Entertainment Love and Romance Factor "Extras" into Your Child Support Payments Mandatory and Discretionary Additions to Regular Child Support Payments Share PINTEREST Email Print Camille Tokerud/Stone/Getty Images Love and Romance Divorce Relationships Sexuality Teens LGBTQ Friendship By Debrina Washington Family law attorney and writer University of Pittsburgh School of Law Skidmore College Debrina L. Washington is a New York-based family law attorney and writer, who runs her own virtual practice to assist single parents with legal issues. our editorial process Debrina Washington Updated February 15, 2017 In addition to a standard child support calculation, many states will either require a non-custodial parent to pay a share of additional expenses, associated with child rearing (mandatory) or order additional expenses at his or her discretion (discretionary). Mandatory Additions to the Child Support Formula Mandatory additions may include: Healthcare expenses that are not covered by health insuranceChild care expenses incurred while the custodial parent is working or attending school or job training, which are often pro-rated to the same extent as determined by the child support formula Discretionary Additions to the Child Support Formula Discretionary additions may include: Educational expenses such as post-secondary, private school, special education, or college tuitionChild care expenses while the custodial parent is at work or seeking employment Often courts will not order any additions to the basic child support formula if a non-custodial parent's income is too low to warrant any additions. In that case, a court will only order a non-custodial parent to pay their share of the basic child support formula. Each state has their own laws governing child support, so be sure to learn more about your state's regulations on their websites or from a lawyer local to the case.