Is it financially worth while?

I'm currently considering moving to Houston, Texas. I know that if I were to work in the US under a TN visa, that I would still need to pay Canadian Taxes but would receive a tax credit for the US taxes paid. What I can't seem to figure out, is at the end of the day, are you financially ahead after the Canadian tax credit? Or can paying tax in both the US and in Canada be a huge financial burden?

I guess I'm just trying to get a sense of how much income tax in total I would be paying on $80,000 USD?

Thank you to anyone willing to respond!

This is actually a pretty complex thing to figure out and requires a really good accountant. It's worth spending some money on. Good luck!

Generally speaking with very rare exceptions you will pay less tax by moving your tax home to the US. It's more the bureaucracy of doing it that causes the problem. Texas in particular has no State income tax so you'll probably pay way less tax by moving your tax home to the US.

If you're going for less than one full calendar year, my personal view is that it's not worth the effort, because it's very difficult to cut residential ties to Canada for only a portion of the year and the CRA is unlikely to let you get away with that.

Also on TN-1 (unlike for example H-1B and L-1 which are dual-status) there is a requirement that your stay in the US be "temporary" which implies that you would keep your tax home abroad. However having spoken to the IRS about it, it's an incredibly confusing legal issue involving the supremacy of international treaties so I wouldn't worry about it too much, unless you get some really clever dick CBP officer who asks you that question. But from posts I've read on here it's usually a secondary question, e.g. you have US plates on your car, they ask you where you live and you say the US and then they might get around to asking you where you file taxes because they're trying to establish what your immigrant intent is. It's not that likely to come up.

Read IRS publication 519 and also this: http://www.cra-arc.gc.ca/E/pub/tg/p151/README.html