For many self-employed Canadians, tax instalments are becoming a central part of year-round planning as the 2026 filing deadline approaches on April 30. The issue is immediate for those who may owe more than $3, 000 in net taxes in 2026, or in either 2025 or 2024, and for corporations that meet the same basic threshold.
Advisers say the point is not just paying on time. It is knowing what is owed, when it is due and how the money will be set aside so tax instalments do not disrupt cash flow.
Three ways to handle tax instalments
Soyoung Kim, senior wealth consultant with Edward Jones in Mississauga, says clients are generally presented with three options: paying the amounts shown on Canada Revenue Agency instalment reminders sent in February and August; calculating the payments based on the prior year; or calculating them based on the current year. She says the no-calculation option is generally the safest way to avoid interest and penalties.
Kim says the prior-year method is best suited to people whose income, deductions and credits in 2025 and 2026 are similar, but whose situation differs from 2024. The current-year method is better for those whose income, deductions and credits in 2026 differ from both 2024 and 2025. She recommends clients consult an accountant to determine which option fits their situation.
Why a separate account can change the game
Janine Purves, senior financial advisor with CI Assante Wealth Management Ltd. in Aurora, Ont., says setting aside money right away can create a do-it-yourself withholding system. Her approach is to move an appropriate percentage of income into a separate account, often a high-interest savings account, as soon as it arrives so funds are ready for tax instalments on March 15, June 15, Sept. 15 and Dec. 15.
Purves recommends scheduling online banking payments at least one business day before the deadline so they can be processed in time. She says some self-employed people resist that approach early in their business because they want access to every dollar they make, but the right systems from the start can help a business avoid constant catch-up.
What advisers say the habit really builds
When clients know what they owe and how they will pay for it, they feel more in control, Kim says. That control can also open the door to monthly budgeting that reflects the seasonal highs and lows of a business, rather than treating taxes as a one-time scramble.
Purves says disciplined planning can make clients more resilient when business slows or an unexpected expense hits. It can also reduce the need to rely on a line of credit to cover instalments and hope future income makes up the difference. In her view, tax instalments are not just a bill to manage; they are a way to build habits that support broader financial control.
She adds that the Canada Revenue Agency is more accommodating when someone is showing good habits and following the guidelines laid out, rather than someone who never pays an instalment, ignores the reminders and never follows up. For self-employed Canadians, that makes tax instalments a test of organization as much as a payment deadline, and a chance to stay ahead before the 2026 filing season tightens further.
