How much does a parent have to pay in child support? What is the legally set amount?

Some people believe that child support is the same for all parents. They believe that every parent who is ordered to pay child support pays the same amount of money per child. This is not how child support is calculated in most jurisdictions, and Utah is no exception.

Child support is based upon several factors before it is calculated and ordered:

  • the incomes of both parents;
  • the number of children there are; and
  • the number of overnights that each parent spends with the child or children on an annual basis

Some other factors can affect child support calculations, such as whether a child has special needs, but generally, child support is a factor of parent income and the number of overnights the children spend with each parent. Allow me to explain with this hypothetical example:

John and Jane are the parents of three minor children.

John’s gross monthly income (we use gross monthly income as the income figures for calculating the monthly base child support obligation) is $5,400 per month, and Jane’s monthly gross income is $2,600 per month.

To calculate child support in various custody situations, we are going to utilize the Utah State Office of Recovery Services Child Support Calculator.

If the children spend an equal number of overnights with both parents on an annual basis, then child support looks like this because it is calculated this way under Utah Code § 30-3-35.2[1]:


(d) Child support for the equal parent-time schedule shall be consistent with Section 78B-12-208.


(i) A court shall determine which parent receives 182 overnights and which parent receives 183 overnights for parent-time.

(ii) For the purpose of calculating child support under Section 78B-12-208, the amount of time to be spent with the parent who has the lower gross monthly income is considered 183 overnights, regardless of whether the parent receives 182 overnights or 183 overnights under Subsection (2)(e)(i).

Joint Custody P1 – 183 P2 – 182
Joint Custody P1 – 182 P2 – 183

If one parent has the children in his or her custody more or less than on an equal time basis, the calculation looks something like this:

  • I will show what a calculation based upon an unequal physical custody award looks like by calculating child support based upon John spending less than 111 overnights with his children annually)
  • In such a situation, we will treat John as the “noncustodial” parent. “Noncustodial parent” does not mean that John has lost all of his parental rights, but just that he does not have primary physical custody of the children (i.e., that the children are in his care and custody less than 111 overnights annually). Based upon John’s spending less than 111 overnights with the children, the Child Support worksheet would look like this, and would result in John’s child support obligation being as follows:
Sole Custody

And there is yet another way to calculate child support in a “split custody” situation. That’s a situation where, when there are multiple children, some live primarily with one parent and some live primarily with the other (in other words, they don’t spend time all together with one parent at a time).

So, let’s assume in this scenario that two of the children live with John as the custodial parent, and one of the children lives with Jane has the custodial parent of that one child. This is how the child support calculation worksheet would look and what the resulting child support obligations from each parent to the other would be:

Split Custody

As you can see, on a split custody basis, even though each parent has custody of one or more children, it ultimately comes down to one parent’s obligation being offset by what the other parent’s obligation is. This is why John pays $13 to Jane each month, even though Jane’s obligation to John is $355.94 per month because his obligation to Jane is $369.08 per month.

So John’s obligation to Jane of $369.08 per month is reduced by Jane’s $355.94 monthly obligation to John, resulting in a difference of $13.


Now, the examples I provided above are not the only ways child custody can be awarded and thus not the only ways that child support can be calculated and awarded, but these examples are the most common that you’ll see. So, now you get an idea of what happens and what the child support calculations and obligations are in these situations.

Utah Family Law, LC | | 801-466-9277

[1] This is not truly an equal custody award because one parent is awarded 183 overnights with the children annually. It does not have to be this way, and indeed, I submit it should not be this way. If you are a parent who wants a true equal custody award made, then calculate custody and child support this way:

  • Agree that each parent is awarded 182.5 overnights with the children annually and note that this will result in one parent naturally having the children in his/her care and custody 183 overnights in one year, then 182 overnights in the next year due to the fact that a year consists of (with the exception of leap years, which occur so rarely as to be statistically insignificant) an odd number of days, i.e., 365.
  • Calculate what child support would be for the obligor parent (“obligor” means the one who pays) if a parent had the children in his/her care and custody 183 overnights annually and 182 overnights annually, and then average those two child support obligations to get what the child support obligation is on a 182.5 overnights annually basis.
  • So, in John and Jane Doe’s hypothetical case, that would mean that John’s monthly base child support payment obligation on a 182.5 perfectly equal custody basis would be $287 per month ($272 + #302 = $574. $574 ÷ 2 = $287).
Tags: , , , , ,
Click to listen highlighted text!