Child Support in Miami County

Reviewed by Stephanie Green · Managing Partner & Co-Founder · Last updated June 11, 2026

Miami County, Ohio · Troy

Ohio sets child support with the 2024 Income Shares worksheet, and orders are administered through the county Child Support Enforcement Agency (CSEA). In Miami County, support is decided inside a divorce or dissolution in the General Division for married parents, or in the Juvenile Court for unmarried parents — and existing orders can be modified when circumstances change.

How is child support set in Miami County, Ohio?

Support is calculated on the Ohio Child Support Computation Worksheet (2024 Income Shares) and entered on a DR-16 order. For married or divorcing parents, support is decided inside the divorce or dissolution in the General Division; for unmarried parents, the Juvenile Court sets it ($135 per child to file). A IV-D application opens a case with the Miami County CSEA, which collects support by wage withholding through Ohio Child Support Payment Central and enforces it. To change an existing order, file a motion to modify with a current income/expense affidavit and a new worksheet.

Ohio Child Support by the Numbers

2024 Year Ohio's updated Income Shares support schedule took effect Source: Ohio Revised Code § 3119.021
10% Change in the calculated amount that justifies a modification Source: Ohio Revised Code § 3119.79
3 years How often either parent can request an administrative review Source: Ohio Revised Code § 3119.60
Age 18 When support normally ends — or high-school graduation, whichever is later Source: Ohio Revised Code § 3119.86

What Counts in an Ohio Child Support Calculation

What the worksheet counts	Counts toward support?	Notes
Both parents' gross income	Yes	Wages, salary, commissions, bonuses, and self-employment earnings
Health insurance for the children	Yes	Credited to the parent who pays the premium
Work-related childcare	Yes	Daycare and after-school costs are added in
Parenting time	Yes	Adjustments apply for substantial or equal parenting time
Imputed income	Sometimes	Added when a parent is voluntarily unemployed or underemployed
A new spouse's income	No	Only the two parents' incomes are counted

Where to File: Miami County Court of Common Pleas, General Division

215 W. Main Street, Troy, OH 45373
Phone: (937) 440-3930
Hours: Monday–Friday (confirm current hours with the Clerk of Courts, (937) 440-6046)
Website: www.miamicountyohio.gov/common-pleas/

Juvenile Branch (Never-Married Parents)

Miami County Juvenile Court
2040 North County Road 25-A, Troy, OH 45373
Phone: (937) 440-5970
Hours: Monday–Thursday 8:00 a.m.–4:00 p.m.; Friday 8:30 a.m.–4:00 p.m. (Local Juv. R. 18.01)

Child Support is the right path if…

You need the court to set a child-support order, or to change an existing one.
Your income, the other parent's income, parenting time, or the children's needs have changed.
You want CSEA to collect support by wage withholding and enforce the order.
You can complete the Ohio Child Support Computation Worksheet with current income figures.

Filing Fees

Married parents: support set inside the divorce/dissolution deposit · Unmarried parents: $135 per child in Juvenile Court (no fee to CSEA) · Modification: confirm the post-decree deposit with the Clerk · payments routed through Ohio Child Support Payment Central.

Forms & Filing Packets

Support inside a divorce or dissolution (married parents) — Part of the divorce/dissolution deposit — confirm at (937) 440-6046

Support is set with the worksheet and the DR-16 order as part of the divorce or dissolution and administered through CSEA.

Ohio Child Support Computation Worksheet (2024 Income Shares) — Run the official Ohio Child Support Calculator, print, and sign. Required any time the court sets or changes support.
DR-16 Support Order (Word) — The Domestic Relations child-support order worksheet/entry (Local R. 8.12), filed with the support computation.
IV-D Application (dissolution) — Opens a CSEA child-support case so support can be collected and enforced. Filed with a dissolution involving children.
Miami County Child Support Enforcement Agency (CSEA) — Opens IV-D child-support cases, calculates support, collects by wage withholding through Ohio Child Support Payment Central, and enforces orders. No filing fee is charged to CSEA (Local Juv. R. 4.06).

Support for unmarried parents (Juvenile Court) — $135.00 per child (Juvenile Court); no fee to CSEA

Filed in the Juvenile Court along with a parentage/custody complaint; the court sets support on the worksheet ($135 per child to file).

