whether each project is actually profitable.

1. Separate business and personal spending

Use dedicated business bank accounts and credit cards. This makes monthly reconciliation faster and avoids confusion when preparing tax-ready records for your accountant.

2. Track job-related expenses carefully

Materials, fuel, tools, equipment rentals, subcontractors and permits should be categorized properly. This helps you understand job profitability and quote future work more accurately.

3. Stay current with HST

Many contractors collect HST and also pay HST on expenses. Organized records make filing easier and reduce the risk of CRA penalties. If you pay subcontractors, you may also need to issue T4A slips.

4. Reconcile monthly — not at year-end

Waiting until year-end creates stress and costs more. Monthly bookkeeping gives you better visibility, helps avoid missed expenses, and keeps your CRA records current.

5. Use clean reports to quote better

When you know your real labour, material and overhead costs, your quotes become more accurate. Clean bookkeeping helps you avoid underpricing jobs — one of the most common mistakes contractors make.