Calculation of the Amount Payable

The amount of your instalment payments is determined using one of the methods below.

Method 1: No-calculation method

We determine the amount of your instalment payments based on the information in your income tax returns for the two previous taxation years. This amount is indicated on the copy of form TPZ-1026.A-V, Instalment Payments Made by an Individual, that we send you.

Method 2: Previous-year method

This method allows you to determine the amount of your instalment payments yourself, based on the amount of your net income tax payable and contributions for the previous year.

Method 3: Current-year method

This method allows you to determine the amount of your instalment payments yourself. It may be to your advantage to choose this method if you expect your net income tax and contributions payable for the current year to be lower than for the previous year.

To do the calculation using method 2 or 3, use form TP-1026-V, Calculation of Instalment Payments to Be Made by Individuals.

Interest on overdue instalments

We charge interest, compounded daily, on any instalment (or portion thereof) not paid by the due date. If you paid less than 75% of the required instalment, additional interest of 10% per year, compounded daily, is charged on the unpaid portion of the instalment.

If you use method 1 and you make the payments indicated on the form by the due dates, no interest will be charged, even if the amount of the payments subsequently proves to be insufficient.

If you use method 2 or 3 and the amount of your payments subsequently proves to be insufficient, you may be charged interest.

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