What to bring and know before you walk in
Child support mediation works best when both parents show up with documents, a clear picture of their finances, and realistic expectations about what the mediator can and cannot do. The mediator does not decide the amount — they help you and the other parent reach an agreement that a judge will then review. You need to know your own income, expenses, and custody arrangement cold, because the mediator will ask for specifics and the other parent will challenge anything vague.
Bring originals or certified copies of the last two years of tax returns, recent pay stubs (usually the last three months), and bank statements showing regular deposits. If you are self-employed, bring profit-and-loss statements or business tax returns. If your income has changed recently — a job loss, a raise, a second job — bring documentation of that change and the date it happened. The mediator needs to see what you actually earn, not what you think you earn.
Key Takeaways
- Bring tax returns, pay stubs, and bank statements so the mediator can see your real income and the other parent cannot dispute it later.
- Write down your monthly expenses before the session, including housing, childcare, insurance, and debt payments, because the mediator will ask how much you actually spend.
- Know your custody schedule in detail — how many overnights each parent has, whether it is fixed or flexible, and any planned changes — because child support amounts depend on it.
- Decide in advance what outcome you can live with, including the monthly amount and any add-ons like health insurance or school costs, so you do not agree to something you cannot afford.
- Bring a list of questions for the mediator about how your state calculates support and what happens if circumstances change after the agreement.
Organize your income and expense records
The mediator will ask you to account for every dollar you earn and every dollar you spend. Start by listing your gross monthly income — that is, before taxes. Include wages, salary, bonuses, commissions, rental income, disability payments, unemployment, and any other regular money coming in. If your income varies month to month, calculate an average over the last year or bring twelve months of pay stubs so the mediator can see the pattern.
Next, list your monthly expenses. Write down housing (rent or mortgage), utilities, phone, internet, groceries, transportation, childcare, health insurance, car insurance, debt payments, and any other regular bills. Do not guess. Pull up your bank and credit card statements for the last three months and add them up. The mediator will use this to understand how much you can afford to pay or why you need support. If you claim you spend $2,000 a month but the other parent can show you only spend $1,200, your credibility drops and so does your negotiating position.
If you have other children who are not part of this case, bring documentation of what you pay for them — child support orders, school bills, medical expenses. Most states reduce the amount you pay for the child in mediation if you are already supporting other children. The mediator needs to see proof.
Understand your custody arrangement and how it affects the amount
Child support is not just about income — it is also about how much time each parent spends with the child. Most states use a formula that factors in both. You need to know exactly how many overnights per year the child spends with each parent, or what percentage of time. If the custody arrangement is not yet finalized, you need to know what you are proposing and what the other parent has proposed.
Write down the current schedule: which days and nights does the child spend with you, which with the other parent, and does this change seasonally or during school breaks. If custody is flexible or informal right now, write down what actually happens — do not assume the mediator will accept a vague description like "we split time." Bring a calendar if it helps. The mediator will use this to plug into your state's formula, and if you and the other parent disagree on the schedule, that disagreement will affect the support amount.
If you are proposing a change to custody — more overnights, a different school schedule, a move — bring documentation of why. A job change, a school transfer, or a housing situation that affects the child's stability all matter. The mediator will not make the custody decision, but they will help you and the other parent understand how different schedules change the support amount.
Know your state's child support formula and guidelines
Every state has a formula for calculating child support. Some use income shares (both parents' income is pooled and split by percentage), some use a percentage of the paying parent's income, and some use a hybrid. The formula also has a cap — most states stop calculating support once income reaches a certain level, often $150,000 to $250,000 annually, though this varies. You need to know which formula your state uses and what the cap is, because it changes what you will owe or receive.
Before mediation, look up your state's child support guidelines on your state court website or ask the mediator to explain them at the start of the session. Many states publish worksheets online that show exactly how the formula works. If you plug in your income and the other parent's income, you can see what the guideline amount would be. This is not the final number — the mediator can help you agree to something different if both parents consent — but it is the baseline. Going in knowing the guideline amount means you will not be blindsided, and you can decide whether to negotiate above or below it.
