Quebec tax owing amount is 4 times greater than Canadian

[QC-taxpayer]

My Quebec tax owing amount is 4 times greater than my Canadian. Most years, the amounts are very similar.

I don't know is this is relevant, but most of my income is from the CRB

 

 

[G-Hiotis]

Double check the amounts indicated as "Tax Deducted At Source" on your information slips. The totals should appear on line 437 of your federal return, and line 451 of your Quebec return. If these totals add up to the correct amount, then -- unfortunately -- not enough tax may have been deducted for Quebec.