Table of Contents
How Income Is Used in Child Support Calculations
Income is the primary factor in calculating child support in every state. Whether your state uses the Income Shares model, Percentage of Income model, or Melson Formula, the calculation starts with determining each parent's income. Getting the income figure right is critical because even small differences can significantly affect the support amount.
States differ on whether they use gross income (before taxes) or net income (after taxes and certain deductions). Most states using the Income Shares model start with gross income and allow specific deductions. States using the Percentage model typically use net income.
What Income Is Included
Most states cast a wide net when defining income for child support purposes. The following sources are typically included:
- Wages and salary — Regular employment income from all jobs
- Tips and gratuities — Both reported and unreported (courts may estimate)
- Overtime pay — Especially if regular or mandatory
- Bonuses and commissions — Averaged over a reasonable period (1-3 years)
- Self-employment income — Net business income after legitimate expenses
- Rental and royalty income — Net income from properties and intellectual property
- Interest and dividends — From savings, stocks, bonds, and mutual funds
- Capital gains — Profits from sale of investments or assets
- Trust distributions — Regular or reasonably expected distributions
- Pension and retirement payments — All retirement income sources
- Social Security benefits — Retirement, disability, and survivor benefits
- Workers' compensation — Ongoing disability payments
- Unemployment benefits — State and federal unemployment compensation
- Disability benefits — Both private and public disability insurance
- Alimony received — Spousal support from previous relationships
- Military pay and allowances — Including BAH and BAS
- Severance pay — Lump sum or periodic severance
- Prizes, awards, and gambling winnings — Significant or regular amounts
- Fringe benefits — Company car, housing allowance, stock options (in some states)
What Income Is Typically Excluded
- Public assistance benefits — TANF, SNAP (food stamps), SSI (in most states)
- Child support received for other children — Generally not counted as income
- Foster care payments — Not considered income
- Adoption assistance — Not included in most states
- New spouse's income — Not directly included (but may have indirect effects)
- Gifts and inheritances — One-time gifts generally excluded; regular gifts may be included
Common Deductions from Gross Income
- Federal, state, and local income taxes (actual or estimated)
- FICA taxes (Social Security and Medicare)
- Mandatory retirement contributions
- Health insurance premiums (for the parent only)
- Pre-existing child support orders being paid
- Alimony paid under existing orders
- Union dues (where mandatory)
Imputed Income: Voluntary Unemployment & Underemployment
One of the most contested issues in child support is imputed income. When a court determines that a parent is voluntarily unemployed or voluntarily underemployed, it may calculate support based on what the parent could earn rather than what they actually earn.
Courts consider the following factors when imputing income:
- Education and qualifications — Degrees, certifications, and training
- Work history — Previous employment and earnings
- Job market conditions — Available jobs in the parent's area and field
- Age and health — Physical and mental ability to work
- Prior earnings — Historical income as an indicator of earning capacity
- Reason for unemployment — Layoff vs. quitting vs. choosing not to work
- Good faith job search efforts — Documentation of job applications and interviews
Courts generally will not impute income to parents who are genuinely disabled, incarcerated, caring for a very young child (typically under 2-3 years), enrolled in an education program that will increase earning capacity, or laid off and actively seeking employment.
Income Caps by State
Some states cap the income used in child support calculations. Above the cap, the standard formula does not apply and courts use discretion:
| State | Income Cap | Notes |
|---|---|---|
| Texas | $9,200/month net | 20% of net for 1 child up to cap; court discretion above |
| Colorado | $30,000/month combined | Guidelines apply to first $30,000; court discretion above |
| Virginia | $35,000/month combined | Schedule goes to $35,000; extrapolation above |
| New York | $163,000/year combined | Formula applies to first $163K; court discretion above (updated 2026) |
| Florida | $10,000/month combined | Guidelines schedule limit; court discretion above |
| Georgia | $30,000/month combined | Schedule goes to $30,000; discretion above |
| California | No statutory cap | Formula applies to all income levels |
| New Jersey | No statutory cap | Appendix IX schedule; extrapolation above max |
| Illinois | $30,000/month combined | Schedule limit; discretion above |
| Ohio | $30,000/month combined | Schedule goes to $30,000; court discretion above |
Self-Employment Income for Child Support
Calculating child support for self-employed parents is one of the most complex areas of family law. Key considerations:
- Tax returns as starting point — Schedule C (sole proprietor), K-1 (partnerships/S-corps), or corporate returns
- Add-backs — Courts add back personal expenses claimed as business expenses, excessive depreciation, one-time write-offs, and non-cash deductions
- Multiple years averaged — Courts typically look at 2-3 years of returns to account for income fluctuations
- Lifestyle analysis — If reported income does not match lifestyle (expensive home, cars, vacations), courts may impute higher income
- Forensic accounting — In contested cases, a forensic accountant may be hired to determine true income
- Cash businesses — Courts are particularly skeptical of cash-heavy businesses and may use indirect methods to estimate income
How Income Is Verified
Courts and enforcement agencies use multiple methods to verify income:
- Pay stubs — Recent pay stubs (typically 3-6 months) from all employers
- Tax returns — Federal and state returns with all schedules (1-3 years)
- W-2s and 1099s — Year-end income statements
- Employer verification — Direct confirmation from employers
- Bank statements — Deposits may reveal unreported income
- State wage databases — Quarterly wage reports filed by employers
- Social Security records — Earnings history from SSA
- Financial affidavit — Sworn statement under penalty of perjury
Frequently Asked Questions
Most states include all income sources: wages, salary, tips, bonuses, commissions, self-employment income, rental income, investment income, pension/retirement, Social Security, disability, unemployment, alimony received, and trust distributions. Some states also consider fringe benefits like company cars, housing allowances, and stock options.
Imputed income is income attributed to a parent who is voluntarily unemployed or underemployed. If a parent could be earning more based on their education, skills, work history, and local job market, the court may calculate support based on their earning capacity rather than actual income. This prevents parents from artificially reducing support by choosing not to work.
Some states cap the income considered for child support calculations. For example, Texas caps at $9,200/month net income, and Colorado caps at $30,000/month combined. Other states like California, New York, and New Jersey have no statutory cap. When income exceeds the guidelines schedule, courts typically use discretion or extrapolate.
Generally yes. Most states include overtime in gross income for child support purposes. However, if overtime is truly voluntary and not guaranteed, some courts will average it over a longer period or exclude it if it is sporadic. Mandatory overtime is almost always included. Courts look at the pattern over 1-3 years.
In most states, a new spouse's income does not directly factor into child support calculations. However, it may indirectly affect support because the new spouse's contribution to household expenses frees up more of the parent's own income for child support. A few states consider new household income in limited circumstances.
Self-employment income is typically calculated as gross receipts minus ordinary and necessary business expenses. Courts scrutinize claimed deductions and may add back excessive depreciation, personal expenses claimed as business expenses, and non-cash benefits. Tax returns, profit-and-loss statements, and bank records are all examined.