Start with 13 Del. C. § 514; Del. Fam. Ct. Civ. R. 508; Delaware Child Support Formula. In Delaware, Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%. Beyond two and one-half years, neither the particularity nor the 10% requirement applies. That is the question this guide answers for modifying child support. File a petition to modify filed with the Family Court, or a DCSE review request. Modification applies to installments accruing after the petition; arrears already due are not reduced. DCSE may seek administrative adjustment of IV-D orders.
The legal standard in Delaware
Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%. Beyond two and one-half years, neither the particularity nor the 10% requirement applies.
In practice, the moving parent carries the burden. The court compares the facts as they stood when the last order was entered against the facts today, and asks whether the difference is significant enough — and durable enough — to justify a new order. Judges distinguish between temporary setbacks (a few weeks of reduced hours) and genuine, continuing changes (a layoff, a new custody schedule, a child's changed medical needs).
What counts as a change in Delaware
Facts that most often support modification:
- Income changes. Job loss, demotion, retirement, disability, or a significant raise on either side. Voluntary quits and deliberate underemployment usually backfire — courts may impute income.
- Parenting-time shifts. A new custody order, a child moving households, or substantial unexercised visitation.
- The child's needs. New medical or educational expenses, health-insurance changes, or a child reaching an age that changes the guideline bracket.
- Guideline updates. In many states, a recalculated guideline amount that differs from the current order by the statutory margin is itself the change — 13 Del. C. § 514; Del. Fam. Ct. Civ. R. 508; Delaware Child Support Formula controls how that math works here.
- Incarceration, military deployment, or other statutory events that Delaware treats as qualifying changes.
Facts that rarely work: a short gap between jobs, a new partner's income (usually not imputed to a parent), lifestyle choices, or the passage of time alone where Delaware still requires a showing.
How the Delaware rule applies
Apply the Delaware authorities in order. The facts are simplified so the statute and the standard are visible.
A parent in Delaware lost income after the last child-support order and wants the number changed.
- File in the Delaware Family Court or the Division of Child Support Enforcement (DCSE) using a petition to modify filed with the Family Court, or a DCSE review request.
- Prove the Delaware standard: Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%. Beyond two and one-half years, neither the particularity nor the 10% requirement applies.
- Expect the effective date to follow this rule: Modification applies to installments accruing after the petition; arrears already due are not reduced.
- If the case is IV-D, also consider administrative review: DCSE may seek administrative adjustment of IV-D orders.
A Delaware modification is a new order under 13 Del. C. § 514; Del. Fam. Ct. Civ. R. 508; Delaware Child Support Formula. It is not automatic, and arrears already due generally stay due.
Step-by-step: how to file
A petition to modify filed with the Family Court, or a DCSE review request. The typical sequence:
- Confirm jurisdiction. Delaware courts modify their own orders; if the child and parties have moved, the Uniform Interstate Family Support Act (UIFSA) determines which state may act. Generally the issuing state keeps exclusive continuing jurisdiction until all parties and the child have left, or the parties agree in writing to transfer.
- Gather financial proof. Two to three years of tax returns, recent pay stubs, proof of benefits or disability, health-insurance costs, and child-care invoices. Expect a financial affidavit or worksheet under 13 Del. C. § 514; Del. Fam. Ct. Civ. R. 508; Delaware Child Support Formula.
- File the modification request. A petition to modify filed with the Family Court, or a DCSE review request.
- Serve the other parent. Service starts the retroactivity clock in most states — delays cost you.
- Exchange discovery. Interrogatories, document requests, and sometimes a vocational evaluation if underemployment is disputed.
- Negotiate or litigate. Many modification cases settle at mediation or a case-management conference; a stipulated modification must still be approved and entered by the court.
- Get the new order entered. Support does not change until a judge signs — keep paying the existing order until then.
When the change takes effect (retroactivity)
Modification applies to installments accruing after the petition; arrears already due are not reduced.
This is the single most expensive mistake in modification practice. If circumstances changed in January but the motion is filed in June, the months in between are almost always governed by the old order. Filing promptly — even before you have perfect evidence — protects the effective date.
