An income withholding order for child support is a document sent to your employer that requires them to deduct a set amount from each paycheck and forward it to the state disbursement unit, which then routes the money to the other parent. The order covers your current monthly obligation and, when applicable, an added amount applied to past-due support called arrears. Federal law caps the total deduction at between 50 and 65 percent of your disposable earnings, depending on whether you support another family and how old the arrears are.1Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment
How Much of Your Paycheck the Order Can Take
The calculation runs off your disposable earnings, not your gross pay and not your take-home. Disposable earnings are what remains after legally required deductions: federal income tax, Social Security, and Medicare. Voluntary deductions like health insurance premiums, 401(k) contributions, or union dues do not reduce the base the percentage is applied to.2Office of the Law Revision Counsel. 15 USC 1672 – Definitions
From that disposable amount, the Consumer Credit Protection Act allows the following maximums:1Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment
- 50 percent if you are supporting another spouse or dependent child who is not covered by the order.
- 55 percent if you are supporting another family and the arrears are more than 12 weeks old.
- 60 percent if you are not supporting another spouse or dependent child.
- 65 percent if you are not supporting another family and the arrears are more than 12 weeks old.
These caps apply to all support-related withholding combined. If more than one order is in play, the total deducted still cannot exceed the applicable percentage.
What Income the Order Can Reach
Federal law defines earnings broadly: wages, salary, commissions, bonuses, and periodic pension or retirement payments all qualify.2Office of the Law Revision Counsel. 15 USC 1672 – Definitions Severance, profit-sharing distributions, vacation payouts, disability benefits, and workers’ compensation are also reachable when they stand in for lost wages.
Social Security Disability Insurance benefits can be garnished for child support arrears. The Social Security Administration applies the same percentage tiers above, measured against your monthly benefit after mandatory deductions such as Medicare premiums.3Social Security Administration. How Garnishment Withholding Is Calculated If a state sets a lower cap, SSA uses the smaller limit.
Independent contractors are not shielded. When a business receives a withholding order against someone it pays as a non-employee, it must withhold from those payments. The federal percentage caps, though, were written to protect employees and do not apply to contractors; state law sets the limit instead, and in some states the entire payment can be captured until arrears are satisfied.4Administration for Children and Families. Processing an Income Withholding Order or Notice
Bonuses and Lump-Sum Payments
One-time payments are where arrears often get taken in a single chunk. There is no uniform federal rule; each state sets its own procedure. Many states require the employer to notify the child support agency before issuing a lump sum above a stated threshold (commonly between $100 and $500), then hold the funds for a window that typically runs 10 to 30 days so the agency can direct how much to intercept.
Several states cap lump-sum withholding at 50 percent of the net payment. Others let the agency take up to the full arrears balance if the payment does not count as “earnings” under federal law. The distinction turns on whether the lump sum is compensation for personal services (percentage caps apply) or something else, such as an asset distribution (full attachment possible).
Priority Over Other Debts
A child support withholding order outranks almost every other claim on your paycheck. Your employer must pay support before honoring wage assignments, commercial garnishments, state and local tax levies, and nontax federal debts.4Administration for Children and Families. Processing an Income Withholding Order or Notice The one exception: an IRS tax levy that was in place before the underlying child support order was established keeps its priority. Everything else sits behind the IWO.5Administration for Children and Families. Income Withholding
When There Are Multiple Child Support Orders
If you have more than one order, current support for every active case is funded first. Only after each ongoing monthly obligation is covered does any remaining room under the federal cap go to arrears. If the total owed across all orders exceeds the cap, the employer splits the available amount proportionally based on each order’s size. Arrears across multiple cases are handled the same way. No single case can absorb everything while others go unpaid.
What a Valid IWO Looks Like
Every child support income withholding order has to be issued on a standardized federal form. Courts, state agencies, tribes, and private attorneys are all required to use the same document.6Administration for Children and Families. Income Withholding for Support (IWO) Form, Instructions and Sample The form identifies the employee by full legal name and Social Security number, the employer by name and Federal Employer Identification Number, the court or agency that issued it, the case number, the separate dollar amounts for current support and for arrears, and the payment address for the state disbursement unit.7Administration for Children and Families. Income Withholding for Support (IWO) Form If the order comes from anyone other than a state agency or court, a copy of the underlying support order has to be attached. Without it, the employer should reject the form.
