Missouri child support is based on a worksheet. Put in the same numbers the court uses and you get the same answer.
Below is Form Number 14, the Child Support Amount Calculation Worksheet, broken into the order you would actually fill it out. All twelve lines are here. White cards are yours to fill in. Gold cards calculate themselves as you type, including line 5, which comes straight off the schedule of basic child support obligations.
The schedule, the child care tax credit table and the overnight adjustment table are built in, so there is nothing to look up. If you want the official documents themselves, all three are linked below. Nothing you type leaves your browser.
This calculator is for informational and educational purposes only. The amount of child support a court will order in any particular case may be different from the amount estimated here.
The official documents
Download the current Missouri Form 14 and its schedule
These are the three documents this calculator is built on, all effective January 1, 2026. The worksheet is what gets filed. The directions explain every line. The schedule is the lookup table that produces line 5. Take them with you if you want to follow the math on paper.
PDF files published by the Supreme Court of Missouri. Form Number 14 as revised January 2026, SCR 88.01.
Missouri Form 14 child support calculator
Loading the live calculator. If this notice does not disappear within a second or two, JavaScript is being blocked on this page and the gold cards will not fill in.
Before you start
How many children are we calculating for?
Line 1 and line 1a
Monthly gross income
One twelfth of yearly gross income, before anything is taken out. Line 1a is court-ordered maintenance actually being received, which gets added on.
1a. Monthly court-ordered maintenance being received
Line 2
Adjustments that come off gross income
Other ordered child support being paid, maintenance being paid, and an allowance for a parent’s other children who primarily live with them.
2a. Other monthly child support paid under a court or administrative order
2b. Monthly court-ordered maintenance being paid
2c(1). Number of other children primarily residing in each parent’s custody
2c(3). Monthly child support received under an order for those other children
Calculated for you
Line 2c. Adjustment for other children
2c(2) is each parent’s obligation for those other children, looked up on the schedule using that parent’s line 1 income. The total is 2c(2) minus 2c(3).
2c(2) receiving
$0
2c(2) paying
$0
2c. Total adjustment
Receiving support
$0
Paying support
$0
Calculated for you
Line 3. Adjusted monthly gross income
Line 1 plus line 1a, minus lines 2a, 2b and 2c. A negative result is entered as zero.
Receiving support
$0
Paying support
$0
Combined
$0
Calculated for you
Line 4. Proportionate share of combined income
Each parent’s line 3 divided by the combined line 3, to the nearest tenth of one percent. This percentage splits everything that follows.
Receiving support
$0
Paying support
$0
Calculated for you
Line 5. Basic child support amount
Enter a monthly gross income above and this fills in from the schedule.
Combined obligation from the schedule
$0
Line 6a
Work-related child care paid by the person receiving support
Reasonable child care that lets that parent work or look for work. The tax credit below is applied automatically.
Calculated for you
Line 6a. Child care after the tax credit
Enter work-related child care above and the credit calculates itself.
6a(2) child care tax credit
$0
6a total adjusted child care
$0
Lines 6b through 6e
The rest of the additional child-rearing costs
Premiums are only the part attributable to the children who are the subject of this case, not the whole policy.
6b. Work-related child care costs of the parent paying support
6c. Health insurance costs for the children in this case
6d. Uninsured agreed-upon or court-ordered extraordinary medical costs
6e. Other agreed-upon or court-ordered extraordinary child-rearing costs
Calculated for you
Line 7. Total additional child-rearing costs
Lines 6a through 6e added up for each parent, then combined.
Receiving support
$0
Paying support
$0
Combined
$0
Calculated for you
Line 8. Total combined child support costs
Line 5 plus the combined line 7.
Combined
$0
Calculated for you
Line 9. Each parent’s support obligation
Line 8 multiplied by that parent’s line 4 percentage.
Receiving support
$0
Paying support
$0
Calculated for you
Line 10. Credit for additional child-rearing costs
The paying parent’s own line 7, credited back, because that parent already pays those costs directly.
