Child support in Wyoming

Wyoming uses the income-shares model: both parents' incomes count, and each parent pays a share of the child's support. To open a case, contact the Wyoming Child Support Program, Wyoming Department of Family Services at 307-777-6948.

Wyoming Child Support Program, Wyoming Department of Family ServicesCall 307-777-6948Apply onlineAgency website

Checked against official sources: Oct 25, 2026. · Free letters and checklist ↓

How much child support in Wyoming?

Both parents' net monthly incomes (after taxes, Social Security, the children's health coverage, other support paid and mandatory pension deductions) are combined and run through the statutory tables for the number of children. The total is split between the parents in proportion to their net incomes. Special formulas apply when each parent has the children more than 25% of overnights, or when the parents split custody.

Law: W.S. 20-2-303, 20-2-304, 20-2-307

We don't estimate Wyoming's amount here: its formula uses both parents' incomes and other facts, and a home-made number could mislead you. The official tool gives the real starting number:

Official Wyoming child support calculator

Open a child support case in Wyoming

Agency
Wyoming Child Support Program, Wyoming Department of Family Services
Phone
307-777-6948
Apply
Apply online
How to open a case

Apply online, or ask your local child support office for a paper application. There are no income limits; parents and caretakers can apply whether or not they get public assistance. You can also ask the district court for support in a divorce, paternity or support case.

Application fee

$0. The Wyoming Child Support Program does not charge an application fee.

Law: Policy Manual 5.2

Source: Parents & Caregivers page

Yearly fee

$35 once each federal fiscal year (starting Oct. 1), withheld from your payment after $550 has been collected for you.

Source: Wyoming Child Support FAQ

Forms
Paternity (legal fatherhood)

Unmarried parents can sign an Affidavit Acknowledging Paternity at the hospital (free), or later in front of a notary and file it with the Wyoming Office of Vital Statistics. If you are not sure who the father is, the Child Support Program can help with DNA (genetic) testing. Paternity questions: 307-777-6948.

Checklist: what to bring to open a case

Wyoming child support by topic

How support is calculated in Wyoming

The model, the percentages or the official calculator, and low-income rules.

Change child support in Wyoming

When you can ask, how to ask, and a review letter.

Collect unpaid support in Wyoming

Collection tools, interest and license rules, and a letter.

When support ends in Wyoming

The end age, high school and disability rules.

How child support is figured in Wyoming

Model
Income shares
How it works

Both parents' net monthly incomes (after taxes, Social Security, the children's health coverage, other support paid and mandatory pension deductions) are combined and run through the statutory tables for the number of children. The total is split between the parents in proportion to their net incomes. Special formulas apply when each parent has the children more than 25% of overnights, or when the parents split custody.

Low income

Self-support reserve: if the paying parent's net income minus the federal poverty line for one person is less than the table amount, support is set at that difference. (W.S. 20-2-304(f))

Official calculator
Official Wyoming child support calculator
Health insurance and medical costs

Every order must include medical support. One or both parents must provide insurance if it is available at reasonable cost and usable by the children, and both parents share uninsured costs and deductibles as cash medical support in the proportion the order sets. Proof of insurance is due within 60 days. (W.S. 20-2-401)

Law: W.S. 20-2-303, 20-2-304, 20-2-307

Change a child support order in Wyoming

When a change is allowed

If the order is more than 6 months old (or not adjusted in the last 6 months), any party can ask for a review if the guideline amount would change by 20% or more per month; that counts as a change of circumstances. You can also ask at any time for a substantial change of circumstances. Every 3 years, either parent can ask for a review without showing any change. Starting POWER (TANF), Medicaid, SNAP or SSI is a substantial change. Support cannot be changed for past months, except by agreement or back to the date the other side was served with the petition. (W.S. 20-2-311(a), (d))

How to ask

Ask your local child support office for a review (you need an open case), or file the court's Child Support Modification packet yourself (Petition for Modification of Child Support and Judgment for Arrears) in district court.

