Modifying Child Support After Job Loss, Disability or Incarceration in Missouri

By the FigureMyTax Editorial Team · How we calculate

Missouri child support does not drop on its own after a job loss or incarceration. File a motion and serve it promptly, because only installments after personal service can change; the court considers earning capacity.

Can you lower child support after a job loss in Missouri?

Yes, by motion, if the job loss is a substantial and continuing change that makes the terms unreasonable (RSMo 452.370.1). A long-lasting drop in income can produce a guideline amount 20% or more lower, which is a prima facie showing if the existing order followed the presumed amount. A change reaches back only to personal service (452.370.6), so serve as soon as the job ends.

Will Missouri use earning capacity if you lose or leave a job?

In deciding whether a substantial change has occurred the court considers the earning capacity of a party who is not employed (452.370.1). A temporary layoff or a voluntary cut in work is easier to challenge than a lasting loss, so keep a record of your job search.

Can Missouri child support be lowered while incarcerated?

We found no Missouri provision in the sections we read that sets support aside during incarceration. Federal rules say incarceration should not be treated as voluntary unemployment in setting or modifying support (45 CFR 302.56(c)(3)). The order does not change on its own: file a motion and serve it.

Can unemployment benefits be part of the picture?

Unemployment compensation is income under the guidelines the court applies, so a drop in wages can be partly offset by benefits. Bring the award letter so the court sees the real figure.

Does the court weigh the other parent’s finances too?

Yes. The court considers all financial resources of both parties (452.370.1), so a rise in the other parent’s income can offset a drop in yours. Bring both sides’ pay stubs if you have them.

Can I ask for abatement while the motion is pending?

The sections we read do not describe a temporary reduction before the court rules; the order changes only for installments accruing after personal service. Ask the court for an early hearing and keep paying what you can.

What if the State is owed public assistance?

If a parent assigned support rights to the Family Support Division as a condition of TANF and either party moves to reduce support, the State must be named as a party and served by certified mail on the division director (452.370.5). Include that in your plan.

What if the new job pays less?

A lower-paying job can still be a lasting change if the reason is not a choice to avoid support. Bring proof of the reason, the pay and your search record.

Does a new spouse’s income count?

The court considers the extent to which a party’s reasonable expenses are or should be shared by a spouse or another person they live with (452.370.1). Expect questions about household finances.

What proof helps?

What should you do first?

1. File the motion and serve the other parent now.
2. Keep paying what you can: unpaid support draws interest (see how Missouri interest works).
3. Check your numbers in the Missouri child support modification calculator.

Frequently asked questions

Official sources

• RSMo 452.370: modification of support
• RSMo 452.340: child support; termination
• RSMo 454.496: motion to modify in IV-D cases
• 42 U.S.C. 666(a)(9): no retroactive modification of support already due
• 45 CFR 302.56: federal guideline requirements

This is general information, not legal advice. It is based on the cited Missouri statutes, rules and court opinions, and every case turns on its own facts. Confirm how the law applies to your situation with a licensed Missouri attorney.