Credit to the parent paying support
$0
Line 11
Overnight visitation or custody adjustment
How many overnights a year the children spend with the parent paying support. The adjustment is a percentage of line 5, and it is not allowed at all unless the receiving parent’s line 3 income clears a floor.
Calculated for you
Line 11. Overnight adjustment
Enter overnights above and this fills in.
Adjustment for the parent paying support
$0
Take it with you
Print this worksheet or save it as a PDF
You get a clean Form 14 summary with every line filled in, the schedule row that was used, and any notes that applied. In the print window choose Save as PDF if you want a file instead of paper. Nothing is uploaded and nothing is stored.
Start with line 1
Enter a monthly gross income for at least one parent. Every gold card fills itself in as you type.
Combined income is above the schedule
The schedule stops at $40,000 of combined adjusted monthly gross income, so line 5 uses the top row. Past that point the directions treat the figure as a reason a court may deviate, which makes it an argument rather than a lookup.
No line 11 overnight adjustment applies
The directions do not allow a line 11 adjustment unless the adjusted monthly gross income of the person receiving support clears the floor for this number of children.
The low income calculation applies
The paying parent’s line 3 income falls inside the shaded part of the schedule, so the directions require the worksheet to be run twice and the lower answer to control.
Line 12, presumed child support amount
The parent paying support would pay
$0
per month
Line 9 minus lines 10 and 11. Straight worksheet result before the low income comparison: $0
The low income second calculation
Run using the basic amount for the paying parent’s income alone, with that parent carrying all of it plus their share of line 7. Lines 4, 10 and 11 stay as they are on the worksheet.
Basic amount at the paying parent’s line 3:$0
Line 8, total combined child support costs:$0
Line 9, parent paying support:$0
Line 12 on this calculation:$0
Line 12 on the normal calculation:$0
The lower of the two controls:$0
An estimate produced from the figures you entered, using Form Number 14, its directions, and the schedule of basic child support obligations effective January 1, 2026. It is not a filing and it is not legal advice. Complete the official worksheet, and have an attorney review it, before you agree to anything.
Built on the current form
This follows Form Number 14 as revised January 2026, its directions, and the 2024 Child Support Guideline Review Updated Schedule that took effect on January 1, 2026. If you have seen a different figure from an older calculator, the schedule is usually the reason. All three documents are linked at the top of this page.
What goes in each line of Form 14
Line 1, monthly gross income
One twelfth of yearly gross income, before anything is taken out. It includes salaries, wages, commissions, dividends, severance pay, pensions, interest, trust income, annuities, partnership distributions, Social Security, retirement, workers’ compensation, unemployment, disability insurance, Social Security disability due to a parent’s own disability, veterans’ disability, and military allowances for subsistence and quarters. Overtime, bonuses, secondary employment, recurring capital gains, prizes and retained earnings may be included in appropriate circumstances. Excluded are TANF, Medicaid, SSI, Social Security disability received on behalf of a child, food stamps, general assistance, other income-based public assistance, and child support received for children who are not the subject of this proceeding. If a parent is unemployed or found to be underemployed, income may be imputed.
Line 1a, maintenance being received
Court-ordered maintenance actually being received, added to that parent’s gross income. Where the court is setting both maintenance and child support, it fixes maintenance first.
Line 2a, other ordered child support being paid
Child support paid under another court or administrative order for a child who is not part of this case. Voluntary payments do not count.
Line 2b, maintenance being paid
Court-ordered maintenance actually being paid, subtracted from that parent’s gross income.
Line 2c, other children living with a parent
For a parent’s other natural or adopted children who primarily reside with them and are not the subject of this proceeding. Stepchildren do not qualify. Enter the count in 2c(1) and the calculator looks up 2c(2) on the schedule using that parent’s line 1 income, then subtracts any support actually received for those children in 2c(3).
Line 3, adjusted monthly gross income
Line 1 plus line 1a, minus lines 2a, 2b and 2c. A negative result is entered as zero. Both parents added together give the combined income the schedule runs on.
Line 4, proportionate share
Each parent’s line 3 divided by the combined line 3, to the nearest tenth of one percent. This percentage splits everything that follows.
