Canada Revenue Agency
www.cra.gc.ca
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Calculation chart for instalment payments
This chart lists the items used to calculate net tax owing (line 14). It is also used to determine your total instalment amount due (line 17) when you choose either the prior-year option or the current-year option.
To complete the chart, see your notice of assessment, notice of reassessment, or your prior-year income tax and benefit return or your estimated current-year income information, depending on the option you decide to use. Then, enter the amounts that correspond to the lines in the chart.
Note
Do not send us any income tax and benefit returns you may have completed to make your estimates.
Calculation chart
| The line references are from your income tax and benefit return, notice of assessment, or notice of reassessment. | ||
| Net federal tax (line 420) | $ | 1 |
| Old Age Security repayment (line 422) | + | 2 |
| Provincial or territorial tax (line 428) | + | 3 |
| Yukon First Nations tax (line 432) | + | 4 |
| Total payable (add lines 1 to 4) | = | 5 |
| Total income tax deducted (line 437) (Quebec residents use line 439) |
6 |
|
| Refundable abatements (line 440 plus line 441) | + | 7 |
| Refundable medical expense supplement (line 452) | + | 8 |
| Working income tax benefit (line 453) | + | 9 |
| Refund of investment tax credit (line 454) | + | 10 |
| Part XII.2 trust tax credit (line 456) | + | 11 |
| Provincial or territorial credits (line 479) | + | 12 |
| Total credits (add lines 6 to 12) | = | 13 |
| Net tax owing (line 5 minus line 13) | = | 14 |
| Canada Pension Plan contributions payable on self-employment and other earnings (line 421) | + |
15 |
| Employment Insurance premiums payable on self employment and other eligible earnings (line 430) | + |
16 |
| Total instalment amount due (add lines 14 to 16) | = $ | 17 |
