How to Modify Child Support in Colorado

Life changes after divorce — incomes shift, kids get older, parenting schedules evolve. Colorado allows you to modify child support and parenting time when circumstances have changed substantially since the original order. But "substantially" has a specific legal meaning, and the process requires court approval.

When You Can Modify Child Support

Colorado courts will consider modifying child support when there has been a "substantial and continuing change in circumstances" since the last order. The clearest threshold: if running the current numbers through the Colorado child support guidelines produces an amount that differs by 10% or more from the existing order, the court presumes the change is substantial.

Common qualifying changes include:

• Income change — either parent's income has increased or decreased significantly (job loss, promotion, new career, disability)
• Parenting time change — the overnight schedule has shifted enough to change the calculation
• New children — either parent has additional children from a new relationship
• Insurance cost changes — health insurance premiums for the children have changed
• Childcare cost changes — daycare or after-school care expenses have started or stopped
• Emancipation — a child reaches age 19; if still in high school, support generally continues until the end of the month following graduation, subject to statutory or court-ordered exceptions

How to File for a Modification

1. Run the current numbers. Use the Colorado Child Support Guidelines worksheet (or the state's online calculator) with current income figures and the current parenting schedule. If the new calculation differs by 10% or more from the existing order, you have grounds.

2. File a Motion to Modify. File in the same court that entered the original order. Include the current Sworn Financial Statement (JDF 1111), mandatory-disclosure paperwork, and child support worksheet required for your filing.

3. Serve the other parent. The motion and supporting documents must be properly served on the other parent, giving them time to respond.

4. Hearing or stipulation. If both parents agree on the new amount, use the court's stipulation process (JDF 1404); a disputed change uses the Motion to Modify Child Support (JDF 1403) and may proceed by documents or a hearing.

5. Court enters new order. A modification may be applied retroactively to the date the motion was filed, but do not assume it applies to an earlier date; file promptly when a qualifying change occurs.

Modifying Parenting Time

Changing the allocation of parental responsibilities (Colorado's term for custody and parenting time) requires a separate motion and a higher burden:

• For minor adjustments (shifting pickup times, adjusting holiday schedules), courts are generally flexible.
• For substantial changes (switching primary residence, significantly changing overnight percentages), you must show the change is in the child's best interests and that there has been a material change in circumstances.
• Within the first two years after the original order, Colorado's current self-help instructions generally say you must wait two years to request a change in which parent the child is with the majority of the time. Restrictions and major moves use separate standards and forms.

Spousal Maintenance Modifications

Spousal maintenance can be changed if circumstances make the current arrangement unfair or no longer workable. It can end if either party dies, the agreed payment period ends, the recipient remarries, or the court orders termination; the decree and current court instructions control.

Maintenance terminates automatically upon the death of either party or the remarriage of the recipient (unless the order states otherwise).

What You Cannot Change

The property division in your original decree is generally final — reopening a judgment requires separate grounds. Only ongoing obligations (support, maintenance, parenting time) are ordinarily addressed through post-decree modification procedures.

The Colorado After-Divorce Checklist covers the modification process and includes worksheets for tracking changed circumstances that may warrant a new filing.

See more Colorado guides →