Periodic reviews and administrative modification
DCSE may seek administrative adjustment of IV-D orders.
Administrative review is often faster and cheaper than litigation, but its scope is narrower: agencies adjust amounts under the guidelines, while only the Delaware Family Court or the Division of Child Support Enforcement (DCSE) can resolve disputed facts about custody, income imputation, or deviations.
Interstate cases (UIFSA)
When parents live in different states, a Delaware order can usually be registered and enforced anywhere, but modification follows UIFSA's jurisdictional rules. Register the order in the responding state, then seek modification where the law permits it. Do not simply stop paying while a jurisdictional fight is pending — arrears keep accruing under the existing order.
Case law: how Delaware courts decide modification motions
The opinions below are in the LawDiver corpus, with block quotes pulled from the opinion text so you can jump straight into the full decisions.
DIVISION OF CHILD SUPPORT ENFORCEMENT, ex. rel., Karen HARPER, Below v. James BARROWS, Below
…ean hands”) and Noddin v. Noddin, 455 A.2d at 1053 (support modification denied to incarcerated parent who "comes to the court with unclean hands”). All jurisdictions agree that if the obligor entered prison for non-payment of child support or to deliberately avoid the support obligation, no reduction or discharge will be permitted and the arrearages will simply increase regard…
Practitioners open DIVISION OF CHILD SUPPORT ENFORCEMENT, ex. rel., Karen HARPER, Below v. James BARROWS, Below when Delaware child support modification turns on the distinction in this sentence: "Noddin v. Noddin, 455 A.2d at 1053 (support modification denied to incarcerated parent who 'comes to the court with unclean hands”)." Do not lift it out of the facts the court was deciding.
Adam M. ALLEN, Below v. DIVISION OF CHILD SUPPORT ENFORCEMENT, ex rel., Sandra WARE, Below
…will continue after the termination of AFDC with respect to arrearages for the purpose of remembering past assistance paid. 3. I further understand that any support payments received by me for any person receiving public assistance belongs to the State of Delaware and must be given to the Division of Child Support Enforcement. 4. I further understand that I must cooperate in lo…
Practitioners open Adam M. ALLEN, Below v. DIVISION OF CHILD SUPPORT ENFORCEMENT, ex rel., Sandra WARE, Below when Delaware child support modification turns on the distinction in this sentence: "AFDC with respect to arrearages for the purpose of remembering past assistance paid. 3." Do not lift it out of the facts the court was deciding.
Donald B. BALL, Respondent Below, Appellant, v. DIVISION OF CHILD SUPPORT ENFORCEMENT, Ken Mitchell, Petitioner
…Commissioner’s order. The Family Court Commissioner’s order modified the amount of child support the Father was obligated to pay to the Grandfather. The Father has raised two issues on appeal. First, he argues that the Family Court abused its discretion in denying his Motion to Reopen its final judgment of dismissal pursuant to Rule 60(b)(1). Alternatively, he argues that the F…
On child support modification, Donald B. BALL, Respondent Below, Appellant, v. DIVISION OF CHILD SUPPORT ENFORCEMENT, Ken Mitchell, Petitioner speaks to the Delaware dispute in this passage: "Commissioner’s order. The Family Court Commissioner’s order modified the amount of child support the Father was obligated to pay to the Grandfather. The Father has raised two issues on appeal." The surrounding opinion shows how the court applied that language to the record.
Ford v. Division of Child Support Enforcement
Ford v. Division of Child Support Enforcement, 985 A.2d 390 (2009)
…ourt Commissioner for a hearing on the petition of DCSE for modification of Father's child support obligation with respect to the parties' minor child, Thomas, born 12/09/93. Father and Mother both testified at the hearing. Neither was represented by counsel. Counsel appeared on behalf of DCSE. The last Family Court order regarding Father's child support obligation, issued on O…
Delaware opinions such as Ford v. Division of Child Support Enforcement are cited where child support modification is disputed. The court stated: "Commissioner for a hearing on the petition of DCSE for modification of Father's child support obligation with respect to the parties' minor child, Thomas, born 12/09/93. Father and Mother both testified at the hearing. Neither was represented by counsel." That is the language to brief; the rest of the decision supplies the procedural posture.
