The IRS and most states have a web site that allows you to access the status of your refund. You will need to have a copy of your tax return with you in order to answer the questions that they will ask you.

The url for the IRS site is: https://sa2.www4.irs.gov/irfof/lang/en/irfofgetstatus.jsp

The url for Minnesota Income and Property Tax refunds is: https://www.mndor.state.mn.us/tp/webwmr.html

The url for Wisconsin Income Tax refunds is: https://ww2.revenue.wi.gov/RefundInquiry/application

The url for California Income Tax refunds is: https://webapp.ftb.ca.gov/refund/login.aspx?Lang=en-US