How Child Support Wage Garnishment and IWOs Work

Child support wage garnishment works through a federal form called an Income Withholding Order (IWO) that tells your employer to deduct a set amount from each paycheck and send it to a state disbursement unit, which then pays the custodial parent. Federal law caps the deduction at 50% to 65% of your disposable earnings depending on your situation, and the order takes priority over almost every other claim on your pay. Once your employer receives a valid IWO, withholding is immediate and legally binding, and the employer has very limited room to question it.

How Much of Your Paycheck Can Be Taken

The Consumer Credit Protection Act sets the ceilings. If you are supporting a spouse or another child who isn’t covered by the withholding order, up to 50% of your disposable earnings can be taken. If you don’t have those additional dependents, the cap rises to 60%.¹

When you owe back support that is more than 12 weeks old, both percentages go up by 5 points. That pushes the ceiling to 55% if you have other dependents and 65% if you don’t.¹ These are federal maximums. States can set lower limits, and if state and federal rules conflict, whichever one produces the smaller garnishment controls.²

What Counts as Disposable Earnings

The percentage applies to disposable earnings, not gross pay and not take-home pay. Disposable earnings are what’s left after deductions required by law: federal and state income tax, Social Security, Medicare, and state unemployment insurance.³ Legally mandated retirement contributions also reduce the base.²

Voluntary deductions do not. A 401(k) contribution you chose to make, optional health insurance, union dues, charitable giving through payroll: none of these reduce disposable earnings for garnishment purposes. That is why a 50% garnishment can feel like it is eating up more than half the money that actually hits your account. The withholding is calculated off a bigger number than what you are used to seeing on your pay stub.

What Income the Order Reaches

Child support withholding isn’t limited to regular wages. It applies to commissions, bonuses, workers’ compensation payments, disability benefits, pensions, and retirement income.⁴ If a payer is sending you money for work you did or a benefit you earned, the order almost certainly reaches it. Switching to contract work, moving onto a pension, or living off disability doesn’t put income beyond collection.

Lump-sum payments like bonuses, commissions, and severance are generally subject to withholding too, but the reporting rules vary sharply by state. Some states require the employer to notify the child support agency before releasing any lump sum. Others only require notice above a dollar threshold, which can run anywhere from $100 to $1,000. A few don’t require reporting at all. In states that do, employers often have to hold the payment for a waiting period, typically 14 to 30 days, while the agency decides how much should be applied to arrears. If you’re current on ongoing support but still owe back payments, this is often where the agency catches up.

The Income Withholding Order Itself

Every child support withholding order has to use the same OMB-approved federal form (OMB 0970-0154), whether it comes from a court, a state child support office, a tribal agency, or a private attorney.⁵ A different format is a defective order and the employer should reject it.⁶

The form carries the employer’s name and payroll address, your Social Security number and date of birth, the court case or agency ID, and the names and birth dates of the children. It breaks the obligation into separate dollar amounts for current support, arrears, medical support, and any other court-ordered costs, so the employer knows exactly how much to deduct and where it goes.⁷ It also tells the employer how often to send payments to match the pay schedule. When a private party, rather than an agency or court, sends the IWO, a copy of the underlying support order has to be attached.⁶

An employer who follows an order that is “regular on its face” is shielded from civil liability, which is why employers rarely push back. They are expected to reject orders that direct payment somewhere other than a state disbursement unit, that list withholding as a percentage instead of a dollar figure, that are missing required information, or that arrive on the wrong form.⁶

What Your Employer Has to Do, and When

Once a valid IWO arrives, withholding has to start no later than the first pay period after a short implementation window, in most states 14 days from receipt. The money then has to be sent to the state disbursement unit within seven business days of your payday.⁸ Some states require faster turnaround.