Complaint for Allocation of Parental Rights & Responsibilities (Ohio SC Form 23) — Asks the Juvenile Branch to name a residential parent and legal custodian and set a parenting-time schedule when the parents were never married.
Ohio Child Support Computation Worksheet (2024 Income Shares) — Run the official Ohio Child Support Calculator, print, and sign. Required any time you ask the court to set or change support.
Health Insurance Affidavit (Ohio SC Affidavit 4) — Discloses whether health insurance is available for the children through either parent's employer, so the court can order medical support.
Miami County Juvenile Court — Clerk's Office — The Juvenile Court (2040 N. County Rd 25-A, Troy; (937) 440-5970, option 2) decides parentage, custody, support, and parenting time for unmarried parents and non-parent legal custody. Post-complaint documents under 26 pages with no deposit may be emailed to juvenilefile@miamicountyohio.gov.
Miami County Child Support Enforcement Agency (CSEA) — Opens IV-D child-support cases, calculates support, collects by wage withholding through Ohio Child Support Payment Central, and enforces orders. No filing fee is charged to CSEA (Local Juv. R. 4.06).

Modify an existing support order — Confirm the post-decree deposit with the Clerk, (937) 440-6046

File a post-decree motion to modify support with a current income/expense affidavit, a new worksheet, and a Magistrate's Order for Hearing (Local R. 8.14).

Motion for Change of Child Support (Ohio SC Form 28) — The Ohio uniform motion to change child support, medical support, or the tax exemption after a change of circumstances. File in the division that issued the order.
Post-decree Affidavit 1 — Income & Expenses — Your current income and expenses, filed with a post-decree motion to modify support.
Ohio Child Support Computation Worksheet (2024 Income Shares) — Run the official Ohio Child Support Calculator, print, and sign. Required any time the court sets or changes support.
Magistrate's Order for Hearing (Word) — The proposed order setting your post-decree motion for hearing; file it with the motion (Local R. 8.14).

How to File Child Support in Miami County

Identify the right court. Married or divorcing parents set support inside the divorce or dissolution in the General Division; unmarried parents file in the Juvenile Court.
Run the worksheet. Use the Ohio Child Support Computation Worksheet (2024 Income Shares) with current income for both parents, then print and sign it.
Open a CSEA case. File a IV-D application so the Miami County CSEA can collect by wage withholding through Ohio Child Support Payment Central and enforce the order.
To modify, show a change of circumstances. File a post-decree motion to modify with a current income/expense affidavit, a new worksheet, and a Magistrate's Order for Hearing (Local R. 8.14).

Miami County Practice Notes

CSEA collects and enforces support. The Miami County CSEA opens IV-D cases, calculates support, collects by automatic wage withholding through Ohio Child Support Payment Central, and enforces orders through license suspension, tax intercept, credit reporting, and contempt referrals. No filing fee is charged to CSEA (Local Juv. R. 4.06).
Support follows the 2024 Income Shares worksheet. Ohio uses the Income Shares model: both parents' incomes are combined and apportioned, then adjusted for parenting time, health-insurance premiums, child-care costs, and other factors. Run the official Ohio Child Support Calculator and file the signed worksheet whenever support is set or changed.

