Aaron Carter can finally close the book on his DUI case from 4 years ago in Georgia -- and he's gotta be pretty happy, because he's walking away without doing a day in jail.
A court clerk from Habersham County tells TMZ ... Aaron struck a deal with prosecutors, agreeing to plea no contest to reckless driving for the 2017 stop where he refused to submit to a breathalyzer test. The DUI charge goes away.
We're told Aaron will be placed on 12 months of probation, while also having to complete 40 hours of community service and take some DUI risk reduction classes .