IRS Where’s My Refund?
http://www.irs.gov/Refunds

Michigan Individual Tax Return Status
https://www.michigan.gov/taxes/0,1607,7-238-43513-157514–,00.html

Tax Calendar for Business & Self-Employed
http://www.tax.gov/calendar/

Social Security Administration
http://www.ssa.gov/

Electronic Federal Tax Payment System
https://www.eftps.gov/eftps/

Michigan Business One Stop
http://www.michigan.gov/business

Michigan Department of Treasury
http://www.michigan.gov/taxes