Child Support Calculator
Every state calculates child support differently. Select your state below to get an estimate based on a simplified version of your state's actual guidelines.
Beta Estimate Only
This calculator provides rough estimates for informational purposes only. It is in beta and should not be relied upon as legal advice. Child support calculations involve many factors not captured here. Consult a licensed attorney or your state's child support agency for accurate calculations.
45
Income Shares
Both parents' incomes are combined to determine total child support needs, then divided proportionally based on each parent's share of the combined income.
3
Percentage of Income
A flat percentage of the non-custodial parent's income is applied based on the number of children. Simpler but considers only one parent's income.
3
Melson Formula
A three-step formula that first ensures each parent can meet their own basic needs, then calculates children's primary needs, then shares remaining income for the children's standard of living.
Select your state
51 jurisdictions available • Click any state to calculate
Alabama
AL
Alabama uses the Income Shares model. Both parents' gross incomes are combined, then a table determines what percentage …
Alaska
AK
Alaska uses the Income Shares model with Civil Rule 90.3. Both parents' adjusted incomes are combined. Alaska applies pe…
Arizona
AZ
Arizona uses the Income Shares model. Both parents' gross incomes are combined and run through a schedule to determine t…
Arkansas
AR
Arkansas uses the Income Shares model based on the Revised Family Support Chart. Both parents' net incomes are combined …
California
CA
California uses a complex algebraic Income Shares formula (CA Family Code §4055). It factors in both parents' net dispos…
Colorado
CO
Colorado uses the Income Shares model with an adjusted gross income approach. Combined adjusted gross income determines …
Connecticut
CT
Connecticut uses the Income Shares model with the Child Support and Arrearage Guidelines. Both parents' net weekly incom…
Delaware
DE
Delaware uses the Melson Formula — one of only three states using this model. It first ensures each parent retains a sel…
District of Columbia
DC
DC uses the Income Shares model. Both parents' gross incomes are combined to determine the basic support obligation from…
Florida
FL
Florida uses the Income Shares model under §61.30. Both parents' net incomes are combined to find the basic obligation. …
Georgia
GA
Georgia uses the Income Shares model with an extensive Basic Child Support Obligation table. Combined adjusted gross inc…
Hawaii
HI
Hawaii uses the Melson Formula. Like Delaware, it first ensures each parent has enough for their own basic needs (self-s…
Idaho
ID
Idaho uses the Income Shares model. Both parents' gross incomes are combined to determine the basic support obligation. …
Illinois
IL
Illinois switched to the Income Shares model in 2017. Both parents' net incomes are combined using standardized tax tabl…
Indiana
IN
Indiana uses the Income Shares model under Rule 31. Both parents' weekly gross incomes are combined. The Indiana Child S…
Iowa
IA
Iowa uses the Income Shares model. Both parents' net monthly incomes are combined and matched to the Iowa Schedule of Ba…
Kansas
KS
Kansas uses the Income Shares model under Kansas Supreme Court Administrative Order 128. Both parents' gross incomes (wi…
Kentucky
KY
Kentucky uses the Income Shares model. Both parents' combined adjusted gross monthly incomes determine the basic obligat…
Louisiana
LA
Louisiana uses the Income Shares model. Both parents' adjusted gross incomes are combined, and the schedule provides the…
Maine
ME
Maine uses the Income Shares model under 19-A M.R.S. §2006. Both parents' gross incomes minus certain deductions give ad…
Maryland
MD
Maryland uses the Income Shares model. Both parents' actual monthly incomes are combined to find the basic obligation fr…
Massachusetts
MA
Massachusetts uses the Income Shares model based on 2021 updated guidelines. Both parents' gross incomes minus certain d…
Michigan
MI
Michigan uses the Income Shares model with the Michigan Child Support Formula. Both parents' net incomes are used. The f…
