Calculating Texas Child Support


1 child 20% of Obligor’s Net Resources

2 children 25% of Obligor’s Net Resources

3 children 30% of Obligor’s Net Resources

4 children 35% of Obligor’s Net Resources

5 children 40% of Obligor’s Net Resources

6+ children Not less than the amount for 5 children


When the obligor has other children to care for, calculate Texas child support based on the percentages below.

Chart based on Texas Family Code 154.129.

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Brief Explanation of Entry Windows  (App versions  3.0)

1. Employed Gross– Enter the obligor’s monthly gross earnings from work income. Such as income from W-2 employers who withhold taxes for the obligor. This is the most common source of income for most people.

2. Self-Employed Gross– Enter the obligor’s monthly gross earnings from self-employed type work. This sort of income is less common and is usually subjected to higher tax rates.

3. Misc. Income– Enter miscellaneous nontaxed income that obligor receives, typically from non-work sources.

4. Employed Net Income– This is the resulting after-tax income from the amount in entry window #1.

5. Union Dues– Enter any monthly union dues the obligor pays. This window can also be used for other miscellaneous credits.

6. Medical Insurance Cost– Enter the out-of-pocket cost the obligor is paying toward the subject child(ren)’s health insurance.

7. Self Net Income– This is the resulting after-tax income from amount in entry window #2.

8. Adjusted Net Income– This is the resulting total from adding the amounts in windows 3,4,7 together. This is an after-tax amount to which child support percentages are applied.

9. Toggle off (max. $8550) on – Select whether to remove (turn off) the state monthly net income cap of $8550.00 from a calculation or to leave it on (most common).

10. Children before the court– Select the number of children for whom support is due who are involved in the case.

11. Others/duty of support– Select the number of non-involved children the obligor must support (by order or cohabitation) for which he deserves credit.

12. Calculate– Select to calculate the income value in windows 4,7,8.

13. Next page arrows >>– Select next page arrows to see the resulting child support answer amounts.

14. Guideline %– Resulting child support percentage based on number of children before the court (see #10) that is applied to the obligor’s adjusted net income.

15. Adjusted Net Income– Repeat of amount of obligor’s net income carried over from window #8.

16. Multi-Family %– Resulting lower child support percentage that accounts for the obligor’s duty of support for his other children (see #11).

17. Child Support Monthly– Resulting monthly child support amount to be paid by the obligor based on number of children before the court.

18. Child Support Multi-Family Credit– Additional resulting monthly child support amount to be paid by the obligor that accounts for his other children.

19.– Link to’s tutorials and help page (opens in new window).

20. Calculate Wage Withholding– Select to calculate withholding amounts.

21. Withholding Calculator Tip– Reminds the user to reset data they enter to ensure they get correct withholding amounts.




The Union Dues Window can be used for more than just inserting union dues amounts. See article here.