Federal "Where's my Refund"
https://sa1.www4.irs.gov/irfof/lang/en/irfofgetstatus.jsp
State "Where's my Refund"
https://www.mndor.state.mn.us/tp/refund/_/#1
Sales Tax Fact Sheets
http://www.revenue.state.mn.us/businesses/sut/Pages/fact_sheets.aspx
Minnesota E-Services (pay business taxes owed)
https://www.mndor.state.mn.us/tp/eservices/_/#1
Gambling Control Board
EFTPS (pay federal taxes owed)