If I moved to another state mid year do I have to send something by mail to my previous state?

[DavidS127]

It depends on whether the state you lived in before you moved requires you to file a tax return.

Some states don't have state income taxes, so if you moved from  Alaska, Florida, Nevada, South Dakota, Texas, Washington or Wyoming you aren't required to file a tax return.  Tennessee only taxes investment income.

For other states, you may be required to file a "part-year resident" state tax return if you had income while you lived there and it was high enough to require a filing.  Also, keep in mind that if you had state tax withheld in a state, you may be able to get a refund of that withholding even if you don't owe taxes and aren't required to file a tax return.