Extraordinary expenses in child support are substantial costs for a child that fall outside everyday food, housing, and clothing, and most court orders require both parents to share them on top of the base support payment. Typical examples include uninsured medical and dental bills, private or special-needs schooling, work-related childcare, and high-cost activities. Whether you actually get reimbursed for your share usually comes down to four things: the expense fitting a category your order recognizes, getting pre-approval when the order requires it, keeping clean documentation, and following the enforcement path if the other parent refuses to pay.
What Counts as an Extraordinary Expense
What qualifies depends on the specific court order, but most orders recognize the same broad categories. Reasonableness also depends on both parents’ financial situations.
Uninsured Medical and Dental Costs
These are the most common extraordinary expenses. Health insurance premiums are usually built into the base support calculation, but out-of-pocket costs are handled separately. Federal regulations define “cash medical support” as an amount ordered to cover health insurance costs or other medical costs not covered by insurance.1eCFR. 45 CFR 303.31 – Securing and Enforcing Medical Support Obligations Braces, surgery, counseling, physical therapy, prescription eyeglasses, and specialized medications all fall here.
Under federal regulations, the cost of medical support is generally considered “reasonable” if it does not exceed five percent of the responsible parent’s gross income.1eCFR. 45 CFR 303.31 – Securing and Enforcing Medical Support Obligations States can set their own income-based threshold, so check what standard applies to your order.
Educational Costs
Private school tuition can qualify when it meets a specific educational need for the child. Specialized tutoring, test preparation fees, and special-needs education costs also commonly qualify. Courts look at whether the expense is necessary for the child’s particular educational requirements, not whether a parent simply prefers a more expensive option.
Activities and Work-Related Childcare
Fees for competitive sports leagues, travel teams, and private music or art lessons can qualify when the costs go well beyond typical recreation. Childcare that a parent needs in order to work is also commonly included, provided the cost is reasonable and serves the child’s best interest.
How the Cost Gets Split Between Parents
The default in most orders is a pro-rata split: each parent pays the percentage of the expense that matches their share of the combined household income. If one parent earns $60,000 and the other earns $40,000, the higher earner covers 60% of each extraordinary expense and the lower earner covers 40%. Those percentages usually come from the Child Support Obligation Worksheet already on file, so they are set before any specific expense comes up.
Parents can agree to other arrangements. Some split everything 50/50 when incomes are close. Others divide by category, with one parent handling medical and the other handling education. What controls is the language in the court order or separation agreement. An informal side deal will not hold up if the arrangement later breaks down.
Get Pre-Approval Before You Spend
Most reimbursement fights start here. Many court orders require the parents to agree on an extraordinary expense before it is incurred. If your order has a pre-approval clause and you skip it, the other parent has a strong argument that they should not have to pay their share, and judges often agree. Some orders go further and state explicitly that failing to get advance agreement can bar reimbursement entirely.
The safest approach is a written request to the other parent before you commit. Describe the cost, explain why it is necessary for the child, and include any estimates or quotes. Text or email is fine as long as you save the record. If the other parent agrees, hold onto that confirmation. If they refuse and you still believe the expense is necessary, ask the court to decide before spending, unless it is a genuine emergency like urgent medical care.
What to Keep so You Can Be Reimbursed
To be reimbursed, you need to prove two things: what the expense was, and that you actually paid it.
For the expense, keep the original itemized receipt or invoice showing the date of service, a description of what was provided, the child’s name, and the total. For ongoing costs like orthodontic work, keep the contract with the payment schedule and a final statement showing the balance paid.
For payment, keep credit card statements, debit receipts, canceled checks, or bank statements showing the withdrawal. A bill on its own is not enough; the other parent and any judge need to see money leaving your account. If insurance was involved, keep the explanation of benefits showing what insurance covered and what you paid out of pocket.
Build the habit early. A digital folder for each child, with every receipt, statement, and message dropped in as costs come up, is far easier than reconstructing records months later when a dispute is already brewing.
