Child support & your paycheck
How child support affects your take-home pay in 2026
Child support is a post-tax obligation — it is not deductible from your federal income tax, and it is not included in the recipient's taxable income. This means every dollar of child support comes out of your already-taxed paycheck. Understanding the full picture of taxes plus child support is critical for accurate budgeting.
For a single filer earning $75,000 with $1,200 per month in child support and no state income tax: federal tax is about $8,960, FICA is $5,738, leaving $60,302 in annual take-home. Subtracting $14,400 annual child support leaves $45,902 per year or $3,825 per month in disposable income.
How child support is ordered: two models
| Model | Used by | How it works |
|---|---|---|
| Income Shares | ~40 states | Combines both parents' income, calculates the total child-rearing cost, and splits it proportionally based on each parent's share of combined income |
| Percentage of Income | ~9 states (e.g., WI, TX, MS) | Applies a percentage of the noncustodial parent's income: typically 17% for one child, 25% for two, 29% for three, 31% for four, 34% for five+ |
Percentages are examples from common state guidelines. Your state court sets the actual amount. Enter your ordered monthly amount in the calculator above.
Federal garnishment limits (CCPA)
The federal Consumer Credit Protection Act (15 U.S.C. 1673) limits how much of your disposable earnings can be garnished for child support:
| Situation | Max garnishment |
|---|---|
| Supporting a current spouse or other children | 50% of disposable earnings |
| Not supporting a current spouse/children | 60% of disposable earnings |
| 12+ weeks in arrears (add 5%) | 55% or 65% of disposable earnings |
"Disposable earnings" means gross pay minus mandatory deductions (federal/state taxes, FICA, mandatory pension contributions). The calculator above checks your child support against the 50-60% CCPA threshold and warns if you are approaching the limit.
Impact of a raise or job change
A child support order specifies a fixed dollar amount. Getting a raise does not automatically increase your child support — but the other parent can petition for a modification if there has been a material change in circumstances. Some states have automatic review provisions (e.g., every three years). If your employer withholds child support as a percentage rather than a fixed amount (less common), your payments will increase automatically with a raise.
If you lose your job or your income drops significantly, you can petition the court for a downward modification. However, support continues to accrue at the original amount until the court issues a new order — you cannot unilaterally reduce payments.
Budgeting with child support: worked example
| Line item | $60K salary | $90K salary | $120K salary |
|---|---|---|---|
| Gross monthly | $5,000 | $7,500 | $10,000 |
| Fed tax + FICA | ~$800 | ~$1,488 | ~$2,229 |
| Net before CS | ~$4,200 | ~$6,012 | ~$7,771 |
| Child support ($1,200) | -$1,200 | -$1,200 | -$1,200 |
| Monthly take-home | ~$3,000 | ~$4,812 | ~$6,571 |
| CS as % of gross | 24% | 16% | 12% |
At $60K, the $1,200 monthly child support consumes 24% of gross income and 29% of net income. At $120K, the same $1,200 is only 12% of gross and 15% of net. This illustrates why child support feels much heavier at lower income levels.
Common questions
Child support paycheck FAQ
How is child support calculated from my salary?
Child support is calculated from your net disposable income — your gross pay minus taxes, mandatory deductions and sometimes health insurance premiums. Most states use one of two models: the Income Shares model (used by ~40 states), which considers both parents' income and allocates support proportionally, or the Percentage of Income model (used by ~9 states), which applies a flat percentage of the noncustodial parent's income based on the number of children.
Is child support tax deductible?
No. Child support payments are not tax-deductible for the payer and are not taxable income for the recipient. This has been the rule since 1984. This means the full child support amount comes out of your after-tax income — there is no tax relief on the payment itself, unlike pre-2019 alimony.
What is the maximum child support garnishment?
Under the federal Consumer Credit Protection Act (CCPA), child support garnishment is limited to 50% of disposable earnings if you are supporting a current spouse or other children, or 60% if you are not. An additional 5% is allowed if you are more than 12 weeks behind, bringing the maximum to 55% or 65% of disposable earnings.
What income is used for child support?
Most states use gross income from all sources: W-2 wages, self-employment income, bonuses, commissions, overtime, rental income, investment income, retirement distributions and even imputed income if you are voluntarily underemployed. Mandatory deductions (taxes, FICA, union dues, mandatory retirement) are then subtracted to arrive at net disposable income.
Does overtime count toward child support?
In most states, regular and consistent overtime is included in gross income for child support calculations. Truly occasional or voluntary overtime may be excluded in some jurisdictions, but if you routinely work overtime, courts generally include it. Mandatory overtime is almost always included.
How does a raise affect child support?
A raise does not automatically change your child support order. Either parent must petition the court for a modification, typically showing a material change in circumstances. However, if your employer withholds a percentage of income for child support (as opposed to a fixed dollar amount), your payments may increase automatically with a raise.
Can child support be taken from my paycheck?
Yes. Most child support orders include an Income Withholding Order (IWO) that requires your employer to deduct child support directly from your paycheck before you receive it. This is similar to tax withholding and is the primary enforcement mechanism. The employer sends the deducted amount to the state disbursement unit, which forwards it to the custodial parent.
- Sources: Consumer Credit Protection Act 15 U.S.C. 1673 (garnishment limits 50-65%) · IRS (child support not deductible/taxable) · IRS Rev. Proc. 2025-32 (2026 brackets).
- 🔄 Last updated July 2026 · Tax year 2026
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