Line 5, basic child support amount
A lookup, not a calculation. The combined line 3 income is rounded to the nearest income step on the schedule, with 25 and 75 rounding upward, then read across to the number of children. The first row of the schedule covers everything at or below 1,300 dollars of combined monthly income, and the table runs up to 40,000 dollars. This is the largest number on the form and the one line 11 is calculated from.
Line 6a, child care costs of the person receiving support
Reasonable work-related child care, reduced by the child care tax credit. The credit is a percentage from a published table based on that parent’s line 1 income, applied to the first 250 dollars of costs for one eligible child or the first 500 dollars for two or more. A child is eligible if the care lets the parent work or look for work and the child is under thirteen, or is disabled and unable to care for himself or herself.
Line 6b, child care costs of the parent paying support
The same category of cost, incurred by the paying parent. No tax credit is applied here.
Line 6c, health insurance
The premium attributable to the children who are the subject of this proceeding, not the whole policy. If the actual figure is not available, divide the total monthly premium by the number of people covered, then multiply by the number of children who are the subject of this proceeding.
Line 6d, uninsured extraordinary medical
Agreed upon or court-ordered uninsured medical costs. Extraordinary means predictable and recurring, such as dental treatment, orthodontia, asthma treatment or physical therapy. Uninsured costs above 250 dollars per child per year are treated as extraordinary. One off illnesses and injuries are handled by a separate order.
Line 6e, other extraordinary child-rearing costs
Agreed upon or court-ordered costs such as tutoring, private or parochial schooling to meet a child’s particular educational needs, camps, lessons, travel, and other activities meant to develop a child athletically, socially or culturally. Post-secondary and private school expenses are not in the schedule, so they only belong here if the parents agree or the court orders it.
Line 7, total additional child-rearing costs
Each parent’s lines 6a through 6e added up, plus a combined total.
Line 8, total combined child support costs
Line 5 plus the combined line 7.
Line 9, each parent’s support obligation
Line 8 multiplied by that parent’s line 4 percentage.
Line 10, credit for additional child-rearing costs
The paying parent’s own line 7, credited back, because that parent is already paying those costs directly.
Line 11, the overnight adjustment
A percentage of line 5, based on how many overnights a year the children spend with the paying parent. Zero below 36 overnights, then 6 percent at 36 to 72, rising in bands to 34 percent at 181 to 183. A court can go above 34 percent up to 50 percent only on a finding that the presumed amount would be unjust. No adjustment at all is allowed unless the receiving parent’s line 3 exceeds 1,750 dollars for one child, 2,200 for two, 2,550 for three, 2,850 for four, 3,100 for five or 3,600 for six.
Line 12, presumed child support amount
Line 9 minus lines 10 and 11. If the credits equal or exceed line 9, line 12 is zero rather than a negative number.
Common questions about the Missouri child support calculator
Is this the same as the official Missouri child support calculator?
It is Form Number 14 itself, line for line, using the schedule of basic child support obligations, the child care tax credit table and the overnight adjustment table from the official directions. All three source documents are linked at the top of this page so you can check the math yourself. It is an estimate, not a filing. Have an attorney check it before you agree to anything.
Which version of Form 14 does this use?
Form Number 14 as revised in January 2026, together with the 2024 Child Support Guideline Review Updated Schedule, which took effect on January 1, 2026. The schedule changed with that revision, so a calculation run on an older calculator can come out meaningfully different for the same inputs.
Will the judge order exactly this number?
Usually close to it. The Form 14 result is called the presumed child support amount because Missouri presumes it is correct. A court can find the presumed amount unjust or inappropriate and order something different, but that requires a specific finding on the record addressing the statutory factors in section 452.340.1.
Does equal parenting time mean no child support?
Not automatically. The largest overnight adjustment on the table is 34 percent of line 5, which reflects the assumption that about 32 percent of the basic amount goes to costs that do not move with parenting time, such as clothing. If there is a meaningful income gap, the higher earner will usually still owe something. Time and income are two separate inputs.
What happens if the paying parent has a low income?
