Troubleshooting

When I print out my tax return to PDF, I can see the issue in the T1. 

 

On line 131 (federal tax 40600), I have an amount of $40k.

There are no amounts in boxes 132, 133, 134 nor 135.

On line 136 (which is defined as line 131 less line 135), this should equal $40k since line 135 is zero.

However, on line 136 (net federal tax 42000) my tax owing goes up to $62k.

 

I have no idea how my taxes went from $40k to $62k???