Pennsylvania uses income shares to set child support, not a percentage of your paycheck

Pennsylvania's child support formula starts with both parents' gross income — not take-home pay — and divides the cost of raising a child between them based on what each parent earns. The state publishes a Child Support Guidelines table that shows the total support obligation for different income levels and numbers of children. Each parent then pays their share of that obligation based on their percentage of the combined household income.

This is different from states that straightforward take a flat percentage of one parent's income. Pennsylvania's method means a parent earning $30,000 and a parent earning $70,000 split the obligation differently than two parents each earning $50,000, even though the total household income is the same.

The calculation happens in front of a judge or hearing officer, usually during a custody case or when one parent requests a modification. You do not calculate this yourself — the court does — but understanding the steps helps you know what income the court will count and what deductions it might allow.

Key Takeaways

  • Pennsylvania's formula divides child support between parents based on their share of combined gross income, using a published guidelines table that varies by number of children.
  • Gross income includes wages, self-employment earnings, rental income, and some benefits, but the court can exclude certain items like Social Security or workers' compensation in specific situations.
  • The court adds costs for health insurance, childcare, and extraordinary expenses (like private school or medical needs) on top of the base support obligation.
  • If either parent earns more than the income cap on the guidelines table (which changes yearly), the court has discretion to calculate support differently or explore the cap and adjust upward.
  • Child support orders can be modified if income changes by 10 percent or more, or if circumstances like job loss or custody changes occur.

What counts as income in Pennsylvania's calculation

The court starts by adding up gross income from all sources for both parents. Gross means before taxes, deductions, or anything else comes out. This includes W-2 wages, self-employment income, bonuses, commissions, rental income, interest and dividend income, unemployment benefits, and some disability or retirement payments.

The court does not count Social Security retirement benefits, Supplemental Security Income (SSI), or workers' compensation in most cases. It also excludes means-tested public information like TANF (Temporary information for Needy Families) or food stamps. If a parent receives child support from another child, that incoming support reduces their available income for calculating support for your child.

Self-employed parents must provide tax returns and business records. The court looks at net self-employment income (revenue minus legitimate business expenses), not gross revenue. If a parent is underemployed or intentionally earning less to avoid support, the court can impute income — assign a higher income based on their education, work history, or earning capacity — but this requires evidence and a hearing.

How the guidelines table works and what it shows

Pennsylvania publishes a table that lists the total weekly child support obligation for different combined parental incomes and different numbers of children. The table is updated each year, and the income cap (the highest income level on the table) changes annually. As of recent years, the cap has been in the range of $163,000 to $180,000 combined income, though you should check the current year's table with the court or a family law attorney.

To use the table, you add both parents' gross weekly income and find the row that matches the number of children. That row shows the total obligation — the amount both parents together must pay. For example, if combined income is $2,000 per week and there are two children, the table might show a total obligation of $580 per week (this is a simplified example; actual amounts vary by year).

Each parent then pays their share. If Parent A earns $1,200 per week and Parent B earns $800 per week, Parent A pays 60 percent of the $580 obligation ($348) and Parent B pays 40 percent ($232). The parent without primary custody (or with less custody time) typically pays the other parent.

Adjustments for health insurance, childcare, and special expenses

The base obligation from the guidelines table is not the final number. The court adds costs that directly support the child. If one parent pays for the child's health insurance, that parent gets a credit — the cost is subtracted from what they owe, or added to what they receive. Dental and vision insurance are usually included; life insurance is not.

Childcare expenses needed so a parent can work are also added to the obligation. This includes daycare, after-school programs, and summer camps that allow a parent to maintain employment. The cost is split between parents based on their income share, just like the base obligation.

Extraordinary expenses — things beyond routine care — are split too. These include private school tuition, tutoring, sports or music lessons, orthodontia, and medical or mental health treatment not covered by insurance. The court must find that the expense is necessary and reasonable before adding it. A parent cannot unilaterally enroll a child in an expensive program and demand the other parent pay half without a court order or agreement.

What happens if income is above the guidelines cap

When combined parental income exceeds the cap on the guidelines table, the court has discretion in how to proceed. Some judges explore the cap (calculate support as if income were at the cap level) and then adjust upward based on factors like the child's standard of living, the parents' ability to pay, and the child's actual needs. Others calculate support on the actual income without using the table at all.

This is one area where outcomes vary significantly depending on the judge and the specific case. A parent with very high income might argue that the child does not need support calculated on all of it; the other parent might argue the child should maintain the standard of living they had during the marriage. The court weighs these arguments and makes a decision.

If you are in a high-income case, the difference between how the court handles the cap can mean thousands of dollars per month. This is a situation where consulting a family law attorney in your county is worth the cost, because local practice and the judge's typical approach matter.

How custody time affects the calculation

The guidelines table assumes one parent has primary custody and the other pays support. If custody is shared more equally — for example, 40/60 or 50/50 — the court adjusts the calculation. The parent with less time may still owe support, but the amount is reduced because they are covering the child's expenses during their own parenting time.

In a true 50/50 custody arrangement, support might be minimal or zero, depending on the income difference. If one parent earns significantly more, they may still owe support even with equal time, because the higher-earning parent can provide a higher standard of living.

Custody time is measured in overnights per year. The court looks at the actual schedule, not what the order says should happen. If the order says 50/50 but one parent regularly has the child extra nights, the court may adjust support based on the real pattern.

When and how child support orders can be changed

A child support order is not permanent. Either parent can request a modification if circumstances change. Pennsylvania law allows modification if income changes by 10 percent or more, or if there is a substantial and continuing change in circumstances — like a job loss, a significant raise, a change in custody, or a change in health insurance costs.

The parent requesting the change must file a petition with the court. The court will schedule a hearing, and both parents will present income information and evidence of the changed circumstances. If the court finds the change is real and substantial, it will recalculate support and issue a new order. The new amount usually takes effect on the date the petition was filed, not the date of the hearing.

If a parent stops paying without requesting a modification, they owe the full amount ordered plus interest and penalties. Requesting a modification does not stop the obligation to pay the current order while the case is pending.

Frequently Asked Questions

Does Pennsylvania count my new spouse's income toward child support?

No. Only the biological or adoptive parent's income counts. A stepparent's income is not included in the calculation, even if they are married to the paying parent and contribute to household expenses. However, if a parent remarries and their spouse's income allows them to reduce their own work, the court might consider that when evaluating whether to impute income.

What if I am self-employed and my income varies a lot year to year?

The court typically averages your income over two or three years using tax returns and business records. If your income is genuinely volatile (like commission-based work or seasonal employment), the court may use an average or may set support at a level that reflects typical earnings rather than a single high or low year. Bring documentation of your actual income patterns to the hearing.

Can the court order me to pay for college or private school?

Pennsylvania child support ends at age 18 or high school graduation, whichever is later. College is not included in the standard child support calculation. However, parents can agree to pay for college, and a court can order college contributions in some cases, but this is separate from the child support obligation and requires a specific agreement or court order.

What if the other parent is not working on purpose to lower their support obligation?

The court can impute income if it finds a parent is intentionally underemployed or unemployed to avoid paying support. The court must hold a hearing and consider the parent's education, work history, and earning capacity. Imputation is not automatic — the other parent must request it and present evidence — but it is a real remedy if one parent is deliberately staying home or taking a low-wage job to reduce their obligation.

How do I know what the current guidelines table shows for my income level?

The Pennsylvania Supreme Court publishes the current Child Support Guidelines table each year on its website and through the court system. Your county courthouse or a family law attorney can provide the current table. The table is public information, and you can request it from the court clerk or find it online through your county's court website.