Track Refunds
Federal refund
https://www.irs.gov/refunds
Federal refund for amended returns
https://www.irs.gov/filing/wheres-my-amended-return
Missouri refund
https://dors.mo.gov/tax/taxinq/welcome.jsp
Arizona refund
https://www.aztaxes.gov/Home/CheckRefund
Colorado refund
https://www.colorado.gov/revenueonline/_/#1