I noticed. Thanks for posting your initial response. It lead me to check how I was calculating, and I think you were right. I have addressed it now, but I'm sure this wont 100% reflect the Canadian tax calculation, but based on comparisons with other tax calculators, it seems to be coming pretty close. Where I know it will be way off is in the "additional annual income" table, as I made no effort to classify those. Everything is just considered "income" and taxed at the same federal/provincial rates.