By April D. Jones, Founder and CEO, Jones Law Firm, PC
Updated June 2026
The layoff came on a Tuesday. By Thursday he was sitting in my office with the support order in his hand, reading the monthly number out loud like it might change if he said it slowly enough. He had paid it without fail for three years. He had never been late. And now the job that made the number possible was gone, and the order on the table still said what it said.
He asked me the question almost everyone asks in some form. “It changes now, right? They have to lower it.” Across town, a different parent was asking the opposite question. Her ex had just landed a much bigger contract, the kind that makes the local news, and she wanted to know if the support she received could finally go up to match it.
Two parents, opposite situations, the same real question underneath. Can this number actually change, and what do I have to do to change it? Your life changing and your order changing are not the same event, and that distinction is the one most people miss. One does not cause the other on its own.
The One Rule That Governs Every Change
Before we go through the life events, you need the rule they all run through, because it decides whether any of these stories ends in a new number.
Under C.R.S. § 14-10-122, a Colorado child support order can be modified when the change in circumstances is substantial and continuing. Run the numbers again with the current facts, and if the result differs from your existing order by at least ten percent, up or down, the change is substantial enough to count. It also has to last. A change that is real but temporary, the slow month, the seasonal dip, the one-time bonus, does not qualify, because the court is looking for a change that will hold.
So every life event below runs through the same two questions. Does it move the number by at least ten percent? And will it last? If both are yes, you may have a case to change the order. If not, you probably do not, no matter how much the change hurt.
Before you can know whether a change clears that ten percent threshold, you have to understand how Colorado child support is calculated in the first place. We walk through the full calculation in our article on how child support is calculated in Colorado. And because the formula changed in 2026, parents with newer or modified orders should also understand what the new law changed, since the number your order is measured against may not be the number it was built on.
The Order Stands Until a Court Changes It
This is the part that costs people real money.
Your income dropping does not lower your order. Your ex’s raise does not raise it. A new parenting schedule does not rewrite it. Until a court enters a new order, the existing order is what is owed. Every dollar of it. The number does not adjust itself to match your life, and neither parent gets to decide on their own that it should be different now.
Two consequences follow. First, if you stop paying or start paying less because you believe the number should be lower, you are not modifying your order. You are falling behind on it. Those missed dollars become arrears, and arrears do not disappear because your reason was good. Second, when a court does modify child support, the change generally reaches back only to the date you filed the motion, not to the date your life actually changed. If your income dropped in January and you do not file until October, those months in between are gone. You cannot get them back.
That is why waiting works against you. The parent who acts when the change happens protects himself. The parent who waits, hopes, and assumes everyone understands the number should be different is the parent who pays for months he did not have to.
Life Events That Can Lower Child Support
You lost your job or your income dropped
Losing income is a frequent reason to seek a reduction, but how you lost it matters. If the loss was involuntary, the layoff, the closure, the health crisis, that is the kind of change the court is built to address. If you chose it, by quitting, by walking away from a good job for a lower-paying one, by deciding to take time off, the court can treat you as if you were still earning what you could earn, and set support on that number instead of your smaller paycheck. So the question is never just whether your income dropped. It is whether it dropped for a reason the court will respect, and whether the drop will last.
Your parenting time genuinely increased
If the children are now spending materially more overnights with you than the order assumes, that can change the calculation, especially under Colorado’s 2026 child support formula, which credits overnights differently than the old rules did. There are two limits. The schedule has to have actually changed in how the family lives, not just on paper, and the recalculated number still has to clear that ten percent bar before it counts.
One child aged out, but you still have younger children
This one surprises almost everyone. In Colorado, child support ends automatically only when the last or only child turns nineteen. When you have several children and one of them turns nineteen, your support does not automatically drop for the others. The order stays exactly where it is until someone files to recalculate it for the remaining children. Parents assume the number self-adjusts the day a child ages out. It does not. If you want it to reflect the children who are still minors, that takes a motion.
A child no longer needs daycare
Work-related childcare is built into the support calculation. When a child ages out of daycare or after-school care, that cost comes out of the math, and the number can change. As with everything here, the change runs through the court, and it has to be substantial and continuing to count.
Life Events That Can Raise Child Support
The other parent got a big raise, bonus, or new contract
This is the one receiving parents ask about. A real, lasting jump in the other parent’s income can support an increase. Colorado looks at income broadly: salary, yes, but also bonuses, commissions, and the variable or contract income that does not show up on a simple pay stub. A one-time bonus may not be continuing. A new salary that becomes the baseline is. And a publicly visible jump in income, the new contract, the promotion announced online, is often what prompts a parent to ask for a review.
