Child support covers the basics. Almost every custody order also makes both parents responsible for a share of the extras: medical bills insurance did not cover, child care, school fees, sports, tutoring, braces, summer camp. Those add-on expenses are where most co-parenting money disputes actually live, because they happen constantly, involve small amounts, and depend on both parents keeping track. Most do not. Here is how to.
Start with what the order actually says
Before you log a single expense, read the expense provisions of your order or agreement and write down the answers to these questions:
- Which categories are shared? Typically unreimbursed medical, dental, and vision; child care needed for work; and sometimes extracurriculars, school expenses, and camp.
- What is the split? 50/50 is common, but many orders use the parents' income percentages, such as 65/35.
- Does an expense need the other parent's consent in advance? Many orders require agreement before one parent incurs a non-emergency expense the other will have to share, especially for activities.
- What is the deadline to request reimbursement, and the deadline to pay? Orders often say something like “within 30 days of receipt of proof of payment.”
- Is there a threshold? Some orders only split expenses over a certain amount.
Parents fight about expenses the order does not cover, splits the order does not use, and activities the other parent never agreed to. Knowing the terms prevents most of that.
Log every expense the day it happens
The system that works is the one you actually use, and the one you actually use is the one that takes thirty seconds. Every time you pay a shared expense:
- Record the date, the amount, the child, and what it was for
- Attach a photo of the receipt or the explanation of benefits
- Note the split that applies
- Send the reimbursement request to the other parent in writing
In Family Focus that is one screen: log the expense, snap the receipt, pick the split (50/50, 70/30, 100/0, or whatever your order says), and the other parent is notified with the math already done. They mark it settled when they pay, and a running balance at the top of the list shows who owes what at any moment.
Why Venmo memos and text messages fail
A Venmo payment labeled “kids” proves that money moved. It does not prove what the expense was, that the other parent agreed to it, what the split was supposed to be, or whether it was ever requested. A text saying “you owe me $240 for the dentist” is better, but it is unconnected to the receipt, can be deleted, and does not show whether it was ever paid.
When a dispute reaches a mediator or a judge, the question is always the same: show me the expense, the proof of payment, the request, and the response, in order. If those four things live in four different apps, you will spend hours assembling them and the other parent will dispute half. If they live in one place, in one line, with a timestamp, there is nothing to dispute.
Make the request clean and the deadline visible
A reimbursement request should be short, specific, and attach the proof:
“Orthodontist, Oct 14, $380, receipt attached. Your 50% share is $190. Per our order, due within 30 days.”
No commentary about the last three expenses that went unpaid. If those are unpaid, they are already in the running balance. A record of polite, timely, documented requests, followed by silence or late payments, is exactly what a court needs to see to enforce the order, and often what the other parent needs to see to simply start paying.
Expenses that need consent first
If your order requires agreement before incurring an expense, get it in writing before you pay. “Travel soccer is $650 for the spring season. Are you okay splitting it per our order?” A yes is a yes you can hold them to. A no means you can choose to pay it yourself or take the question to mediation, but you cannot sign up and send a bill. Parents lose these disputes constantly by assuming the other parent will go along and then being left with the full cost.
Keep the balance honest in both directions
Expense tracking is not a weapon. If the other parent pays for something that is shared, it goes in the ledger too, and your share is owed just as promptly. A running balance that both parents can see, built from entries both parents can add, is fair by design: nobody is keeping a private tally, and nobody can claim they did not know. That transparency alone resolves a surprising number of disputes before they start.
Reconcile monthly, and export when it matters
Once a month, look at the balance together, in writing: “As of Nov 1 the balance is $412 owed to me. Can you settle by the 15th?” Then, if you ever need to show an attorney or court the history, export the expense ledger for the relevant period. Family Focus produces a PDF with every expense, split, receipt, and settlement status for any date range, which is what a support magistrate wants to see in an enforcement hearing and what a mediator wants to see before anyone argues about numbers.
The whole system in one sentence: know your order, log every shared expense with the receipt the day you pay it, request reimbursement in writing with the math done, and keep one running balance both parents can see.
Family Focus is a communication and record keeping tool, not a law firm. This article is general information and is not legal advice. Custody law varies by state, and whether any record is admissible is a question for your attorney and the court.