Pennsylvania Child Support Calculator
Estimate Pennsylvania child support for 2026 using the Income Shares guideline model under Pa. R.C.P. 1910.16-1 et seq.. Enter both parents' incomes and the parenting-time split to see what you may owe or receive.
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.
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.
Under Pa. R.C.P. 1910.16-1 et seq., the cost of the child's health insurance premium is treated as an add-on to the basic support obligation, not a personal expense of one parent. The premium attributable to the children is split between both parents in proportion to each parent's percentage share of combined net income, and the parent who actually pays the premium gets credit for it. Unreimbursed medical costs are generally allocated the same way once any annual threshold set by the rules is met. The calculator estimate is not legal advice, so verify amounts on the official worksheet.
Work-related child care and daycare costs are also handled as an add-on in Pennsylvania, separate from the basic guideline amount. Reasonable child care needed so a parent can work or pursue job training is added to the support obligation and then divided between the parents according to each one's share of the combined net monthly income. Keep receipts and provider statements, because the court allocates the actual reasonable cost. This page gives an estimate only, and the official Pennsylvania worksheet and a licensed attorney control the final allocation.
Pennsylvania presumes the guideline amount under Pa. R.C.P. 1910.16-1 et seq. is correct, but a judge may deviate when applying the number would be unjust or inappropriate. The court can weigh factors such as unusual needs or fixed obligations, other dependents, the parties' assets and standard of living, and the best interest of the child. The parent asking for a deviation carries the burden of showing it is warranted, and the court must put written reasons on the record. Any estimate here is not legal advice, and only the official worksheet and the court control.
Frequently asked questions
How is child support calculated in Pennsylvania?
Pennsylvania uses the Income Shares model under Pa. R.C.P. 1910.16-1 et seq. The court first figures each parent's net monthly income, which is 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 or alimony. It combines both net incomes, looks up the basic support obligation on the state guideline schedule for that income and number of children, then splits that obligation by each parent's percentage share of the combined income. Add-ons like health insurance and child care are layered on top. Our calculator gives an estimate only; the official worksheet controls.
Is there an official Pennsylvania child support worksheet or calculator I should rely on?
Yes. Pennsylvania publishes an official online support calculator through the state, and the guideline worksheets built into Pa. R.C.P. 1910.16-1 et seq. are the controlling forms a court actually uses. The official tool walks through both parents' net incomes, the guideline schedule, shared-custody overnights, and add-ons, and the Pennsylvania Bureau of Child Support Enforcement and Domestic Relations Sections rely on those numbers. The estimate on this page is a planning aid, not legal advice, and it does not replace the official worksheet. For anything you plan to file, run the official calculator and have a licensed Pennsylvania attorney confirm the figures.
How does shared or 50/50 custody change the support amount in Pennsylvania?
Pennsylvania ties shared parenting to overnights through a shared-care formula. The key threshold is 40 percent: once the paying parent has the children for at least 40 percent of the overnights, a substantial-shared-custody offset reduces the basic support obligation calculated under Pa. R.C.P. 1910.16-1 et seq. Below 40 percent, extra parenting time does not directly cut the guideline number. Because the Income Shares model already combines both parents' net incomes, a true 50/50 schedule with similar incomes produces a smaller transfer than a primary-custody arrangement. Count overnights carefully and check the official worksheet, since this page is an estimate, not legal advice.
How are bonuses, overtime, and self-employment income counted in Pennsylvania?
Pennsylvania defines income broadly as gross income from all sources before arriving at net monthly income. That sweep includes wages, overtime, bonuses, commissions, and self-employment earnings, so a parent cannot shield variable pay just by calling it irregular. For self-employed parents, the court looks at actual net business income and may scrutinize personal expenses run through a business. Net income is then gross reduced by taxes, FICA, non-voluntary retirement, mandatory union dues, and existing support orders. Because fluctuating income is often averaged, plug in realistic figures. The result here is an estimate, and the official Pennsylvania worksheet and a lawyer control the final number.
What happens if a parent is unemployed or underemployed in Pennsylvania?
Pennsylvania does not let a parent dodge support by quitting or staying underemployed without good reason. When a parent is voluntarily unemployed or earning less than they could, the court can impute an earning capacity based on prior earnings, education, training, job skills, and the local job market, then use that figure as net monthly income in the Income Shares calculation under Pa. R.C.P. 1910.16-1 et seq. Genuine inability to work, such as a documented disability, is treated differently. The Domestic Relations Section reviews the evidence. Any number you get here is an estimate, not legal advice, so confirm it on the official worksheet.
When does child support end in Pennsylvania?
In Pennsylvania, child support generally continues until the child turns 18 or graduates from high school, whichever happens later. So a child who is still in high school at 18 usually has support run through graduation. Support for a disabled adult child can continue beyond that point in appropriate cases. Support does not stop automatically just because a date passes; you typically need the order adjusted through the Domestic Relations Section or the Court of Common Pleas, and arrears already owed survive termination. This summary is an estimate of general rules, not legal advice, so confirm your specific end date with the court or an attorney.
How do I change or enforce a Pennsylvania support order?
To change an order, file a petition for modification in the family division of the Court of Common Pleas or request a review through your county Domestic Relations Section. Pennsylvania requires a material and substantial change in circumstances, and a meaningful change in either parent's income or expenses usually meets that test. For enforcement, the Pennsylvania Bureau of Child Support Enforcement (Department of Human Services) can use immediate income withholding, tax refund intercept, license suspension, lien filings, credit reporting, and contempt referrals. Past-due arrears stay collectible. These are general rules, and the figures on this page are an estimate, not legal advice; rely on the official worksheet and the court.