Calculating child support in Texas can feel overwhelming—especially when dealing with different incomes, medical expenses, custody arrangements, and multiple households. The Texas OAG (Office of the Attorney General) Child Support Calculator simplifies this entire process by giving parents a quick, guideline-based estimate of monthly child support.
The calculator follows the Texas Family Code and applies official percentages, income rules, and deductions to help parents understand what support amount they can expect before going to court, negotiating, or planning financially.
Whether you’re a parent preparing for a case, working on a support agreement, or simply trying to understand your responsibilities, this calculator offers clarity and confidence.
What Is the Texas OAG Calculator?
The Texas OAG Child Support Calculator is a digital tool that uses Texas Child Support Guidelines to estimate the monthly support payment. It calculates:
- Net monthly income
- Required percentage based on number of children
- Medical and dental support
- Adjustments (if multiple households exist)
While it does not replace a formal court order, it provides highly accurate estimates that align closely with what judges typically determine.
How the Texas OAG Calculator Works
Texas child support is based on a fixed percentage system. Once the parent’s net monthly resources are calculated, a guideline percentage is applied.
Texas Child Support Percentages
| Number of Children | Percentage of Net Income |
|---|---|
| 1 Child | 20% |
| 2 Children | 25% |
| 3 Children | 30% |
| 4 Children | 35% |
| 5 Children | 40% |
| 6+ Children | Not less than 40% |
Net Resources Include:
- Salary and wages
- Bonuses and commissions
- Self-employment income
- Overtime
- Rental income
- Retirement income
- Unemployment benefits
Allowable Deductions:
- Social Security taxes
- Federal income tax
- Health insurance for the child
- Dental coverage
- Union dues
After calculating net resources, the appropriate percentage is applied to determine the monthly child support obligation.
Inputs Required by the Calculator
Most Texas OAG child support calculators ask for:
- Monthly gross income
- Monthly tax deductions
- Number of children before and after the court order
- Health insurance cost for the child
- Dental coverage cost
- Child custody situation
- Multiple household adjustments (if applicable)
Advanced tools may include:
- Average income over several months
- Business income (for self-employed parents)
- Bonuses and overtime annual averages
Outputs Provided by the Calculator
You’ll typically receive:
- Net monthly resources
- Base child support amount
- Medical support amount
- Dental support amount
- Total monthly payment
- Adjustments for other dependents
How To Use the Texas OAG Calculator (Step-by-Step)
- Enter Monthly Income
Include salary, business income, bonuses, and commissions. - Add Deductions
Taxes, health insurance, retirement contributions, etc. - Select the Number of Children
Choose the number of children covered by the support order. - Add Information About Other Households
This helps apply the correct adjustment. - Enter Medical and Dental Costs
Courts require these by Texas law. - Click “Calculate”
The tool applies Texas child support guidelines automatically. - Review the Results
You’ll see the monthly child support and medical support totals.
Example Calculation
Scenario:
- Monthly gross income: $4,000
- Net monthly resources: $3,200
- Number of children: 2
- Medical insurance for children: $150/month
Texas percentage for 2 children = 25%
Calculation
- Child support: 25% of $3,200 = $800/month
- Medical support: $150/month
- Total monthly obligation = $950
This is a simplified example; actual figures depend on income documentation and deductions.
Benefits of Using the Texas OAG Calculator
1. Accurate Guideline-Based Estimates
The calculator follows Texas Family Code formulas and gives very close real-world results.
2. Helps with Legal Preparation
Parents can enter court or mediation with a clear expectation.
3. Reduces Confusion
The tool handles complex calculations—no need to compute percentages manually.
4. Great for Negotiation and Planning
Both parents understand their responsibilities ahead of time.
5. Works for Many Situations
Multiple households, self-employment, insurance costs—all can be factored in.
Best Use Cases
- Preparing for a child support hearing
- Calculating estimates before filing
- Drafting a co-parenting agreement
- Financial planning after divorce
- Understanding modification eligibility
- Helping attorneys or clients with quick estimates
- Supporting mediation or settlement discussions
Pro Tips for Accurate Results
- Use income averages from the last 3–6 months
- Include bonuses, commissions, and overtime
- Enter insurance costs with exact monthly values
- Only include deductions allowed by Texas law
- Double-check for multiple household dependents
20 Frequently Asked Questions (FAQs)
1. Is the Texas OAG Calculator an official court tool?
It provides guideline-based estimates but is not a substitute for a court order.
2. Will the calculator give the exact amount a judge will order?
It gives a close estimate, but final decisions vary by case.
3. Are medical and dental support required in Texas?
Yes. Parents must provide medical and dental coverage.
4. How long does child support last in Texas?
Until age 18 or high school graduation—whichever is later.
5. Can child support be modified?
Yes, after a significant change in income or circumstances.
6. How does Texas calculate self-employed income?
Using net business income after expenses.
7. Does overtime count toward child support?
Yes, if it is regular or ongoing.
8. Does support change if I have children in another home?
Yes, adjustments apply for multiple households.
9. Can child support ever be $0?
Rarely—Texas often uses minimum wage equivalents.
10. Are unemployment benefits counted?
Yes, they are included as income.
11. Does remarriage affect child support?
The new spouse’s income is not considered.
12. Are college expenses included in support?
No—unless both parents agree separately.
13. Can arrears be estimated?
Yes, if the calculator has an arrears feature.
14. Are child support payments tax deductible?
No.
15. Can the receiving parent ask for proof of income?
Yes, during legal proceedings or modification requests.
16. Does joint custody eliminate child support?
Not always—depends on income differences.
17. Can seasonal income affect calculations?
Yes, annual averages are used.
18. Does the calculator determine net income automatically?
If built into the tool—yes.
19. Are Texas child support guidelines updated annually?
Percentages rarely change, but income caps may update.
20. Does medical support count toward the main child support amount?
It is added in addition to guideline support.
Conclusion
The Texas OAG Calculator is one of the most reliable tools for estimating child support in Texas. It uses official guidelines, calculates net resources automatically, and gives parents a clear understanding of their responsibilities before going to court or negotiating agreements.