Minnesota
MN
Minnesota uses the Income Shares model under Minn. Stat. §518A. Both parents' gross incomes minus certain deductions det…
Mississippi
MS
Mississippi uses the Percentage of Income model (recently adopted Income Shares effective 2024, but simplified percentag…
Missouri
MO
Missouri uses the Income Shares model under Supreme Court Rule 88.01. Both parents' gross monthly incomes are adjusted a…
Montana
MT
Montana uses a modified Melson Formula. First, each parent's income is reduced by a self-support allowance to ensure bas…
Nebraska
NE
Nebraska uses the Income Shares model. Both parents' monthly gross incomes are combined to find the total child support …
Nevada
NV
Nevada uses a hybrid approach often classified as Percentage of Income but with Income Shares characteristics. The non-c…
New Hampshire
NH
New Hampshire uses the Income Shares model under RSA 458-C. Both parents' adjusted gross incomes are combined to determi…
New Jersey
NJ
New Jersey uses the Income Shares model with detailed Appendix IX guidelines. Both parents' net incomes (after taxes and…
New Mexico
NM
New Mexico uses the Income Shares model. Both parents' gross monthly incomes are combined to determine the basic obligat…
New York
NY
New York uses the Income Shares model under the Child Support Standards Act (CSSA). Both parents' combined income up to …
North Carolina
NC
North Carolina uses the Income Shares model. Both parents' adjusted gross monthly incomes are combined and matched to a …
North Dakota
ND
North Dakota uses the Income Shares model under NDCC §14-09-09.7. Both parents' net incomes are combined. The child supp…
Ohio
OH
Ohio uses the Income Shares model under ORC §3119. Both parents' gross annual incomes are combined and matched to a Basi…
Oklahoma
OK
Oklahoma uses the Income Shares model under 43 O.S. §119. Both parents' gross monthly incomes are combined to determine …
Oregon
OR
Oregon uses the Income Shares model with OAR 137-050 guidelines. Both parents' gross cash incomes are combined. The basi…
Pennsylvania
PA
Pennsylvania uses the Income Shares model under Pa.R.C.P. 1910. Both parents' monthly net incomes are combined. The basi…
Rhode Island
RI
Rhode Island uses the Income Shares model under the Family Court Administrative Order. Both parents' gross incomes are c…
South Carolina
SC
South Carolina uses the Income Shares model under the SC Child Support Guidelines. Both parents' monthly gross incomes a…
South Dakota
SD
South Dakota uses the Income Shares model. Both parents' net monthly incomes are combined. The obligation is determined …
Tennessee
TN
Tennessee uses the Income Shares model under the Tennessee Child Support Guidelines. Both parents' adjusted gross income…
Texas
TX
Texas uses the Percentage of Income model — one of the simplest in the nation. Support is calculated as a flat percentag…
Utah
UT
Utah uses the Income Shares model under UCA §78B-12. Both parents' adjusted gross monthly incomes are combined. Utah's g…
Vermont
VT
Vermont uses the Income Shares model under 15 V.S.A. §656. Both parents' available incomes (gross minus taxes and certai…
Virginia
VA
Virginia uses the Income Shares model under VA Code §20-108.2. Both parents' gross monthly incomes are combined. The gui…
Washington
WA
Washington uses the Income Shares model under RCW 26.19. Both parents' combined net monthly incomes determine the basic …
West Virginia
WV
West Virginia uses the Income Shares model under W. Va. Code §48-13. Both parents' adjusted gross incomes are combined. …
Wisconsin
WI
Wisconsin uses the Percentage of Income model. Support is calculated as a flat percentage of the non-custodial parent's …
Wyoming
WY
Wyoming uses the Income Shares model. Both parents' net monthly incomes are combined. The presumptive child support obli…
Beta Estimate Only
This calculator provides rough estimates for informational purposes only. It is in beta and should not be relied upon as legal advice. Child support calculations involve many factors not captured here. Consult a licensed attorney or your state's child support agency for accurate calculations.