Filed CT winnings with RI - what form is required to alert CT

[TomD8]

If these are non-lottery gambling winnings and you are a non-resident of CT, the winnings are not subject to CT income tax. https://portal.ct.gov/DRS/Publications/Informational-Publications/2011/IP-201127-Connecticut-Income-...

If these are CT lottery winnings, they may be taxable to a non-resident.  You'll find the details here:  https://portal.ct.gov/DRS/Publications/Informational-Publications/2015/IP-201523-Connecticut-Income-...