105 W Woodlawn Ave, San Antonio, TX 78212Toll-free (800) 932-6553
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Texas adds 6% simple interest to unpaid child support. Enter the order start, the monthly amount, payments made, and each child's birth date for a rough estimate of the arrears.
First month support was due.
Used to estimate how many months were owed.
Assumes each payment equals one full monthly payment (no partials/credits).
Add each child's birth month and year. We estimate end month at age 18 (latest child).
Estimated end month: —
To calculate child support arrears, start with each missed payment and add 6% simple interest per year from the date that payment became delinquent (Tex. Fam. Code § 157.265), and keep it running until the balance is paid in full. This arrears calculator gives a quick estimate — because Texas interest is simple, not compounding, the math is predictable, but the totals still surprise most parents.
An exact figure comes from the State Disbursement Unit ledger, applied payment by payment. We do that calculation as part of every collection case.
