So as not to hijack the other tag discussion....

We moved to Tennessee and retagged our 5 cars/trucks and 2 motorcycles and 2 trailers.  The combined cost for the various tags and associated insurance in Tn was about 1/5th of what those exact same vehicles cost to tag and insure in Alabama.  Yes, 1/5th.  And now, on our first annual renewal, the tag renewal costs $5 except for the Ford F250.

Tennessee doesn't require a tag on private utility trailers.  The chap at the DMV told me that if the trailer  never leaves Tn, forget tagging it.  However, other states require a tag, so if you're going outside the state, you should get a Tn tag to avoid confrontation with other state's LEOs.  I was able to buy a *permanent* tag for the big enclosed trailer for $100.

Property taxes are higher in Tn, but there is no income tax.