Calculating back time is an issue that slows down many a plea bargain. It’s not as simple as just adding up the days you were in jail. There are issues of when the warrant was issued, figuring out all the different jails you may have been in, getting those agencies to respond, and finally giving any “good time” credit the local sheriff may afford. In Kaufman County the District Attorney’s office will calculate the back for us, which is nice. In Dallas you can allegedly use their DHARMA initiative DOS computer (JI 55) to do this, but I avoid those like the plague (or like the MRSA infection that lives on those keyboards).
So if you are sitting in the county jail and looking at a plea bargain for pen time or county time how can you figure out your back time? Not by using this blog post, since I don’t know a single county jail with internet access, but I digress.
First, it depends on what kind of case you are pleading guilty to. Misdemeanor sentences are eligible for good time credit provided by the Sheriff towards any sentence. For example, in Rockwall you get 2 for 1 credit on misdemeanors. So if you get a 30 days sentence for your DWI you are out in 15. Kaufman County is day-for-day, which is nuts and serves no real purpose beyond keeping poor people in jail longer and costing local taxpayers to lock up DWI and POM offenders.