Prepare for add-ons beyond the base amount
Child support is usually just the monthly base amount, but many agreements also include add-ons: who pays for health insurance, who covers uncovered medical and dental costs, who pays for school or childcare, and who covers extracurricular activities. These can add hundreds of dollars per month. Decide before mediation what you can afford to contribute and what you expect the other parent to cover.
Bring documentation of current costs: health insurance premiums, childcare invoices, school tuition or fees, and any regular medical or therapy expenses. If the child has special needs or ongoing medical treatment, bring those records. The mediator will ask whether these costs are shared equally, split by income percentage, or assigned to one parent. If you have strong feelings about who should pay for what, write them down with your reasoning — the mediator will help you and the other parent find middle ground.
Also think about what happens if circumstances change. What if one parent loses a job, gets a significant raise, or the custody arrangement shifts? Some agreements include language about when support can be modified. Knowing your position on this before you sit down means you can negotiate it as part of the agreement rather than discovering later that you are stuck with an amount you cannot afford.
Decide what you can and cannot accept
Before the mediation session, sit down alone and decide what outcome you need. What is the lowest monthly amount you can accept if you are the paying parent, or the highest you can afford? What is the minimum you need if you are receiving support? What add-ons matter most to you — health insurance, school costs, childcare? What are you willing to compromise on?
Write this down. Do not share it with the other parent, but have it clear in your own mind. Mediation works because both parents come to the table willing to move from their opening position. If you walk in with no flexibility, mediation will fail and you will end up in court, which costs more money and takes longer. But you also should not agree to something you cannot actually pay or that leaves you unable to support yourself. The mediator's job is to help you find the middle ground, not to pressure you into a bad deal.
If you have a lawyer, talk to them before mediation about what is reasonable in your state and your situation. If you do not have a lawyer, many mediators can point you to resources that show what similar cases have settled for. Knowing the range helps you negotiate from a realistic position.
Prepare questions for the mediator
Write down questions you want to ask the mediator before the session starts. These might include: How does my state calculate support? What happens if I get a raise or lose my job? Can we modify the agreement later? What if the other parent does not pay? How long does the agreement last? What if custody changes? Can we include add-ons like health insurance in the agreement, or do we handle those separately?
The mediator will explain the process at the start, but having your questions ready means you will not forget them in the moment. Some mediators also offer a pre-mediation phone call or email exchange where you can ask logistical questions — whether to bring the child, whether lawyers can attend, what the fee is, and how long the session usually takes. Use that time to get clarity so you can focus on the negotiation itself during the mediation.
Frequently Asked Questions
Should I bring a lawyer to mediation?
You can, but it is not required and many mediators prefer to work with both parents directly. If you bring a lawyer, the other parent often will too, which can slow things down and increase costs. Many parents bring a lawyer only to a follow-up session after they have reached a tentative agreement, to review the language before signing. Ask the mediator what is typical in your area.
What if I do not have all my documents ready?
Tell the mediator before the session starts. Most mediators will reschedule or allow you to submit documents later, because an agreement based on incomplete information often falls apart. It is better to delay mediation a week than to agree to something you regret because you did not have your numbers straight.
Can the mediator tell me what amount is fair?
No. The mediator can tell you what your state's guideline formula produces, and they can tell you what similar cases have settled for, but they cannot tell you what you should agree to. That decision is yours and the other parent's. If you cannot reach agreement, the mediator will say so and you will go to court, where a judge will decide.
What if the other parent lies about their income?
That is why you bring documents. If the other parent claims they earn $40,000 but you have a recent tax return showing $80,000, you can challenge it in the mediation. If you suspect hidden income or fraud, tell the mediator — they may recommend you go to court instead, where a judge can order discovery and subpoena records.
How long does mediation usually take?
Most child support mediations take two to four hours in a single session, though some take two sessions. If you and the other parent are far apart on the amount or custody, it may take longer. Ask the mediator for a time estimate when you schedule, and plan accordingly.