Taxes are an important factor - especially for really "top paid athletes". For instance a guy like Tiger Woods who's from California, moved to " Florida" where there is "zero State tax" Tiger makes about $ 40 million per year just from endorsements. Had he stayed in California where state taxes are very high, it would have cost him a lot of money, over the last 15-20 years. ( a huge amount)
Let's say in California the state tax is 9% of your taxable income ( could be only 5%) but we'll use 9 % for an example. I believe it's closer to 9% -"not sure"
9 % of say $ 35,000 million = $ 3,150,000 million and over 15 yrs = $ 47,250,000 million dollars -that's one big wack of money Tiger saved. Tiger's divorce cost him $ 100 million, so half was paid thru his tax savings by moving to Florida. Phil Mickelson has been threatening the state of California for a change in this tax law, or he says he'll move to Florida. He was born in California, and daughters go to school there, so he'll likely stay. You can see with hugely paid athletes how "significant" state taxes are. There are only 7 US states that have no tax-- they are Florida, Texas, Nevada, South Dakota, Alaska, Washington and Wyoming. California on the other hand, has one of the highest state taxes in the USA. Tennessee also has a very "low tax rate".
Note-You can see why this may be "very enticing" for some hockey players to play in Florida/Nevada, Tennesse, or Texas.
Look at tennis stars like Novak Djokovic, and Milos Raonic-- just 2 that I'm aware of. Both list their residences in Monaco, which is a world tax haven for the wealthy, and there is not tax period there--either "federal or state tax", Everything that you gross you also net. Even though these guys register their residence in Monaco, they don't really live there full time, but own some condo there, and I'm sure spend a little time there. I only named 2 tennis players, but there are tons of them. Novak Djokovic is from Serbia, where both federal and state taxes in a poor country like that, are likely at least around 40%-45% of your income. Djokovic makes around $ 30,000,000 mil per year. This becomes very, very significant in tax savings. For those that don't know--Monaco is in the French Riviera, and is it's own country with it's own tax laws. Milos Raonic is a tennis player from Canada, for people that don't know. Milos doesn't make near what Djokovic does, but with Canada's Provincial and Federal tax rates together running at around 49 % of your income--you can see why Raonic registers his residence in Monaco. Probably saves him around $ 1.5 to $ 2 mil per year. Raonic also owns a condo in Toronto where he's from and spends most of his time there.
I did comment on this matter last year, and I believe quite a smart businessman replied and said Manitoba taxes are in the 9 to 11 % range. I don't know if this is right, but I believe it to be close. Maybe a good accountant can provide "clarity" on this issue.
Considering what I've said above and your average Hockey Player plays 15 years, it's certainly a big economic advantage playing in a US State that has very low, or zero tax rates. You do have to consider that a Florida based player will pay the "state tax" or "provincial taxes"owing to the state he was playing in-"for road games." So if half the games are on the road-- he would only save on the 41 Home games -- but it's still significant over a 15 year period. This may affect negotiations with some US born players like Trouba.
With all the above being said -- you then have to factor in the 'cost of living" in expensive places like Florida and others before coming to a final decision. Example-cost of housing is a "big one."