Understanding Child Support Calculations: What Every Dad Needs to Know
Last updated: January 2026 • 8 min read
You just got the paperwork. Somewhere in that stack of legal documents is a number—your monthly child support. And you have no idea if it's right.
Most dads feel this way. The formula seems like a black box. But here's the truth: once you understand how it works, you can prepare. And preparation is power.
How Child Support Is Actually Calculated
The Basic Formula
- 1.Both parents' incomes are combined
- 2.A percentage is assigned based on number of children
- 3.That percentage is divided based on custody time
- 4.Adjustments are made for healthcare, childcare, special needs
The 5 Factors That Affect Your Amount
1Your gross income (before taxes)
2Other parent's income
3Number of children
4Custody time (overnights)
5Healthcare & childcare costs
State-by-State Differences
| State | Model | Example (2 kids, $5k/mo) |
|---|---|---|
| California | Income Shares | $1,063/mo |
| Texas | % of Income | $1,250/mo |
| New York | Income Shares | $1,045/mo |
| Florida | Income Shares | $987/mo |
What the Calculator Won't Tell You
Judges have discretion in 67% of cases to deviate from guidelines. The formula is a starting point, not the final word.
What To Do Next
Legal Disclaimer: This article is for informational purposes only and does not constitute legal advice. Child support laws vary by state and individual circumstances. Consult a licensed attorney for advice specific to your situation.