DIVISION OF CHILD SUPPORT ENFORCEMENT ex rel. Reba REESE v. Carlos SHUBA, M.D.
DIVISION OF CHILD SUPPORT ENFORCEMENT ex rel. Reba REESE v. Carlos SHUBA, M.D., 585 A.2d 1316 (1988)
…ively high incomes of parents do not, without more, warrant modification of the formula. Moreover, the Court noted that the Family Court must explain its departure from the formula, citing Roman, A. v. Aldona, R.A., Del.Super., No. 81A-NO-4, Balick, J. (March 29, 1983). In determining whether the amount calculated under the Delaware Child Support Formula in this case is fair an…
Delaware opinions such as DIVISION OF CHILD SUPPORT ENFORCEMENT ex rel. Reba REESE v. Carlos SHUBA, M.D. are cited where child support modification is disputed. The court stated: "Moreover, the Court noted that the Family Court must explain its departure from the formula, citing Roman, A. v. Aldona, R.A., Del.Super., No. 81A-NO-4, Balick, J. (March 29, 1983)." That is the language to brief; the rest of the decision supplies the procedural posture.
Practical checklist before you file
- Re-read the existing order: does it recite a modification standard, a reservation of jurisdiction, or agreed deviation findings? Those terms shape your burden.
- Run the current Delaware guideline calculation on today's incomes before filing; know the percentage gap.
- Assemble documents that date the change (termination letter, disability award, new lease, custody order).
- Calendar the three-year review cycle if Delaware offers one for your case type.
- Keep paying the current order until a new one is entered — arrears are nearly impossible to erase later.
- Search LawDiver for recent Delaware modification decisions before briefing or mediating.
Key takeaways
- Delaware modification actions are filed in the Delaware Family Court or the Division of Child Support Enforcement (DCSE).
- The legal standard: Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%.
- Modification applies to installments accruing after the petition; arrears already due are not reduced.
- DCSE may seek administrative adjustment of IV-D orders.
- A modification is never automatic — even when a percentage threshold is met, the court must enter a new order.
- Companion reading: Delaware child support guidelines and how to modify alimony in Delaware.
Frequently asked questions
Can child support be modified in Delaware?
Yes. Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%. Beyond two and one-half years, neither the particularity nor the 10% requirement applies. Modifications are handled through a petition to modify filed with the Family Court, or a DCSE review request.
How much does income have to change to modify child support in Delaware?
Within two and one-half years of the last determination, the petition must allege with particularity a substantial change not caused by the petitioner’s voluntary or wrongful conduct, and the recalculation must produce a change of more than 10%. Beyond two and one-half years, neither the particularity nor the 10% requirement applies. Some changes — custody shifts, medical needs, or statutory events — qualify even without hitting a numeric threshold.
Can Delaware child support be modified retroactively?
Modification applies to installments accruing after the petition; arrears already due are not reduced. Plan on the current order controlling until a new one is entered.
Who can request a modification?
Either parent, and in IV-D cases the state child support agency on a parent's behalf. DCSE may seek administrative adjustment of IV-D orders.
Do I need a lawyer to modify child support in Delaware?
Not always — the Delaware Family Court or the Division of Child Support Enforcement (DCSE) accepts filings from self-represented parents, and administrative reviews are designed for that. Contested income imputation, self-employment income, or interstate jurisdiction issues are where counsel matters most.
Does the other parent's refusal to follow the visitation order change support?
Not automatically. Custody interference and support are legally distinct issues in Delaware; withholding support in response to withheld visitation typically creates arrears and contempt exposure. Seek modification or enforcement of the parenting order through the court instead.
Related guides
- How Delaware calculates child support
- Delaware alimony / alimony guide
- How to modify alimony in Delaware
- How to modify child support in Delaware
Disclaimer
This guide is general legal information about modifying child support in Delaware, not legal advice. Statutes, guidelines, and case law change. Confirm the current text of 13 Del. C. § 514; Del. Fam. Ct. Civ. R. 508; Delaware Child Support Formula and consult a licensed Delaware family-law attorney about your specific order.