Hello @stephen4au
Since I don't have all the details of your tax return, it is hard to say, but I am suspecting that the amount calculated at line 41700 is different because Alternative Minimum Tax from form T691 applies to your situation. Please review the details of that form (T691).
https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...
https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...
Thank you,
Magalie