Frequently Asked Questions

What does the Miami County CSEA do, and what is a IV-D application?: The Miami County Child Support Enforcement Agency (CSEA), part of Job & Family Services, opens IV-D child-support cases, calculates support, collects it by automatic wage withholding through Ohio Child Support Payment Central, and enforces orders (license suspension, tax intercept, contempt referrals). A IV-D Application opens that case and is filed whenever the court sets a support order. No filing fee is charged to CSEA (Local Juv. R. 4.06).
We were never married — which Miami County court decides custody?: The Juvenile Court (Judge Scott Altenburger), 2040 N. County Road 25-A, Troy; (937) 440-5970, decides custody, parenting time, support, and parentage for unmarried parents under R.C. 2151.23. Married or divorcing parents have those issues decided inside the divorce or dissolution in the General Division. Grandparent and other non-parent custody requests are always filed in Juvenile Court.
How much does it cost to file for custody or paternity in Miami County Juvenile Court?: The Juvenile Court charges $135.00 per child for a paternity, allocation of parental rights (custody), or visitation petition, due at filing, plus $2.00 per subpoena issued. No filing fee is charged to the Miami County CSEA or Children's Services Board (Local Juv. R. 4.06). Court costs are assessed at final disposition, and an indigency application may be filed to seek a waiver (Local Juv. R. 4.02–4.03).
How do I modify custody or child support after a Miami County decree?: Because the General Division keeps continuing jurisdiction, post-decree motions stay in your original DR case. File the post-decree motion with the matching affidavits (post-decree Affidavit 1 income/expenses; Affidavit 3 parenting; Affidavit 4 health insurance, as applicable) and a Magistrate's Order for Hearing (Local R. 8.14). Changing which parent is the residential parent/legal custodian requires a change in circumstances and a best-interest finding under R.C. 3109.04; a change in income supports a child-support modification with a new worksheet.
How does shared parenting work in Miami County?: The court can name one parent the residential parent and legal custodian (sole custody) or order shared parenting on a filed plan. Shared parenting requires a written Shared Parenting Plan (Form 20) addressing physical living arrangements, the holiday and vacation schedule, decision-making, transportation, school and health-care decisions, support, and dispute resolution. The court approves a plan only if it is in the child's best interest under R.C. 3109.04.

Free Local Resources in Miami County

Miami County Clerk of Courts (Common Pleas / Domestic Relations). 215 W. Main Street, Troy, OH 45373; (937) 440-6046. Files all Domestic Relations documents and collects deposits through the e-file system (mandatory as of June 1, 2026). Confirm the current divorce/dissolution/legal-separation deposit here, or file an Affidavit of Indigency to seek a waiver.
Miami County Domestic Relations Forms. https://www.miamicountyohio.gov/domestic-relations-forms/ — the county's DR forms, organized by case type, plus Appendix A (the required-filings checklist). Do not print forms double-sided.
Parenting seminar — "Helping Children Succeed After Divorce". https://www.miamicountyohio.gov/parenting-seminar/ — required for parents of children under 18 in a divorce, dissolution, or paternity case (Local R. 8.06). Sessions are Wednesday mornings (~2.5 hours); complete before the dissolution decree is filed or within 45 days of service. Reschedule through the assigned Magistrate's office.
Miami County Juvenile Court. 2040 North County Road 25-A, Troy, OH 45373; (937) 440-5970 (Clerk, option 2); juvenilefile@miamicountyohio.gov. Judge Scott Altenburger. Decides parentage, custody, support, and parenting time for unmarried parents and non-parent legal custody. Paternity/custody/visitation: $135.00 per child (no fee to CSEA or Children's Services).
Miami County Child Support Enforcement Agency (CSEA). https://www.miamicountyohio.gov/child-support-enforcement-agency-csea/ — opens IV-D cases, calculates support, collects by wage withholding through Ohio Child Support Payment Central, and enforces orders. No filing fee is charged to CSEA (Local Juv. R. 4.06).
Miami County Probate Court. 215 W. Main Street, Troy, OH 45373; (937) 440-6050. Judge Scott Altenburger. Handles adoptions, name changes, marriage licenses, and minor guardianships. Accepts the Supreme Court of Ohio Probate standardized forms plus local forms.

Related to your child support case

Paternity & Custody — Establish parentage and build a parenting plan that protects your children.
Post-Decree Modification — Update custody, support, or parenting orders after your case ends.
Spousal Support — Pursue or respond to alimony requests during and after divorce.

Related guides

In-depth, attorney-written guides on child support and related Ohio family law topics.

Child Support Calculation in Ohio: How the Formula Works — Ohio calculates child support with the income shares model, combining both parents' incomes to set a shared obligation. Here's how the formula works and what changes the bottom line.
How to Modify Child Support in Ohio — Child support orders aren't permanent. When income or circumstances change substantially, Ohio lets you modify support — through a CSEA review or a court motion. Here's how.

Keep exploring

Ohio Child Support guide — Statewide overview of child support in Ohio.
Dayton family law — Local attorneys and courts serving the Dayton metro.
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Call (513) 643-1969 or email support@gavvl.com.