An Income Withholding Order, or IWO, is a legal document that directs your employer — or anyone else who pays you regularly — to deduct money from your earnings and send it to a state agency to satisfy child support, spousal support, or related obligations. If an unfamiliar deduction just showed up on your pay stub, this is almost certainly the reason. The form is standardized across every state and carries the force of a court order, even when a child support agency issues it administratively rather than a judge signing it.1Administration for Children and Families. Income Withholding for Support (IWO) Form, Instructions and Sample
Because the form is uniform nationwide, an employer in one state can process an order issued by a court or agency in another state without translation. The IWO itself spells out exactly how much to withhold, what it is for, and where to send the money.
What an IWO Can Require You to Pay
Child support is the most common reason an IWO is issued, but it is not the only one. The form has separate lines for current child support, spousal support (alimony), cash medical support, and past-due amounts in each of those categories. A single order can combine several of these at once — for instance, current support plus an added monthly amount chipping away at arrears.
Medical support is worth flagging because people often miss it. An IWO can require contributions toward a child’s health insurance premiums or direct cash payments for medical costs on top of the base support figure. If the total deduction looks higher than the support amount you remember, the medical support line is usually why.
What Income the Order Reaches
An IWO is not limited to a traditional paycheck. Federal guidance treats withholding-eligible income as including wages, salaries, commissions, bonuses, workers’ compensation, disability payments, pensions, and retirement benefits.2Administration for Children and Families. Income Withholding If someone pays you on a regular basis — an employer, a pension fund, a workers’ comp insurer — they can be served with an IWO and required to withhold.
Income withholding applies to individuals, not corporations. If an obligor incorporates and begins paying themselves through a business entity, the child support agency issues a new IWO directly to that corporation once it becomes the source of income.3Administration for Children and Families. Income Withholding – Answers to Employers Questions
How Much Can Be Taken From Your Pay
Federal law prevents an IWO from taking everything. The Consumer Credit Protection Act caps withholding as a percentage of your “disposable earnings,” meaning your pay after legally required deductions — federal and state income taxes, Social Security, and Medicare.4Office of the Law Revision Counsel. 15 U.S.C. 1672 – Definitions Voluntary deductions like 401(k) contributions and health insurance premiums do not reduce that figure.
The limits are:5Office of the Law Revision Counsel. 15 U.S.C. 1673 – Restriction on Garnishment
- 50% of disposable earnings if you are currently supporting another spouse or dependent child beyond the ones covered by the order.
- 60% if you are not supporting another spouse or dependent child.
- An extra 5% added to either limit if your arrears go back more than twelve weeks, bringing the effective ceilings to 55% and 65%.
These are hard ceilings. Even on a large arrearage, an employer cannot withhold more than the applicable percentage. The cap also overrides the specific dollar figure on the IWO: if the ordered amount would exceed the percentage limit, the employer withholds only up to the cap and reports the shortfall to the issuing agency.
What Your Employer Has to Do
Employers have little room to delay. The exact start deadline varies by state, with some requiring withholding to begin within three days of receiving the IWO and others allowing up to fourteen, but the general expectation is that withholding starts no later than the first pay period after the order arrives. Federal law requires the employer to forward the withheld money to the State Disbursement Unit within seven business days of the date you would otherwise have been paid.6Office of the Law Revision Counsel. 42 U.S.C. 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement
Every state operates a State Disbursement Unit, a centralized office that receives, tracks, and distributes support payments.7Office of the Law Revision Counsel. 42 U.S.C. 654b – Collection and Disbursement of Support Payments Employers remit to one place per state rather than mailing checks to individual recipients, and the SDU then forwards the money to the custodial parent or other payee. That paper trail protects both the person paying and the person receiving.
If you have more than one withholding order, child support takes priority over other garnishments. When combined obligations exceed the CCPA cap, the employer allocates the available amount according to state priority rules, generally current support first, then medical support, then arrears.
Administrative Fees
Most states let an employer deduct a small processing fee from your remaining earnings each time it processes a payment.6Office of the Law Revision Counsel. 42 U.S.C. 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement The amount varies, from about $1 per payment in some states to $5 or more in others, and a handful of states authorize no fee at all. This comes out of your pay on top of the support amount, so it is worth checking what your state allows.
If You Change Jobs
Leaving a job does not end an IWO. Your former employer must notify the child support agency as soon as possible after you leave and provide your name, case identifier, last known home address, date of separation, and your new employer’s name and address if known.8Administration for Children and Families. Reporting Employee Terminations for Private Employers and Federal Agencies The agency then issues a new IWO to your next employer.
There is almost always a gap in withholding between jobs. Your support obligation does not pause during that gap; it keeps accruing. Making direct payments to the State Disbursement Unit while you are between employers is the safest way to avoid building arrears that will trigger higher withholding later.
Can You Be Fired Over an IWO?
Federal law makes it illegal for an employer to fire you because your earnings are being garnished for a single debt. Violating that protection is a criminal offense punishable by a fine of up to $1,000, up to one year of imprisonment, or both.9Office of the Law Revision Counsel. 15 U.S.C. 1674 – Restriction on Discharge From Employment by Reason of Garnishment Many states go further, barring termination or discipline based on a child support withholding order regardless of how many orders exist, and some add remedies such as reinstatement and back pay.
The federal protection has a real limit: it covers garnishment for only one debt. Once you have two or more separate garnishments — child support plus a defaulted student loan, for instance — the federal shield no longer applies, though state law may still protect you. If you think you were fired or disciplined because of an IWO, talking to an employment attorney quickly matters, because the deadlines for filing claims are short.
How to Challenge an IWO
You generally have the right to contest the order, though the process and deadlines vary by state. Common grounds include that the arrears figure is wrong, that you don’t owe the support at all, or that the current support amount doesn’t match the underlying court order. The request for review typically has to be in writing and filed within a short window, often fifteen to thirty days after the order is issued.
Filing a challenge does not automatically stop the withholding. In most states, your employer keeps withholding while the contest is pending, and if you win, the overpayment is credited back. If your financial situation has genuinely changed — a job loss, a medical crisis, a significant income drop — the right move is to petition the court for a modification of the underlying support order rather than contesting the IWO. The IWO only enforces what the court already ordered; changing the amount requires changing the order itself.
Ignoring an IWO and hoping it resolves itself is the worst option. Unpaid support accrues interest in many states, and enforcement escalates quickly, from license suspensions to passport denial to contempt proceedings. Responding early, even if that means asking for a modification, produces far better outcomes than silence.