Forms

Can I ask for a change? Check your situation

Wyoming's rule: If the order is more than 6 months old (or not adjusted in the last 6 months), any party can ask for a review if the guideline amount would change by 20% or more per month; that counts as a change of circumstances. You can also ask at any time for a substantial change of circumstances. Every 3 years, either parent can ask for a review without showing any change. Starting POWER (TANF), Medicaid, SNAP or SSI is a substantial change. Support cannot be changed for past months, except by agreement or back to the date the other side was served with the petition. (W.S. 20-2-311(a), (d))

Law: W.S. 20-2-311(a), (d)

Until a new order is made, the current amount is still owed. A change can count only from the date the other parent gets notice of your request, so ask soon.

Law: 42 U.S.C. 666(a)(9)

How to ask in Wyoming: Ask your local child support office for a review (you need an open case), or file the court's Child Support Modification packet yourself (Petition for Modification of Child Support and Judgment for Arrears) in district court.

Ask the agency to review (change) your order

Collect unpaid child support in Wyoming

Arrears means support that is past due. The child support agency can use these tools to collect it:

Collection tools
  • Income withholding (wages, unemployment, workers' compensation, disability, Social Security)
  • Federal tax refund intercept
  • Passport denial
  • Credit bureau reporting (generally over $1,000 owed)
  • Lien and levy on bank accounts
  • Driver's, professional and occupational license suspension
  • Wyoming Game & Fish license suspension
  • Attaching real or personal property
  • Civil contempt in district court
  • Federal prosecution
License suspension

By law, a court can order a driver's license withheld, suspended or restricted when you are behind on court-ordered support, unless you pay all arrears or enter an approved payment plan (W.S. 20-6-111). The program's policy for administrative suspension is arrears of at least $2,500 and no full monthly payment in the last 90 days, for parents not receiving TANF.

Law: Policy Manual 9.7

Contempt of court

The program can bring civil contempt actions through the district court.

Source: Parents & Caregivers page

Law: W.S. 20-6-111, 20-6-112, 20-6-201 et seq.

Ask the agency to collect unpaid support

When child support ends in Wyoming

Support ends

18 (age of majority); support continues to age 20 while the child attends high school or an equivalent program full time

Exceptions

A parent's duty continues past 18 for a child who is mentally or physically disabled and cannot support themself. Support also ends if the parents marry each other, or the child dies or is emancipated.

Law: W.S. 14-1-101, 14-2-204(a), 20-2-313, 20-2-316

When does support end? Check your situation

Wyoming's rule: 18 (age of majority); support continues to age 20 while the child attends high school or an equivalent program full time

Law: W.S. 14-1-101, 14-2-204(a), 20-2-313, 20-2-316

Your own order may set a different end date, for example when the parents agreed to one. Read it.

Free help in Wyoming

Official self-help

Free letters and checklist

Ask the agency to review (change) your order

A letter to the child support agency asking for a review and adjustment.

Ask the agency to collect unpaid support

A letter asking the agency to enforce the order and collect what is past due.

Checklist: what to bring to open a case

IDs, birth certificates, the other parent's details and your papers, with Wyoming's agency contact.

Good to know in Wyoming

  • Wyoming sets support from both parents' net income, not gross income. (W.S. 20-2-303, 20-2-304)
  • Support can continue to age 20 for a child still in high school full time. (W.S. 14-2-204(a)(iii))
  • Overtime counts as income only if the court finds, looking at the last 24 months, that it is likely to continue. (W.S. 20-2-303(a)(ii))

Federal rules in every state

  • Applying. If you don't get TANF, Medicaid or foster care help, a state may charge an application fee of up to $25 to open a child support case. Law: 42 U.S.C. 654(6)(B)(i)
  • Yearly fee. If you never got TANF and the agency collected at least $550 for you in a year, the state charges a $35 yearly fee. It can come out of your support, but never out of the first $550. Law: 42 U.S.C. 654(6)(B)(ii)
  • Review every 3 years. If your case is with the child support agency, either parent can ask it to review the order every 3 years and adjust it to the guidelines. Law: 42 U.S.C. 666(a)(10)(A); 45 CFR 303.8
  • Past-due support. Each unpaid payment becomes a judgment on the day it is due. It can't be lowered later, except back to the date the other parent got notice of a request to change the order. Law: 42 U.S.C. 666(a)(9)
  • Tax refunds. The federal government can take a federal tax refund to pay past-due child support. Law: 42 U.S.C. 664
  • Passports. A parent who owes more than $2,500 in past-due support can be refused a passport. Law: 42 U.S.C. 652(k)
  • Pay withholding limit. For support, up to 50% of take-home pay can be withheld if the parent supports another spouse or child, or 60% if not. It is 55% or 65% when support is more than 12 weeks behind. Law: 15 U.S.C. 1673(b)
  • How long support lasts. How long support lasts follows the law of the state that made the order, even if you move. Law: 28 U.S.C. 1738B(h)(2)

Questions about child support in Wyoming

How is child support calculated in Wyoming?

