We receive an adoption subsidy for our daughter whom came from another state to our home. We receive the monthly stipend that we received as foster parents along with she gets medicaid until she's 18. We also received 2k in travel expenses reimbursed. It depends upon the state and if the child is eligible for Title IV or in a category they give a subsidy too (such as over a certain age, sibling groups, etc..)
Try looking here for the state your are wanting info on:
NACAC | Adoption Subsidy