Quick answer: Child support modification in Wyoming has three routes: a 20% or larger monthly gap for an order over six months old, any substantial change at any time, or a three-year review with no change shown. Changes run only from service of the petition.
This Wyoming child support modification calculator applies Wyo. Stat. 20-2-311. Enter your current order and the amount the guidelines give today (you can get it from the Wyoming child support calculator), say which route applies, and it shows whether the order qualifies and what the gap adds up to.
Wyoming child support modification at a glance
| Rule | What Wyoming says |
|---|---|
| 20% rule | For an order entered more than six months before the petition, a guideline result that changes support by 20% or more per month is a change of circumstances sufficient to modify (Wyo. Stat. 20-2-311(a)) |
| Substantial change | A modification on a substantial change of circumstances may be sought at any time (20-2-311(a)) |
| Three-year review | Every three years, on request, the court reviews and adjusts the order without a showing of change (20-2-311(a)) |
| Listed changes | Starting POWER, Medicaid, SNAP or SSI is a substantial change requiring modification (20-2-311(a)) |
| Start date | No retroactive modification except by agreement or from the date notice of the petition was served (20-2-311(d)) |
| Fees | A party who will not accept the presumptive amount can be ordered to pay the other side’s fees if the court does not deviate (20-2-311(b)) |
| State guidance | Temporary income changes likely will not qualify; custody changes may (Wyoming Judicial Branch) |
How does child support modification work in Wyoming?
- Know the three routes. See what counts as a substantial change in Wyoming.
- File and serve promptly. See how to modify child support in Wyoming.
- Income problems and incarceration. See child support after job loss or incarceration in Wyoming and, for what stays owed, the Wyoming child support arrears calculator.
What does this modification calculator check?
The calculator tests the 20% line for an order more than six months old, the three-year review and the substantial-change ground you report, and shows the monthly gap and the accrued difference from service. It cannot decide whether a court finds a change substantial or temporary.
Frequently asked questions
How much does Wyoming child support have to change to be modified?
For an order more than six months old, a guideline result that changes support by 20% or more a month; or any substantial change at any time.
Can I get a Wyoming review without a change in circumstances?
Yes. Every three years, on request, the court reviews and adjusts the order with no change shown.
From what date can Wyoming change child support?
Only from the date notice of the petition was served, unless the parties agree.
Does a temporary income change modify Wyoming child support?
Temporary changes in income likely will not qualify.
Does starting SNAP or SSI change Wyoming child support?
Starting POWER, Medicaid, SNAP or SSI is a substantial change requiring modification.