Shared Expense Split Calculator
List the shared child expenses, mark who paid, and see who owes whom — both under a straight 50/50 split and under an income-proportional split.
Free · No sign-up · Nothing leaves your browser
| Expense | Amount | Paid by | |
|---|---|---|---|
50/50 split
Parent A owes Parent B $82.50
Each parent responsible for $487.50.
Pro-rata split (59% / 41%)
Parent A owes Parent B $168.53
Parent A responsible for $573.53, Parent B for $401.47.
- Total shared expenses
- $975.00
- Paid by Parent A
- $405.00
- Paid by Parent B
- $570.00
50/50 or pro-rata?
A 50/50 split is simplest and is what most informal agreements default to. Courts more often order a pro-rata split — each parent pays the same share of costs as their share of combined income — because it keeps a large income gap from pricing one household out of activities and medical care.
Whichever you use, put the percentage, the receipt deadline, and the reimbursement deadline in writing. Download the shared expense reimbursement log to keep the paper trail, or let CustodyTrac's expense tracker calculate and log it automatically.
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<a href="https://custodytrac.com/tools/expense-split-calculator">Shared Expense Split Calculator — CustodyTrac</a>More free tools
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