To get a Connecticut child support modification, you file a Motion for Modification with the court that issued your original order and show one of two things: a substantial change in circumstances since the last order, or that the current amount differs from the Connecticut Child Support Guidelines by 15% or more. Either parent can file, and Support Enforcement Services can file on its own in cases it manages.
The Two Grounds That Qualify
Connecticut law gives you two independent paths. You only need one.1Justia Law. Connecticut Code 46b-86 – Modification of Alimony or Support Orders and Judgments
The first is a substantial change in circumstances. That means a meaningful shift in either parent’s finances or in the child’s needs since the last order was entered. Job loss, a large income increase, a new disability, or a serious medical condition in the child can all qualify. The change does not have to have been unforeseeable at the time of the original order.
The second is a 15% deviation from the guidelines. If what the current Connecticut Child Support Guidelines would produce today differs from your existing order by at least 15%, the court presumes that deviation is substantial enough to justify a change. A smaller deviation is presumed not substantial, though you can try to rebut that presumption with strong evidence.1Justia Law. Connecticut Code 46b-86 – Modification of Alimony or Support Orders and Judgments
When the court decides whether a deviation is substantial, it also looks at how property was divided in the original divorce decree and any benefits the child receives from that division.1Justia Law. Connecticut Code 46b-86 – Modification of Alimony or Support Orders and Judgments
Either parent has equal standing. The paying parent might seek a reduction after losing a job. The receiving parent might seek an increase after the child develops expensive medical needs, or because the other parent’s income has climbed. Connecticut’s guidelines treat gross income broadly, including salary, hourly wages (up to 45 hours per week), commissions, bonuses, tips, self-employment earnings after business expenses, rental income, Social Security benefits, workers’ compensation, unemployment, veterans’ benefits, pensions, interest, dividends, lottery and gambling winnings, and military fringe benefits.2Connecticut eRegulations. Section 46b-215a-1 – Definitions A few sources are excluded: Supplemental Security Income, public assistance grants, earned income tax credits, and child support received for other children in the home.
The Three-Year Review Option
You have another route that does not require proving anything changed. Either parent can request a review of the support order every three years, and the reviewer simply compares the current order against the guidelines and adjusts it if the numbers no longer match.3Justia Law. Connecticut Code 46b-231 – Family Support Magistrate Division
This exists because federal law requires every state to offer periodic reviews. Under 42 U.S.C. § 666(a)(10), states must review and, if appropriate, adjust child support orders at least every three years on request, with no proof of changed circumstances needed.4Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures If your order is more than three years old and you have not asked for a review, you are entitled to one regardless of whether your life has changed. Want a review sooner than three years? You are back to proving a substantial change or a 15% deviation.
How to File a Motion for Modification
The modification starts with a Motion for Modification, Form JD-FM-174, filed with the Superior Court that issued the original order.5State of Connecticut Judicial Branch. Motion for Modification The filing fee for a post-judgment motion to modify a family relations matter is $180.6Connecticut Judicial Branch. Court Fees If you cannot afford that, apply for a waiver using Form JD-FM-75, which asks the court to find you indigent.7Connecticut Judicial Branch. Application for Waiver of Fees
If your case is in the IV-D system (meaning Support Enforcement Services is involved, usually because the family receives public assistance or has applied for enforcement services), the motion is heard by a family support magistrate rather than a Superior Court judge. Family support magistrates have full authority to decide modifications in these cases, and SES can complete the filing on your behalf, saving you the paperwork and the fee.3Justia Law. Connecticut Code 46b-231 – Family Support Magistrate Division8Connecticut Judicial Branch. Child Support FAQs SES can also initiate a modification on its own when it finds an order substantially deviates from the guidelines.
After filing, the court issues a summons that a state marshal serves on the other parent, then returns proof of service to the court.9State of Connecticut State Marshal Commission. State Marshal Commission Manual – Section 4 Civil Process The service date is the single most important date in your case, for reasons covered below.
Once service is complete, the court schedules a hearing. The other parent can object or file a counter-motion. At the hearing you present your evidence, the other parent presents theirs, and the judge or magistrate rules. If a party fails to appear, the court can enter a default ruling on the evidence before it.
What to Bring to the Hearing
The case is decided on financial evidence. Thin or inconsistent paperwork is the fastest way to lose.
Every parent must file a Financial Affidavit under oath. Connecticut uses two versions: the short form, JD-FM-6-SHORT, if your gross annual income and total net assets are each under $75,000, and the long form, JD-FM-6-LONG, if either figure is higher.10Judicial Branch of the State of Connecticut. Financial Affidavit – Form JD-FM-6-LONG The affidavit asks for income, expenses, debts, and assets on a weekly basis, and income must be computed from at least the last 13 weeks of earnings.11Connecticut Judicial Branch. Filling Out and Filing a Financial Affidavit Short Form You sign it under oath, so false information can lead to perjury consequences and will wreck your credibility if discovered.
Bring everything that corroborates the affidavit: recent pay stubs, the last two years of tax returns and W-2s, and documentation of any other income. Self-employed parents should bring profit and loss statements and business tax filings. If you are claiming higher expenses for the child, bring medical records, tuition invoices, therapy bills, and childcare receipts. If you believe the other parent earns more than they are reporting, gather what you can: promotion announcements, business filings, and other records inconsistent with the income they claim. Courts see creative accounting regularly.
Voluntary Unemployment Can Sink a Reduction Request
Losing a job does not automatically cut your support. The court looks at whether the unemployment was voluntary and what you have done to find new work. If a parent quits or deliberately takes lower-paying work to shrink the obligation, the court can calculate support on earning capacity rather than actual income. That is called imputed income, and it is one of the most common reasons modification requests fail.
When the New Amount Starts
This is the trap that costs people real money. A Connecticut court cannot make a modification retroactive to any point before you filed your motion. The earliest the new amount can reach back is the date the other parent was served with notice of the pending motion.1Justia Law. Connecticut Code 46b-86 – Modification of Alimony or Support Orders and Judgments Every week you wait to file and serve is a week the old order stays locked in.
The rule has federal backing. Under 42 U.S.C. § 666(a)(9), every child support payment becomes a judgment by operation of law on the date it comes due. Once that happens, no court, including a bankruptcy court, can retroactively reduce or forgive the debt. The only exception is for the period while a modification motion is pending, measured from the date the other parent received notice.4Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures
Practical consequence: if your circumstances have changed, file now, and push the marshal to serve quickly. The hearing may be months out, but the clock that matters starts on the service date.
Keep Paying While the Motion Is Pending
If you are the paying parent and genuinely cannot keep up, the worst move is to stop paying. Every missed payment becomes an enforceable judgment the moment it comes due, and no future modification can erase it. File the motion immediately, get the other parent served, and keep paying what you can while the case runs. The modification, if granted, will only cover the period from the service date forward, and arrears built up before then will stay owed in full.
If the Court Says No
A denial leaves the existing order in place. You can file again, but only on genuinely new facts; courts track repeat filings, and the fee waiver form itself allows denial when a pattern of frivolous filings exists.7Connecticut Judicial Branch. Application for Waiver of Fees If the court made a legal error you can appeal, but appeals are limited to mistakes of law, not disagreements about how the judge weighed the evidence. That is why the quality of your initial hearing presentation matters far more than any appeal.