I believe my 12' utility trailer was like $12 or $16. I got pulled over twice in one day for not having a trailer tag. Once in Montgomery by a city cop who told me to take the trailer back home after I finished at Twice the Ice but I didn't then damn if 45 minutes later I didn't get pulled over my a State Trooper on Macon Cty Rt 13 as I was pulling into Hardaway. After that I bought a tag.

Yup. Don't remember how long ago it was, probably 15 years or so, but State Troopers were hammering folks coming through Clarke County on 43 for no tags, and lights, and i was one of the unfortunate one's.

I thought farm use did not require one

What are you basing your information on that a trailer tag is not required in Alabama? If not required then why did you get a ticket?

Got one for the 6x10, not worried about cost, don’t have tags on 25’ goose neck or 27’ horse trailer

When you buy a trailer new there are taxes and sone of those taxes are paid in the county you tag it in. After the initial taxes renewal is about $20 a year. With some exceptions, if you have a farm trailer they don’t need to be tagged. They also should never leave the farm property.

Wouldn't be much use for a trailer that never left the farm property.
They got wheels for a reason.

Had a state trooper write me a warning for no trailer tag on my 12ft trailer

The “farm trailer” isn’t a thing. If you have a farm tag on your vehicle, then the trailer doesn’t need a tag. If you hook the same trailer to a regular tagged vehicle, the trailer is supposed to be tagged.

Might want to check the regs hojo.

Exemptions for the Title and Tag Requirements

Boat Trailers
Farm Trailers: Trailers are used exclusively for transporting farm products to and from the market or for transporting the personal property of the farmer for his own use on the farm.
Equipment Trailers: Trailers with permanently mounted equipment, such as a crane or well-drilling equipment. The trailer is not equipped for hauling supplies.
Beginning July 1, 2009, utility trailers designed for pulling behind an automobile or pickup truck are exempt from title law. Such trailers remain subject to registration fees and taxes.
Beginning January 1, 2012, semi-trailers, gooseneck trailers, recreational trailers, and manufactured homes over 20 model years old are exempt from the title law. Currently, all 1999 and prior year model trailers are exempt. Such trailers remain subject to registration fees and taxes.

Utility trailers required for registration include, but are not limited to, open trailers for commercial equipment, personal mowers, golf carts, horse trailers, enclosed auto transporters, and tow dollies.

I think around $20 a year for small utility trailer I have. The State was cracking down on trailers with no tags and writing tickets so I figured it was cheaper and less hassle to pay $20 a year rather than a few hundred dollars ticket and deal with the hassle of it.