Child Support in Pennsylvania: How Much Will You Owe?

Quick answer: it depends on both parents' incomes, how many children you have, and the parenting schedule. The calculator on this page turns those numbers into a real guideline estimate in about a minute. It is an educational estimate, not legal advice, and the judge always sets the final amount. FamilyCourtHelp.com is a self-help resource, not a law firm.

Wondering how much child support you will owe or receive in Pennsylvania? The state uses one formula everywhere, so the same math applies in every county. This page explains how it works, lets you run a live estimate, and links to a dedicated page for each county at the bottom.

Pennsylvania follows the Income Shares model under Pa. R.C.P. 1910.16-1 et seq.. The court combines both parents' monthly gross incomes, looks up the basic support obligation on the state's guideline schedule for that income level and number of children, then prorates the obligation between the parents according to each parent's percentage share of the combined income.

What counts as income? Pennsylvania runs the formula on net income, meaning income after taxes come out. Net monthly income, gross income from all sources reduced by federal, state, and local income taxes, FICA, non-voluntary retirement, mandatory union dues, and existing court-ordered support and alimony.

Parenting time matters directly in Pennsylvania: the number of overnights each parent has changes the math itself. Pennsylvania uses a shared-care formula tied to overnights. The big break comes when the paying parent has the children for at least 40 percent of the overnights, which triggers a substantial-shared-custody offset that lowers the basic obligation. Below that threshold, parenting time has little direct effect on the guideline number. Because both parents' net incomes already combine under the Income Shares model, more equal time plus closer incomes pushes the support figure down. The on-page calculator is only an estimate, so confirm your overnight count against the official Pennsylvania worksheet.

When does it end? Pennsylvania child support generally ends at age 18 or upon high school graduation, whichever is later. Continuing support for disabled adult children is available.

Can the amount change later? File a petition in the family division of the Court of Common Pleas or request review through the Domestic Relations Section. A material and substantial change in circumstances supports modification.

If payments fall behind, Pennsylvania has real enforcement tools. Pennsylvania BCSE enforces through immediate income withholding, tax intercept, license suspension, lien filings, credit reporting, and contempt referrals.

Child support cases in Pennsylvania are generally handled through the state's Court of Common Pleas, and Pennsylvania Bureau of Child Support Enforcement (Department of Human Services) runs the state's child support services program. Forms and local practice can vary, so confirm the current details with your local court or the agency.

The calculator on this page is the same live engine behind our full Child Support Calculator. Enter both incomes, the number of children, and the overnight split, and the estimate updates instantly. The full calculator page adds extras like health insurance, child care costs, and saved scenarios.

Bottom line for Pennsylvania: the guideline number comes from incomes, children, and parenting time. Run the estimate on this page, keep your paperwork honest and complete, and let the court confirm the final amount.

Frequently asked questions

How much child support will I owe in Pennsylvania?

There is no flat amount. Pennsylvania uses the Income Shares model under Pa. R.C.P. 1910.16-1 et seq., so the number depends on both parents' incomes, the number of children, and the parenting schedule. The calculator on this page gives you a guideline estimate, and the court sets the final amount.

When does child support end in Pennsylvania?

Age 18, or upon graduation from high school, whichever is later.

Can the child support amount be changed later in Pennsylvania?

Usually yes, when circumstances change enough. A material and substantial change in circumstances; a meaningful change in income or expenses typically satisfies the test.

Who handles child support cases in Pennsylvania?

Cases are generally heard in the state's Court of Common Pleas, and Pennsylvania Bureau of Child Support Enforcement (Department of Human Services) handles services like locating parents, establishing orders, and collecting payments.