https://marylandtaxes.gov/RELIEFAct/Electronic-Press-Kit-RELIEF-Act.php According to the tax act that they printed out a while ago it says it's not the final authority but this form if you click the link above clearly states 502LU, for grants. Unfortunately I don't see it in the forms so get creative and do the 502CR or 502SU or even get creative with the allocation worksheet. We would understand that but whoever is sitting on the other side when it's received may not.