When I compare State and Provincial budgets on a per-capita basis (ie adjusted for population) I don't see lower budgets with economies similar to SK. I've looked at many State budgets over the years (MN, Montana) similar to SK economically and others as well. I see no evidence we pay more taxes than other jurisdictions, and include health care (about $C 5,500 per capita). Individual taxes (Income Tax, Provincial Sales Tax) comprise about 20% of the budget revenue. The majority of income comes from resource royalties. I'm not sure of N Dakota's rate for oil but I do know SK is lowest in Canada and is lower than AK, TX.
Eg: North Dakota
Pop 755,000
State Budget $US 13,277,000,000
$US 17,579.00 per person [$C 22,913.00 per person]
Saskatchewan
Pop 1,162,000
Provincial Budget $C 14,610,000,000
$C 12,565 per person [$US 9,639.00 per person]