When you review your business accounts each month, major expenses like rent, payroll, and inventory are hard to miss. But when tax season arrives, it is usually the smaller, everyday costs that slip through the cracks.

Missing these deductions means your corporation is paying more tax than necessary—leaving money on the table that could otherwise be reinvested into your company’s growth.

Here are three commonly overlooked business expenses you should be tracking.

1. Tracking Business Travel Accurately

If you use your personal vehicle for business tasks—like visiting clients, picking up supplies, or meeting with vendors—your corporation can claim those kilometres. However, the Canada Revenue Agency (CRA) reviews vehicle claims closely.

Their primary requirement is straightforward: you must keep an accurate logbook.

A rough estimate or a ballpark percentage calculated at the end of the year will not stand up during a tax review. If your deductions are questioned, the CRA expects to see a clear history of your travel.

For every business trip, your records should show:

• The date of the travel
• The destination and business purpose
• The exact kilometres driven

How to handle it: Instead of trying to piece your schedule back together at the end of the fiscal year, use a mileage-tracking app on your phone. These tools log your drives automatically in the background, ensuring you have the exact documentation you need if the CRA ever asks for proof.

2. Company-Paid Training and Education

Many business owners forget that investing in their own skills is a legitimate business expense. If you take a course, attend a conference, or earn a certification that helps you run your business more effectively, your corporation can pay for it.

Because this training directly maintains or improves your ability to manage your operations, it qualifies as a tax deduction.

This includes expenses like:

• Industry Conferences: Staying updated on market changes and networking.
• Technical Workshops: Learning new software or operational tools.
• Management Courses: Developing leadership or scaling strategies.

When your corporation pays for your professional development, you get to upgrade your skillset while simultaneously lowering your company’s taxable income.

3. Writing Off Assets Through Capital Cost Allowance (CCA)

When you buy a new laptop, a smartphone, or office furniture, you generally cannot deduct the entire purchase price in the year you bought it. Instead, you must use the Capital Cost Allowance (CCA) system.

If you purchased new equipment, vehicles, or property for your business, you need:

• Asset Description: The make, model, or clear identifier (e.g., 2026 MacBook Pro).
• Dates: The exact purchase date and the “available-for-use” date (when it was actually ready to be utilized).
• Total Capital Cost: The total amount paid to get the asset operational. This includes:
  • The purchase price (minus any rebates).
  • Delivery, shipping, and freight fees.
  • Installation and assembly costs.
  • Note: If you are a GST/HST registrant, you must subtract the sales tax amount you are getting back as an Input Tax Credit (ITC).
• Government Grants: The value of any subsidies or financial assistance received to buy the asset (which must be subtracted from the total cost).

This is simply the tax process for spreading the cost of a long-term asset over its useful lifespan. Because items like computers and furniture last for several years, the CRA requires you to claim a specific percentage of their value each year rather than writing off the full amount all at once. It provides a steady, multi-year tax deduction as your equipment naturally ages and depreciates.

Simple Steps to Prep for Your Accountant

To make sure you actually capture these savings without creating extra paperwork at year-end, try setting up these three habits:

Task	Action	Benefit
Log Your Trips	Set up a tracking app like MileIQ or QuickBooks.	Automatically builds a permanent record of your business kilometres.
Organize Education Receipts	Create a specific folder in your email or cloud drive for courses and books.	Keep all professional development receipts in one place so they aren’t forgotten.
List Equipment Purchases	Keep a simple spreadsheet of any tech or furniture bought during the year.	Helps your accountant quickly apply the correct depreciation rates.

Keeping Your Capital in the Business

Managing corporate taxes does not have to be overly complicated. By paying attention to these smaller, routine expenses, you can keep more money inside your business to help fuel your next stages of growth.

Take a few minutes to look back over your calendar and credit card statements from the past year. If you find unclaimed courses, business trips, or equipment purchases, gather the receipts and discuss them with your accountant to make sure you get the credit you deserve.