Asking the Other Parent, Then the Court
Start with a written request. Keep it professional, itemize each expense, and attach the receipts and proof of payment. Email works and creates its own record; certified mail adds formal proof of delivery. Most orders spell out a response deadline, commonly 30 days, so wait out that window before escalating.
If the other parent refuses or ignores the request, the next step is a motion filed with the court that issued the original support order. Depending on the jurisdiction it is called a motion for enforcement or a motion for reimbursement. The court schedules a hearing where both parents present their case. Bring organized copies of the order showing the expense-sharing terms, your pre-approval communications, the receipts, and the proof of payment. If the judge finds the expenses valid and the other parent in violation, the court will issue a judgment for the amount owed. Filing fees are generally modest, and many jurisdictions waive them for child support matters.
Enforcement When a Parent Still Won’t Pay
Federal law requires every state to maintain enforcement mechanisms for child support obligations, and these apply to orders covering extraordinary expenses too.2Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement Income withholding takes payments directly from the paying parent’s wages. Liens can attach to real estate and personal property. States report delinquent parents to credit bureaus, and they can suspend driver’s, professional, and recreational licenses. State tax refunds can be intercepted. A judge can also hold a non-paying parent in contempt, which can bring fines or jail time for repeated refusal.
These remedies run through your state’s child support enforcement agency, and in many cases you do not need a private attorney to access them. Contact the agency handling your case to find out which tools are available and how to request enforcement.
Tax Angles Worth Knowing
Child support payments, including reimbursements for extraordinary expenses, are not taxable income for the parent who receives them and not deductible for the parent who pays.3Internal Revenue Service. Alimony, Child Support, Court Awards, Damages 1 The underlying spending, though, can still qualify for separate tax benefits.
Medical Expenses
Federal tax law treats a child of divorced or separated parents as a dependent of both parents specifically for the medical expense deduction.4Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses Each parent can deduct the medical expenses they personally paid, regardless of which parent claims the child as a dependent for other tax purposes. The child must be in the custody of one or both parents for more than half the year, must receive over half of their support from the parents, and the parents must be divorced, legally separated, separated under a written agreement, or living apart for the last six months of the year. Only medical expenses that exceed 7.5% of your adjusted gross income are deductible, so the benefit kicks in when the year’s total medical costs are substantial.5Internal Revenue Service. Publication 502 – Medical and Dental Expenses
Childcare Credit
The child and dependent care credit follows a different rule. Only the custodial parent can claim it. The IRS defines the custodial parent as the one with whom the child lived for the greater number of nights during the year. The noncustodial parent cannot claim the credit even if they paid for the childcare or claim the child as a dependent for other purposes.6Internal Revenue Service. Publication 503 – Child and Dependent Care Expenses
Who Claims the Dependent
By default the custodial parent claims the child as a dependent, but the custodial parent can release that claim in a written declaration that the noncustodial parent attaches to their return.7Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined Many divorce agreements assign this by year. It affects other credits, but it does not affect either parent’s ability to deduct medical expenses they paid.
When to Modify the Order Instead
If an extraordinary expense turns into a recurring cost, filing reimbursement requests every month creates friction and opens the door to disputes. A child who starts ongoing therapy, joins a travel team, or enters private school will generate the same expense repeatedly. At that point it is worth asking the court to fold the cost into base child support through a modification.
Courts generally require a “material change in circumstances” before modifying an order. A significant, ongoing increase in the child’s expenses qualifies, as do substantial changes in either parent’s income, custody-schedule changes, or a child aging out. The change has to be real and lasting rather than a temporary fluctuation. Most states also allow periodic reviews of support orders, commonly every three years, even without a specific triggering event.
Modification converts an unpredictable reimbursement process into a predictable monthly amount and eliminates the pre-approval and documentation burden for that expense. If you are already spending hours a month chasing the same category of cost, modifying is almost always the better path.