Orders can arrive by certified mail, fax, or through the electronic income withholding system (e-IWO), which lets agencies transmit orders digitally to participating employers.8Administration for Children and Families. e-IWO
What Your Employer Has to Do and When
The deadline to start withholding is set by the law of the state where you work; most states require it to begin within the first or second pay period after the employer receives the order. Once money is deducted, federal law gives the employer seven business days from the regular pay date to send the funds to the state disbursement unit.9Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement
Most states let an employer charge a small administrative fee to the employee for processing the withholding. If that fee plus the support amount would push past the federal cap, the employer takes the full fee and reduces the support payment; the shortfall becomes additional arrears owed by the employee.10Administration for Children and Families. Income Withholding – Answers to Employers’ Questions
Employers who ignore a valid order face penalties in every state. Those can include being held liable for the full amount that should have been withheld, plus additional fines.10Administration for Children and Families. Income Withholding – Answers to Employers’ Questions
If an employee with an active order leaves the job, the employer has to notify the issuing agency as soon as possible, giving the employee’s name, the IWO case number, the separation date, a last known home address, and any known new employer.11Administration for Children and Families. Reporting Employee Terminations for Private Employers and Federal Agencies The IWO form includes a section for this. Prompt reporting lets the agency redirect the order to the next payroll before the balance climbs.
You Cannot Be Fired for a Single Garnishment
Federal law prohibits an employer from firing you because your wages are being garnished for one debt. A single child support case qualifies. An employer who violates the rule faces a fine of up to $1,000, up to a year in prison, or both.12Office of the Law Revision Counsel. 15 USC 1674 – Restriction on Discharge From Employment by Reason of Garnishment Protection for employees with two or more garnishments from unrelated debts is left to state law.
If You Think the Amount Is Wrong
Every state has to give you a way to challenge the withholding. The recognized ground is a “mistake of fact”: the arrears balance was calculated incorrectly, payments you made were not credited, or you were misidentified as the obligor.9Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement
The process usually starts by contacting the child support agency named on the IWO to request a review or administrative hearing. Submit the request in writing and attach your documentation: canceled checks, bank records, payment history printouts, anything that supports your position. One important limit: disagreeing with the original court order itself is not a mistake of fact. Changing the underlying monthly amount requires a separate modification petition filed with the court.
Why Arrears Don’t Go Away
Child support debt behaves differently from most other debts. Under the Bradley Amendment, every missed payment becomes a legal judgment the moment it comes due. That judgment is entitled to full enforcement in every state and cannot be retroactively reduced, even by the court that issued the original order.9Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement The narrow exception: a court can modify amounts that accrued while a modification petition was pending, but only from the date the other parent was notified of the petition.
Most states also charge interest on the unpaid balance. Rates vary widely, from roughly 4 percent in some jurisdictions to 12 percent in others, with a few tied to market benchmarks. A $20,000 arrears balance in a state charging 10 percent adds about $2,000 a year even while payments are coming in. Employers follow the interest rules of the state that issued the order.10Administration for Children and Families. Income Withholding – Answers to Employers’ Questions
There is no federal statute of limitations on child support arrears, and many states allow enforcement indefinitely, including long after the child reaches adulthood. Some states impose time limits, but those windows tend to be long. Waiting rarely helps.
When There Is No Paycheck to Garnish
Wage withholding is the frontline tool, but it is not the only one. Once arrears pass $2,500, the federal government can deny, revoke, or restrict the obligor’s passport.13Office of the Law Revision Counsel. 42 USC 652 – Duties of Secretary State agencies can intercept federal and state tax refunds, suspend driver’s and professional licenses, place liens on real property, levy bank accounts, seize other assets, and report the debt to credit bureaus. For self-employed parents, where there is no payroll department to receive an IWO, these tools often become the main enforcement route.