What if I want my child support to end if my daughter gets married?

You may also contract for this. You can specify whatever terms of emancipation you like, so long as they are not illegal or void as against public policy. Again, if this is your intent, be explicit in your language of the particular clause. Your lawyer can assist you in writing the language with sufficient specificity. Typically child support is set to end once the child reaches the age of majority (18 or 21), upon the completion of a secondary education, joining the armed or military forces, getting married, or choosing to become independent and self supporting.