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Most people don’t start a business because they love paperwork. They start because they see an opportunity. Or they are tired of working for someone else. Or they want to build something of their own.
The paperwork shows up later. Usually all at once.
If you are planning to start a small business in Ontario in 2026, a bit of financial thinking up front can save you a lot of frustration down the road. You do not need to have everything figured out. You do need a few basics in place.
One of the first decisions you will face is how your business will operate legally.
Some owners begin as sole proprietors. Others form partnerships. Some incorporate right away. Each option comes with different tax treatment, different levels of personal risk, and different planning opportunities.
For example, incorporated businesses that qualify as Canadian-controlled private corporations may be eligible for the small business deduction, which applies a lower tax rate to a portion of active business income. ¹ In 2026, qualifying corporations in Ontario pay a combined rate of just 12.2% on their first $500,000 of active income – a powerful incentive for growth. For the right situation, that can make a meaningful difference over time.
There is no universal best choice. What works for one business may be wrong for another. The important part is understanding the trade-offs before you register anything.
Another early step that tends to get overlooked is opening a separate business bank account. Using your personal account for business activity quickly becomes messy. It also makes it harder to keep proper records, which the Canada Revenue Agency requires. ² A dedicated account keeps things cleaner and makes it easier to see what is happening inside the business.
Budgeting is not glamorous, but it is useful.
Startup costs often get the most attention. Ongoing expenses matter just as much. Rent, software, insurance, professional fees, marketing, and supplies add up faster than most people expect. Revenue, on the other hand, often grows more slowly. Even a simple budget forces you to look at whether your idea is financially realistic and how much cash you will need to get through the first year.
Bookkeeping should be set up early, even if your volume is low.
Good records help you track income and expenses, prepare tax filings, and understand trends. If you are registered for GST/HST, you are responsible for collecting, reporting, and remitting that tax. ³ Missing deadlines or under-remitting can lead to penalties and interest. It is important to note that, the CRA’s $30,000 threshold isn’t based on your calendar year – it’s any four consecutive quarters. Once you cross that line, you have less than 30 days to register, or you’ll be paying that 13% tax out of your own pocket for sales you’ve already made.
Taxes are another area where surprises are common.
Depending on how your business is structured and whether you hire employees, you may have obligations related to income tax, GST/HST, and payroll deductions such as CPP and EI. ⁴ These amounts should be planned for throughout the year, not dealt with only at filing time.
It is also helpful to understand how asset purchases are treated. Items like computers, equipment, and vehicles are usually deducted over time using Capital Cost Allowance. ⁵ Knowing this can affect when you choose to buy and how those purchases impact cash flow.
Cash flow deserves regular attention. A business can look profitable on paper and still struggle if money is not coming in fast enough to cover expenses. Late payments, seasonal slowdowns, and large upfront costs are common. Checking cash flow monthly allows you to spot pressure points early.
There are also government-supported resources available to new entrepreneurs. Ontario’s Small Business Enterprise Centres and the Starter Company Plus program provide training, mentorship, and, in some cases, funding. ⁶ These programs can be helpful, particularly in the planning stage.
Starting a business always involves risk and one of the biggest risks for new consultants and contractors is being classified by the CRA as a Personal Services Business (PSB).
This happens when you incorporate, but the nature of your work, your “substance”, still looks like an employment relationship. If you only have one client, use their laptop, work from their office, and follow their direct supervision, the CRA may label you an “incorporated employee.”
In 2026, the consequences of a PSB designation are intentionally punitive: While a standard small business in Ontario pays a combined tax rate of 12.2%, a PSB is hit with a “surtax,” bringing the total rate to approximately 44.5%. Additionally, unlike a regular business, a PSB cannot deduct most common expenses, which means you lose the ability to write off your home office, travel, equipment, and certain professional fees. Essentially, you are taxed on your gross revenue rather than your profit. While it’s common to start out with a single major client, property documentation needs to be in place to avoid your company being treated as a PSB.
What you can control is how prepared you are. Putting basic financial systems in place early will not guarantee success, but it will give you better information and fewer unpleasant surprises.
How Zeifmans Can Help
Zeifmans works with entrepreneurs across Ontario to support business setup, tax planning, bookkeeping, and ongoing financial management. If you are considering starting a business in 2026, speaking with an advisor early can help you avoid common pitfalls and make informed decisions from day one. Get in touch with us here for any questions you may have.
Footnotes
- Canada Revenue Agency – Business Expenses: https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/sole-proprietorships-partnerships/business-expenses.html
- Canada Revenue Agency – Keeping records
https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/keeping-records.html - Canada Revenue Agency – GST/HST for businesses
https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses.html - Canada Revenue Agency – Payroll deductions
https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/payroll.html - Canada Revenue Agency – Capital cost allowance (CCA)
https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/sole-proprietorships-partnerships/report-business-income-expenses/claiming-capital-cost-allowance.html - Government of Ontario – Small Business Enterprise Centres / Starter Company Plus
https://www.ontario.ca/page/small-business-enterprise-centre-locations | https://www.ontario.ca/page/starter-company-plus