An employer that receives a valid order and fails to withhold is personally liable to the state for the full amount that should have been deducted.⁸ States also have to fine employers who ignore the order. Payments go to the state disbursement unit rather than straight to the other parent, and that unit’s records become the official payment history. If there is ever a dispute about whether you paid, those records are the answer. Side payments made directly to the other parent generally don’t count unless they are documented through the state system.

States can let the employer deduct a small administrative fee from your remaining pay, usually about $1 to $5 per pay period, with a few states allowing more for the first payment. If your employer is in a different state than the one that issued the order, the fee follows the rules of your work state.⁸

Priority Over Other Garnishments

Child support outranks almost every other claim on your paycheck. It gets paid before creditor garnishments, wage assignments, non-tax federal debts, and state or local tax debts. The only thing that can come ahead of it is an IRS tax levy that was in place before the child support order was established.⁹

When you owe support under more than one order, say for children with different parents, the employer doesn’t just pay the one that arrived first. The employer has to follow the allocation rules of your work state, which usually either prorate payments based on how much is owed under each order or divide the available money equally across orders. The federal cap still applies to the combined total.⁹

If the Amount Is Wrong or Should End

Only you, as the noncustodial parent, can dispute the terms of an IWO. Your employer can’t contest it for you, and won’t. If the amount being withheld doesn’t match what the court ordered, or the underlying order has been modified, you have to go back to the issuing agency or the court. The employer will keep deducting the amount shown on the current IWO until a corrected one arrives.⁹

Withholding also doesn’t stop on its own when a child turns 18 or graduates. You generally need a court order or agency action to terminate the IWO, and you’ll have to show that the obligation has ended for every child on the order and that no arrears remain. Until that paperwork clears, the deductions keep coming.

If your finances have genuinely changed, a job loss, a pay cut, a new disability, the right move is to petition the court to modify the support order. The garnishment follows the order, so the order has to change first. Falling behind while you wait for the hearing still creates arrears, which then trigger the extra 5-point bump on the garnishment ceiling. Filing promptly matters.

Changing jobs doesn’t end the order either. Your old employer notifies the child support agency when you leave, and the agency sends a fresh IWO to your new employer. Any gap in collection becomes arrears.

Your Employer Can’t Fire You Over the Order

Federal law prohibits an employer from firing you, refusing to hire you, or disciplining you because a child support withholding order exists against you. States are required to enforce this and to fine employers who violate it.⁸ Separately, the Consumer Credit Protection Act makes it a federal crime to fire an employee because of a single wage garnishment, punishable by a fine up to $1,000, imprisonment up to one year, or both.¹⁰ If you believe your employer retaliated against you because of the order, your state’s child support enforcement agency or a labor attorney is the place to start.

If There’s No Paycheck to Garnish

Wage withholding is the main collection tool, but it isn’t the only one, and self-employment doesn’t put you out of reach. When arrears build up, the enforcement options expand. Federal law requires the State Department to deny or revoke a passport when a parent owes more than $2,500 in child support.¹¹¹² States can suspend driver’s licenses and professional licenses, intercept federal and state tax refunds, place liens on property, and levy bank accounts. For a self-employed parent without an employer to receive an IWO, those tools become the primary collection method.

1
Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment
2
U.S. Department of Labor. Fact Sheet 30 – Wage Garnishment Protections of the Consumer Credit Protection Act (CCPA)
3
Office of the Law Revision Counsel. 15 USC 1672 – Definitions
4
Administration for Children and Families. Income Withholding
5
Administration for Children and Families. Income Withholding for Support (IWO) Form, Instructions and Sample
6
Administration for Children & Families. Income Withholding for Support Instructions
7
Administration for Children and Families. Income Withholding for Support
8
Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures
9
Administration for Children and Families. Processing an Income Withholding Order or Notice
10
Office of the Law Revision Counsel. 15 USC 1674 – Restriction on Discharge From Employment by Reason of Garnishment
11
Office of the Law Revision Counsel. 42 USC 652 – Duties of the Secretary
12
U.S. Department of State. Passports and Child Support Debt