How Child Support Works in Pennsylvania
Pennsylvania uses an income shares model for child support — a formula that takes both parents' net monthly incomes, applies a support schedule based on those combined incomes and number of children, and allocates the obligation proportionally. The formula produces a guideline amount that is presumptively correct but can be modified based on specific deviation factors.
Child support and custody are related but separate legal matters. The custody schedule directly affects the support calculation — changes to custody can affect support, and vice versa. In divorce cases involving children, both require coordinated strategy.
Calculating Child Support in Pennsylvania
Net Income
The calculation begins with net monthly income from all sources: wages, bonuses, self-employment income, rental and investment income, pensions, and other regular sources, minus taxes, FICA, and certain deductions. Voluntary reductions in income do not reduce the support obligation.
Custody Adjustments
The custody schedule is a key input. When a non-primary parent exercises 40% or more of overnight custody, a shared custody adjustment applies that reduces the basic support obligation. Additional expenses — health insurance premiums, unreimbursed medical costs, and childcare — are addressed separately.
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Contact UsWhat to Expect in Court
Child support cases in Allegheny County begin with a support conference by phone before a domestic relations officer. If there is disagreement about income, the calculation, or a requested deviation, the matter proceeds to a support hearing before a hearing officer. As of January 2022, the conference and hearing are scheduled on separate dates.
The domestic relations officer uses the information provided. If income is understated, overstated, or disputed, the numbers entered at conference can be difficult to change without a formal hearing. Preparation matters at every stage.
Child Support Questions
Pennsylvania Child Support Rules: What Changed January 1, 2026
The Pennsylvania Supreme Court approved major revisions effective January 1, 2026 — the most significant since January 2022. The new schedule removes the prior 30% custody assumption built into the base calculation and starts at $1,300/month combined net income (was $1,100).
Self-Support Reserve (Rule 1910.16-2)
Increased from $1,063 to $1,255 per month — the minimum an obligor must retain for basic needs. This significantly affects low-income calculations and reflects recognition that very low-income obligors were paying amounts that left them unable to meet their own basic needs.
High-Income Formula (Rule 1910.16-3.1)
For combined income above $30,000/month, new base amounts: one child $3,749 (was $3,608); two children $4,981 (was $4,250); three children $5,803 (was $4,951), plus percentage increases above $30,000.
Medical Documentation (Rule 1910.29)
The "Physician Verification Form" replaced by "Advanced Practice Provider's Statement," expanded to include physician's assistants, nurse practitioners, psychiatrists, and psychologists, with more detailed work capacity assessment categories.
Rules Reference
Child support is governed by: Rule 1910.16-1 (overview), 1910.16-2 (income; self-support reserve), 1910.16-3 (support schedule), 1910.16-3.1 (high-income formula), 1910.16-4 (calculation method), 1910.16-5 (deviation), 1910.16-6 (additional expenses), 1910.16-7 (multiple families), 1910.19 (modification).
How and Where to File in Allegheny County
Filing a child support complaint in Pennsylvania is free, and a lawyer is not required to file. Any parent seeking child support through the court initiates the process by filing a complaint, after which the court schedules a support conference and, if no agreement is reached, a subsequent hearing.
Filing can be done online through the Pennsylvania Child Support Website, or in person at one of three Allegheny County locations: the main child support office downtown at the Manor Building, 564 Forbes Avenue (fifth floor); the Mt. Lebanon Regional Office at 250 Mt. Lebanon Blvd., Suite 200 (for South Hills residents); or the Penn Hills Regional Office at 12000 Frankstown Road (for East Suburbs residents). Online filing is also available for modifications and payments through the same state portal.
To file, bring documentation with your Social Security number and the SSNs for your children, medical insurance cards (or copies), and a photo ID. The state's PA Child Support Estimator and online filing forms are accessible through the Resources page.
How Payments Work in Pennsylvania
When Support Begins to Accrue
Child support begins accruing from the date the complaint is filed — not the conference or hearing date, which may be weeks later. If you have been served with a support complaint, direct payments to the obligee in the interim minimize arrears owed at the conference. The parent paying is the obligor; the parent receiving is the obligee.
Wage Attachment and PASCDU
Once a support order is established, the obligor is generally wage-attached — support is deducted directly from their paycheck and remitted to the Pennsylvania State Collection and Disbursement Unit (PASCDU). Until wage attachment is entered, or if the obligor is self-employed, payments go directly to PASCDU. Once an order exists, no payments should be made directly to the obligee. Support received by the obligee is disbursed by PASCDU via direct deposit or an EPPI Card. Case status and payments can be reviewed online via the Pennsylvania Child Support Enforcement System (PACSES).
What the Guidelines Cover
The basic schedule covers housing, food, transportation, clothing, and miscellaneous expenses, plus the first $250 of unreimbursed medical expenses per child per year. Not covered: health insurance premiums, daycare, extracurricular activities, and private school tuition — these are added separately to the basic support award.
Duration of Child Support
The obligation to pay child support is not dischargeable once established. It continues until the child reaches the age of 18 or graduates from high school, whichever occurs later. In some cases — including children with disabilities — the obligation may extend beyond that point.
The Modification Rule Can Work Against You
Under Pa.R.C.P. 1910.19(c), when a modification petition is filed, the court may modify the order in any direction — regardless of who filed. If you file to reduce the amount you pay, the order can be increased. If you file to increase the amount you receive, the award can go lower. This is not theoretical — the firm has seen cases where the party that filed ended up worse off than before. Before filing a modification petition, understanding the likely outcome matters. If you are not sure how a modification will affect your case, consult with an attorney before going to court.
Self-Representation vs. Counsel
The firm regularly receives calls from people who handled their support matter without counsel and had a bad result. Two realities worth knowing: First, do not assume the other party will not have a lawyer. When support amounts are at stake, people get help from family and friends to find counsel. Second, without an attorney handling the hearing, you likely did not create a useful record or enter appropriate exhibits — which means exceptions to a bad ruling are difficult or impossible to pursue.
That said, if both parties are W-2 employees without special issues, self-representation at a support conference is sometimes manageable. The PA Child Support Estimator on the state website is a reasonable starting point. The firm links to it on the Resources page. But the free calculators all have limitations that software mirroring what the court uses can address — including specific deviation arguments based on statutes and case law that most people would not know exist.
When a Complex Hearing Is Required
Business owners, high-income individuals, seasonal employees, people paid primarily in cash, and cases where combined net monthly income exceeds $30,000/month typically require a complex support hearing. Any time experts calculate business income or additional fact witnesses are required, the matter should be designated complex from the outset.
Complex designation also enables formal discovery — not otherwise available in regular support cases. Unless the parties are going through a divorce with discovery already requested, a complex designation is the only mechanism to obtain certain financial information. A complex hearing is allotted up to two hours at no additional charge to the parties; a hearing scheduled for three hours is treated as a half-day hearing and requires advance payment of the hearing officer's time.