The adoption assistance agreement you sign is effective through the month in which your child turns 18 years old, unless terminated earlier in accordance with § 700.848 of this title (relating to When can the adoption assistance agreement and benefits be terminated before it expires?) or your child remains eligible for benefits pursuant to § 700.851 of this title (relating to How can my child qualify for extended adoption assistance benefits?).
40 Tex. Admin. Code § 700.847