Changing a Divorce or Custody Agreement

Some parts of a Pennsylvania divorce agreement can change later and some generally cannot. Custody orders can be modified when a change serves the child's best interest, and child support, spousal support and court-ordered alimony can be modified when circumstances change substantially. The division of property is different: the Divorce Code has no comparable modification rule for it, so property terms should be treated as final when you sign.

Families change after a divorce: jobs, homes, new partners, children growing up. Knowing what can be revisited, and how, helps you write an agreement that holds up and helps you respond calmly when life shifts. For the overall approach, see our collaborative family law page.

How a change usually happens, step by step

Check the agreement. Many settlements include a review clause or a dispute-resolution step, such as mediation, before anyone files in court.
Talk first. If both parents or former spouses agree on the change, it can be written up and entered as an amended order.
Use a focused process if needed. A single disputed change is a good fit for issue-focused mediation; see full versus issue-focused mediation.
Petition the court if you cannot agree. Each type of order has its own standard and procedure, described below.
Follow local requirements. In Allegheny County, for example, the Generations program applies each time a custody petition is filed; see the Allegheny County Family Division guide.

What can change after a Pennsylvania divorce or custody agreement
Term	Can it be modified?	Standard	Source
Custody (legal and physical)	Yes	Upon petition, to serve the best interest of the child	23 Pa.C.S. § 5338
Relocation with a child	Requires consent or court approval	Notice and objection process; relocation factors	23 Pa.C.S. § 5337
Child support	Yes	A material and substantial change in circumstances	Pa.R.C.P. 1910.19
Spousal support and APL	Yes	A material and substantial change; ends on the death of the payee spouse	Pa.R.C.P. 1910.19
Court-ordered alimony	Yes	Changed circumstances of a substantial and continuing nature; remarriage of the recipient ends it	23 Pa.C.S. § 3701(e)
Division of property	No comparable modification rule	Treat as final; undisclosed assets are an exception	23 Pa.C.S. § 3505(d)

Custody: the best-interest standard

Pennsylvania lets a court modify a custody order "to serve the best interest of the child" upon a petition (23 Pa.C.S. § 5338). A consent custody order that parents built together is still a court order, so changes need either a new agreed order or a petition. The court weighs the same factors it uses for any custody decision, with substantial weight on the child's safety (§ 5328). Parents who expect change, for example because a child is very young, often build review points into the plan itself. See turning a custody agreement into an order.

Moving is a special case. A parent who wants to relocate must get the consent of everyone with custody rights or the court's approval, after giving notice by certified mail no later than 60 days before the move (or within 10 days of learning of it, in limited cases); the other parent has 30 days after receiving notice to object (§ 5337). See moving after a custody agreement.

Support: material and substantial change

A petition to modify support must state the specific material and substantial change in circumstances it relies on (Pa.R.C.P. 1910.19(a)). The rule notes that a new guideline amount from revised guidelines may count as such a change, as can additional income, income sources or assets identified through automated methods or otherwise. If the court finds a material and substantial change, it may raise or lower the order based on the parties' monthly net incomes, the guidelines and the custodial time at the time of the hearing (Pa.R.C.P. 1910.19(c)). Orders for spousal support and APL end on the death of the payee spouse (Pa.R.C.P. 1910.19(d)). See child support when parents settle.

A petition to modify child support may not be withdrawn without both parties' consent or leave of court, while a petition to modify spousal support or APL may be withdrawn without consent (Pa.R.C.P. 1910.19(b)).

Alimony: substantial and continuing change

A court-ordered alimony award is subject to further order when either party's circumstances change in a substantial and continuing way; it may be modified, suspended, terminated or reinstated, but only for payments accruing after the petition. Remarriage of the party receiving alimony terminates the award (23 Pa.C.S. § 3701(e)). When a court approves an alimony agreement the spouses voluntarily entered into, the agreement becomes the court's order and can be enforced (§ 3701(f)). Because agreements can be written in different ways, the exact wording of your settlement matters; see spousal support and alimony by agreement.

Property: plan for finality

The Divorce Code sections on support, custody and alimony each contain a modification standard. The property sections we rely on do not. The practical lesson is to treat property terms as final when you sign: make sure the values, the house plan, the retirement orders and the deadlines are what you want. One important protection remains: if an asset worth $1,000 or more was left out of the division because a spouse failed to disclose it, the other spouse may at any time ask the court for a constructive trust over it (23 Pa.C.S. § 3505(d)). See dividing property by agreement.

Writing an agreement that adapts well

The best time to plan for change is while you are drafting. Collaborative and mediated agreements often include terms that make later adjustments easier and less adversarial. A dispute-resolution clause can require a meeting or mediation before anyone files in court. A review date, such as when the youngest child starts school, can prompt a scheduled look at the parenting plan and support. An information-sharing clause can require each parent to share income information each year so support can be checked without a court fight. Holiday and summer schedules can include a method for trading time when a parent's work changes. And a parenting plan can set out how the children's preferences will be heard as they grow older. These provisions do not prevent a court petition when one is needed, but they often make one unnecessary.

What changes the answer

Whether you agree. Agreed changes are faster and can be entered as amended orders.
The type of term. Custody, support and alimony each have their own standard; property generally has none.
The wording of your agreement. Review and dispute-resolution clauses change how a change is handled.
Why the earlier process ended. If a prior collaborative process broke down, see what happens if a collaborative divorce breaks down for how files and lawyers are handled.
Safety. Where there is abuse, protective orders come first, and mediation may not be appropriate.

A worked example

For example, imagine hypothetical former spouses Mia and Jon, who settled collaboratively three years ago. Jon has taken a job with a much higher salary, and their older child now plays a travel sport with weekend tournaments. Their agreement requires a mediation session before any court filing. In one focused session they agree on a new weekend schedule around the tournaments and recalculate child support under the guidelines with Jon's new income. Their lawyers prepare an amended consent custody order and an agreed support modification. The property terms, including who kept the house, stay as they were. This is an illustration only.

Common mistakes

Changing the schedule informally for years. A long informal change can create confusion; update the order.
Stopping or reducing support without an order. The existing order stays in effect until changed.
Moving without notice. Relocation rules apply even under an agreed custody order.
Assuming property can be revisited. Plan for finality at signing.
Skipping the agreement's dispute clause. If your agreement requires mediation first, follow it.

What to do this week

Reread your agreement for review dates and dispute-resolution clauses.
Write down exactly what has changed and when.
Gather recent income records if support is involved.
Propose a conversation or mediation session to the other parent.
Consult a lawyer before filing a petition, especially about relocation.

Frequently asked questions

Can we change custody just by agreeing?

You can agree, but to make the change enforceable it should be entered as an amended consent order.

Does a new job justify a support change?

It may, if it is a material and substantial change in circumstances, which the petition must specifically state.

Does alimony end if my former spouse remarries?

Remarriage of the recipient terminates court-ordered alimony under § 3701(e).

Can I reopen the property division if I regret it?

Generally plan as if you cannot. The exception for undisclosed assets worth $1,000 or more is in § 3505(d).

What if my former spouse wants to move away with the children?

Relocation requires consent or court approval, with 60 days' notice in most cases and a 30-day objection period.

Do I have to go back to the same lawyers?

No. You can use any lawyer, or a mediator, for a later change.

Can you change a divorce or custody agreement later in Pennsylvania?