A child developed medical or special needs
New, ongoing medical or therapeutic costs can change the support picture, but only if they continue. A single emergency-room bill is not the same as a diagnosis that brings recurring care, equipment, or treatment for years. The second kind is what the court takes seriously.
Childcare started, or its cost rose sharply
If a parent goes back to work and now pays for care, or the cost of care rises sharply, that can move the number, through a modification, when it is substantial and continuing.
A parent’s income rose through a business or career change
When income comes from a business, self-employment, or a major career move, the analysis gets more involved, because business income is rarely as simple as a paycheck. The court can look past the surface at what the business actually produces. If you believe the other parent’s real income has grown well beyond what they report, that is a records question, not a guessing question.
Events People Think Change Support, but May Not
Some common assumptions are wrong, and acting on them creates problems.
A child turning eighteen does not end support in Colorado. Our age is nineteen, not eighteen, and even then only for the last or only child.
A child going to college does not create a support obligation for tuition. Colorado courts generally cannot order a parent to pay for college. Support ends at nineteen regardless of whether the child enrolls, unless the parents agreed in writing to share those costs, in which case the agreement controls.
A teenager getting a part-time job rarely changes anything. The after-school shifts that go straight into a teenager’s pocket for gas and food rarely move a support calculation, and fighting over them often costs more than it could recover.
A rough month is not a substantial and continuing change. A single slow season does not meet the standard.
And an informal deal between parents does not replace the order. “We agreed I would pay less for a while” is not a modification. If it was never entered by the court, the original order still controls, and the shortfall still becomes arrears.
What Actually Changing the Order Looks Like
Every real change, up or down, runs through the court, and the existing order stands until that happens. The law gives you a path when life genuinely changes. It does not let you decide on your own that the number is different now.
The practical move, when a real change happens, is to find out quickly whether your situation clears the bar, and if it does, to act instead of wait. Have that conversation early, while the facts are fresh and before the unrecoverable months add up.
Frequently Asked Questions
Can child support go down if I lose my job in Colorado?
It can, if the loss is the kind the court will respect and the change is substantial and continuing. An involuntary loss is treated very differently from quitting or choosing lower-paying work, where the court may base support on what you could earn. The reduction generally reaches back only to the date you file, so filing promptly matters.
Can child support go up if my ex makes more money?
A real, lasting increase in the other parent’s income can support a higher order, especially if recalculating moves the number by at least ten percent. A one-time bonus may not qualify, but a new, ongoing salary usually does.
Does child support change automatically when my income changes?
No. The existing order stays in force until a court enters a new one. Income going up or down does not adjust the order on its own, and falling behind in the meantime creates arrears.
Does child support stop when my child turns eighteen in Colorado?
No. In Colorado, support generally continues until the last or only child turns nineteen, with limited exceptions, such as a child still in high school or a child with a qualifying disability.
Do I still pay child support if my child goes to college?
Generally, support ends at nineteen regardless of college enrollment, and Colorado courts usually cannot order a parent to pay college costs. Parents can agree in writing to share those costs, and that agreement is enforceable.
What if my co-parent and I agreed on a different amount ourselves?
Unless the court entered that agreement as a new order, the original order still controls. An informal deal does not stop arrears from adding up.
How far back can a child support change go in Colorado?
As a general rule, a modification reaches back only to the date the motion was filed. There is a specific exception tied to an actual change in physical care, but for an ordinary income or expense change, the filing date is the line.
Talk to Someone Before the Months Add Up
If your life has changed in one of these ways, the worst thing you can do is wait and hope the number changes on its own. It will not. The order stands until a court changes it, and every month you wait is a month you cannot recover.
We help Denver and Colorado parents figure out whether a real change qualifies and, when it does, move quickly to protect what waiting would cost them. If you are weighing any of this, schedule a free consultation and let us look at your actual numbers under current law.
We choose sides. Yours.
This article is general legal information, not legal advice. Every family law matter is different, and the application of Colorado law depends on the specific facts of each case.
Sources reviewed (June 2026)
- C.R.S. § 14-10-122, modification of child support
- C.R.S. § 14-10-115, child support guidelines, as amended by HB25-1159
- House Bill 25-1159 (2025), effective March 1, 2026