The schedule builds in a self-support reserve so that a low earning parent keeps enough to live on. When the paying parent’s line 3 income falls inside that part of the schedule, the directions require the worksheet to be run a second way and the lower of the two answers to control. The calculator runs both and shows you each one.
What if the other parent is hiding income?
The worksheet is only as good as the numbers in it, which is why discovery exists. If you believe income is being understated, or that a parent is voluntarily unemployed or underemployed, income can be imputed based on work history, qualifications, employment potential and available jobs. That is worth talking to an attorney about before you sign a Form 14.
Not sure your numbers are right?
Most Form 14 disputes are about what counts as income, not about the math. Bardol Law Firm handles family law and nothing else, in St. Louis County, St. Louis City, St. Charles County and Jefferson County. We generally return calls within one business day.
This Missouri child support calculator is for informational and educational purposes only and is not legal advice. Using it does not create an attorney client relationship. The choice of a lawyer is an important decision and should not be based solely upon advertisements.
Missouri Form 14 Child Support Estimate
Prepared with the Bardol Law Firm child support calculator at bardollaw.com. Built on Civil Procedure Form Number 14 as revised January 2026, its directions, and the 2024 Child Support Guideline Review Updated Schedule effective January 1, 2026. This is an estimate, not a filed worksheet.
Prepared for
Date prepared
Children who are the subject of this proceeding
Overnights per year with the parent paying support
Form 14 line
Receiving support
Paying support
Combined
1. Monthly gross income
$0
$0
1a. Monthly court-ordered maintenance being received
$0
$0
2a. Other monthly child support under a court or administrative order
$0
$0
2b. Monthly court-ordered maintenance being paid
$0
$0
2c(1). Number of other children primarily residing with each parent
0
0
2c(2). That parent’s obligation for those children, from the schedule
$0
$0
2c(3). Child support received under an order for those children
$0
$0
2c. Total adjustment for other children
$0
$0
3. Adjusted monthly gross income
$0
$0
$0
4. Proportionate share of combined adjusted monthly gross income
$0
$0
5. Basic child support amount, from the schedule
$0
6a(1). Work-related child care costs of the person receiving support
$0
6a(2). Child care tax credit
$0
6a. Total adjusted child care costs
$0
6b. Work-related child care costs of the parent paying support
$0
6c. Health insurance costs for the children in this case
$0
$0
6d. Uninsured extraordinary medical costs
$0
$0
6e. Other extraordinary child-rearing costs
$0
$0
7. Total additional child-rearing costs
$0
$0
$0
8. Total combined child support costs
$0
9. Each parent’s support obligation
$0
$0
10. Credit for additional child-rearing costs paid by the paying parent
$0
11. Adjustment for overnight visitation or custody
$0
12. Presumed child support amount
$0
Line 12, presumed child support amount
$0
per month
How line 5 was found
How line 11 was found
The low income second calculation
The paying parent line 3 income falls inside the shaded part of the schedule, so the directions require lines 8 through 12 to be run a second way and the lower answer to control.
Basic amount at the paying parent line 3
$0
Line 8, total combined child support costs
$0
Line 9, parent paying support
$0
Line 12 on this calculation
$0
Line 12 on the normal calculation
$0
The lower of the two controls
$0
Notes that applied
Combined adjusted monthly gross income is above the schedule. The schedule stops at $40,000, so line 5 uses the top row. Past that point the directions treat the figure as a reason a court may deviate.
The low income rule applied. Lines 8 through 12 were run twice and the lower result controls.
This estimate is for informational and educational purposes only and is not legal advice. Using this calculator does not create an attorney client relationship. The amount of child support a court orders in any particular case may be different. A Form 14 result is the presumed child support amount, which a court may find unjust or inappropriate after considering the factors in section 452.340.1, RSMo, and it is not a maximum. Complete the official worksheet and have an attorney review it before you agree to anything.
Bardol Law Firm LLC. Family law only. St. Louis County, St. Louis City, St. Charles County and Jefferson County. 314.918.0100. bardollaw.com
The choice of a lawyer is an important decision and should not be based solely upon advertisements.
