  Instalments and deductions at source |
Use the keyword Instal-Paid to indicate whether instalments were paid to the CRA (and the MRQ for Quebec residents) for the tax year.
The following options are applicable for the keyword Instal-Paid.
There are currently three methods available to determine the instalments of a trust:
- Government method
- Prior year option
- Current year option (estimated)
Government method (No calculation method)
This option is best if the income, deductions, and credits remain about the same from year to year. The instalment payments will be calculated as follows:
The instalments for March 15 and June 15, 2026, will each equal one-quarter of the 2024 net tax owing. For the September 15 and December 15, 2026, instalments, the total amount of the March and June 2026 instalments is subtracted from the 2025 net tax owing. The remaining amount is then divided equally for the September 15 and December 15, 2026, instalments.
Provided the payments indicated on the form are made by the due dates, no interest will be charged, even if the amount of the payments subsequently proves to be insufficient.
Prior year option
This option is best if the 2026 total instalment amount due is similar to the 2025 amount but much more or less than it was in 2024. The amount of the instalments will be calculated as follows:
Each instalment payment will be one-quarter of the 2025 net tax owing.
Current year option (estimated)
This option is best if you expect the total instalment amount due for 2026 to be more or less than it was for 2024 and 2025.
These options allow you to choose the method to be used for determining instalments based on your preference. This feature is available in the user's defaults.
To change the instalment method indicated in the user's defaults for a particular client, use the keyword InstalMethod in that client's file. This will override the user's defaults and determine the instalment method based on the InstalMethod entry now appearing in the file.
Whether or not a taxpayer is subject to instalments depends on the threshold of net tax owing.
THRESHOLD = Net-Tax-Owed
If the threshold is greater than $3,000 ($1,800 in Quebec), the inter-vivos trust is subject to instalments.
IMPORTANT
If you calculate the instalment payments yourself and they turn out to be too low, the taxpayer may have to pay interest.
The following options are applicable for the keyword InstalMethod.
Government method The instalments are based on the "no calculation method" of Revenue Canada & Revenue Quebec.
March and June instalments are calculated as 1/4 of the previous year net tax owing, excluding any revisions to that liability arising from carryback of losses, investment tax credits and similar retroactive adjustments
September and December instalments are calculated as 1/2 of the current year net tax owing, (exclusive of carryback revisions,) less March and June instalments calculated.
Prior year option The current year's earnings are used as an estimate for next year's earnings. Quarterly instalments are estimated as 1/4 of the net tax owing for this year.
Current year option (estimated)/ov The instalments are based on estimated earnings for next year. Instalment amounts are entered using the keyword Instal-Rec.
Instalments recommended /ov The tax preparer's recommendations are recorded by DT Max in the instalments schedule and on the client letter. These recommendations are entered by using the keyword Instal-Rec.
No instalment calculation Instalments will not be calculated by DT Max.
Use the keyword Amount.inst to enter the total amount of instalments paid to the CRA and Revenue Quebec for the tax year.
The following options are applicable for the keyword Amount.inst.
Federal instalments for 2025 Enter here the total amount of instalments paid to Revenue Canada for the tax year.
Federal March instalments for 2026 March instalments paid to Revenue Canada for the year following the tax year. This entry is a memo only.
Federal June instalments for 2026 June instalments paid to Revenue Canada for the year following the tax year. This entry is a memo only.
Quebec instalments for 2025 Enter here the total amount of instalments paid to Revenue Quebec for the tax year.
Quebec March instalments for 2026 March instalments paid to Revenue Quebec for the year following the tax year. This entry is a memo only.
Quebec June instalments for 2026 June instalments paid to Revenue Quebec for the year following the tax year. This entry is a memo only.
Use the keyword Amount.instal to enter the total amount of instalments paid to the CRA and Revenu Québec for the tax year, as well as any monthly payments that have been made for the following tax year.
The following options are applicable for the keyword Amount.instal.
Instalments for 2025
January 2026
February 2026
March 2026
April 2026
May 2026
June 2026
July 2026
August 2026
September 2026
October 2026
November 2026
December 2026
Because of anticipated changes in your client's income for the coming year, you may prefer to recommend the amount of instalments that should be made. Enter such recommended amounts using the keyword Instal-Rec. These will override DT Max's calculated amounts on the instalment schedule.
The following options are applicable for the keyword Instal-Rec.
Because of anticipated changes in your client's income for the coming year, you may prefer to recommend the amount of instalments that should be made. Enter such recommended amounts using the keyword InstalRec. These will override DT Max's calculated amounts on the instalment schedule.
The following options are applicable for the keyword InstalRec.
January 2026
February 2026
March 2026
April 2026
May 2026
June 2026
July 2026
August 2026
September 2026
October 2026
November 2026
December 2026
Inst-Estim estimated amount for calculation of instalment payments
The following options are applicable for the keyword Inst-Estim.
Use the keyword Estimated-Amounts when applying the current-year method to calculate instalment payments. Under this method, the instalment payments will be calculated on the current year's income, deductions, income tax source deductions and refundable tax credits.
If you anticipate changes in the client's income or deductions for the following year, use this keyword to enter estimates and to override any existing data on form TP-1026.F.
The following options are applicable for the keyword Estimated-Amounts.
Income tax payable (Q135,Q138 and Q150.1)
Tax payable on income-averaging annuity for artists (Q136)
Total income tax withheld (Q152)
Tax credit for an on-the-job training period (Q154)
Tax credit for tax paid by an environmental trust (Q156)
Tax credit for the reporting of tips (Q156)
Tax credit for SR&ED (Q153)
Tax credit for income averaging annuity for artists (Q156)
Other tax credits and other amounts deductible (Q156)
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InstalMethod