Both parents' net monthly incomes (after taxes, Social Security, the children's health coverage, other support paid and mandatory pension deductions) are combined and run through the statutory tables for the number of children. The total is split between the parents in proportion to their net incomes. Special formulas apply when each parent has the children more than 25% of overnights, or when the parents split custody.

Is there an official child support calculator for Wyoming?

Yes: Official Wyoming child support calculator.

What if the paying parent has a low income in Wyoming?

Self-support reserve: if the paying parent's net income minus the federal poverty line for one person is less than the table amount, support is set at that difference. (W.S. 20-2-304(f))

How do I apply for child support in Wyoming?

Apply online, or ask your local child support office for a paper application. There are no income limits; parents and caretakers can apply whether or not they get public assistance. You can also ask the district court for support in a divorce, paternity or support case.

Does it cost money to open a child support case in Wyoming?

$0. The Wyoming Child Support Program does not charge an application fee.

Is there a yearly fee for child support services in Wyoming?

$35 once each federal fiscal year (starting Oct. 1), withheld from your payment after $550 has been collected for you.

When can child support be changed in Wyoming?

If the order is more than 6 months old (or not adjusted in the last 6 months), any party can ask for a review if the guideline amount would change by 20% or more per month; that counts as a change of circumstances. You can also ask at any time for a substantial change of circumstances. Every 3 years, either parent can ask for a review without showing any change. Starting POWER (TANF), Medicaid, SNAP or SSI is a substantial change. Support cannot be changed for past months, except by agreement or back to the date the other side was served with the petition. (W.S. 20-2-311(a), (d))

How do I ask to change child support in Wyoming?

Ask your local child support office for a review (you need an open case), or file the court's Child Support Modification packet yourself (Petition for Modification of Child Support and Judgment for Arrears) in district court.

What happens if child support is not paid in Wyoming?

Arrears means support that is past due. The child support agency can use these tools to collect it: Income withholding (wages, unemployment, workers' compensation, disability, Social Security); Federal tax refund intercept; Passport denial; Credit bureau reporting (generally over $1,000 owed); Lien and levy on bank accounts; Driver's, professional and occupational license suspension; Wyoming Game & Fish license suspension; Attaching real or personal property; Civil contempt in district court; Federal prosecution.

Can a license be suspended for unpaid child support in Wyoming?

By law, a court can order a driver's license withheld, suspended or restricted when you are behind on court-ordered support, unless you pay all arrears or enter an approved payment plan (W.S. 20-6-111). The program's policy for administrative suspension is arrears of at least $2,500 and no full monthly payment in the last 90 days, for parents not receiving TANF.

Can a parent be held in contempt for not paying in Wyoming?

The program can bring civil contempt actions through the district court.

When does child support end in Wyoming?

18 (age of majority); support continues to age 20 while the child attends high school or an equivalent program full time

Does child support continue while my child finishes high school in Wyoming?

18 (age of majority); support continues to age 20 while the child attends high school or an equivalent program full time

Can child support continue past the usual age in Wyoming?

A parent's duty continues past 18 for a child who is mentally or physically disabled and cannot support themself. Support also ends if the parents marry each other, or the child dies or is emancipated.

How is paternity established in Wyoming?

Unmarried parents can sign an Affidavit Acknowledging Paternity at the hospital (free), or later in front of a notary and file it with the Wyoming Office of Vital Statistics. If you are not sure who the father is, the Child Support Program can help with DNA (genetic) testing. Paternity questions: 307-777-6948.

Who pays for the child's health insurance in Wyoming?

Every order must include medical support. One or both parents must provide insurance if it is available at reasonable cost and usable by the children, and both parents share uninsured costs and deductibles as cash medical support in the proportion the order sets. Proof of insurance is due within 60 days. (W.S. 20-2-401)

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Sources

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