Reduction of Child Support

Quick Overview:
A reduction in child support may be considered when circumstances have changed significantly and permanently. Typically, this involves a parent’s serious illness, an objective loss of income, a new obligation to provide support, a change in the extent of child care, or a change in the child’s needs. However, the court does not examine only the current payment amount. It assesses the parent’s abilities, opportunities, and financial circumstances, including whether the parent has, without good cause, turned down a better job or is taking on unreasonable financial risks.

When It Makes Sense to Request a Reduction in Child Support

Child support can be modified if circumstances change. In the case of a minor child, if circumstances change and the parents cannot agree on child support, the court will decide even without a petition. In practice, however, a parent seeking a reduction in child support usually files a petition with the court and must provide evidence of the changed circumstances.

The change in circumstances must be genuine, significant, and generally not merely short-term. A temporary loss of income lasting a few weeks, general price increases, or dissatisfaction with the original judgment are usually insufficient.

Reasons for reducing child support may include, for example:

• long-term illness or disability of the parent obligated to pay child support,
• objective loss of employment and a demonstrable search for new work,
• a significant and long-term reduction in income due to reasons beyond the parent’s control,
• the emergence of another child support obligation,
• a substantial change in the extent of child care,
• the cessation of certain needs of the child,
• a change in the financial circumstances of both parents.

Conversely , it is generally not sufficient on its own that a parent does not want to pay as much, voluntarily leaves a better-paying job, ceases business operations without a serious reason, transfers assets to someone else, or begins to claim that they “have no money” without providing evidence of their income and assets.

The basic rule remains the same: the amount of child support is determined based on the justified needs of the recipient and their financial circumstances, as well as on the ability, means, and financial circumstances of the parent obligated to pay. Starting in 2026, the law explicitly adds that future changes in the child’s needs will also be taken into account, provided they can be reasonably determined.

What the Court Considers When Deciding on Child Support

The court does not base its decision solely on how much money a parent currently has in their bank account. It considers the overall picture: the child’s needs, the parents’ income and financial capacity, their assets, the extent of personal care provided, and whether the parent is acting in good faith.

The Civil Code stipulates thatwhen assessing the obligor’s abilities and means, it is necessary to examine whether they have, without good cause, given up a more advantageous job or gainful employment, and whether their income corresponds to what they could earn given their health, education, qualifications, and the situation on the labor market. The court also examines whether the obligated party has, without good cause, foregone financial benefits or is taking on unreasonable financial risks.

In practice, the court assesses, in particular:

• the child’s legitimate needs,
• the child’s age and their educational or health situation,
• the child’s foreseeable future expenses,
• the income of both parents from employment or business,
• the parents’ realistic earning potential,
• the parents’ assets, savings, and standard of living,
• the parents’ other child support obligations,
• the extent of each parent’s personal care,
• the parents’ expenses for housing, health care, and basic necessities,
• whether a parent is intentionally working fewer hours or for a lower wage.

Another important rule is that the child’s standard of living should, in principle, be consistent with that of the parents. This consideration even takes precedence over the child’s legitimate needs. In other words: if a parent has a high standard of living, they cannot provide the child with only the bare minimum.

Example: A father loses his job due to the elimination of his position; he is registered with the employment office, is actively seeking work, and, due to a health limitation, cannot perform his original profession. This may be a relevant reason to reduce child support. The situation would be different if he voluntarily left a well-paid job, turned down job offers, and claimed that he now “wants some peace and quiet.” In such a case, the court may base its decision on the income he could objectively earn.

High Inflation, Expensive Housing, and Job Loss

General inflation or rising prices alone are not usually grounds for reducing child support. This is because rising prices also affect the child and the parent who cares for him or her. The costs of food, housing, school, transportation, clothing, and extracurricular activities are also increasing for the child. In some cases, on the contrary, rising living costs may lead to a request to increase child support.

However, this does not mean that the economic situation of the parent obligated to pay child support is irrelevant. If a parent’s income is objectively and permanently reduced—for example, due to layoff, serious illness, disability, restrictions on business operations caused by external factors, or another verifiable change—this may constitute a change in circumstances.

The decisive factor is whether the change is:

• actual,
• substantial,
• long-term,
• not of their own making or at least reasonably explainable,
• and supported by specific evidence.

It is not enough to claim that “it’s expensive” or “I don’t have the means to pay.” The parent must show the court their income, expenses, health status, employment opportunities, and the steps they have taken to earn an income.

Example: A motheris required to pay child support of 6,000 CZK per month. Following an injury, she is unable to perform her previous job, earns a lower income, and is undergoing long-term medical treatment. If she provides medical reports, proof of her income, and evidence of her efforts to resolve the situation, her request to reduce child support may have a realistic basis.

New Child Custody Regulations Effective in 2026 and Their Impact on Child Support

As of January 1, 2026, the terminology regarding child custody has changed. Old terms such as “sole custody,” “alternating custody,” and “joint custody” are no longer used in court. When making a decision, the court determines that the child remains in the care of both parents or specifies the extent of each parent’s care. This does not automatically mean a 50-50 split; the child’s best interests are the deciding factor.

This also has direct implications for child support. The Civil Code expressly requires that the court take into account whether the obligated parent personally cares for the child and the extent to which they do so. Care for the family household may also be taken into account.

Therefore, if the actual extent of care changes significantly after the original decision, this may be grounds for modifying child support. However, it is not just a matter of the number of nights. The court will examine who pays for day-to-day expenses and who provides for the child’s schooling, medical care, extracurricular activities, clothing, transportation, and other needs.

Example: A 2024 courtruling was based on the fact that the child spent most of their time with the mother and the father had “visitation” every other weekend. Since 2026, the parents have effectively agreed that the father cares for the child much more frequently, drives the child to school, pays for extracurricular activities, and covers part of the child’s clothing expenses. If this represents a stable change, it may be grounds for adjusting child support.

If the court decides that the child remains in the care of both parents without specifying the extent of care, it need not make a binding decision on child support, unless it approves an agreement between the parents. However, if the court specifies the exact extent of each parent’s care, it will also decide on the child support obligation in accordance with statutory criteria.

Parental Agreement on a Reduction in Child Support

Parents may agree to change child support payments. Starting in 2026, the significance of a parental agreement will be even greater, as the law now explicitly provides that, in the event of a change in circumstances, a parental agreement may take precedence over a court decision; if the parents cannot agree, the court will decide.

Nevertheless, we recommend caution. If a court decision or a court-approved agreement exists and the parents merely agree privately on a lower amount, the old enforceable judgment does not formally disappear. The parent entitled to receive child support could later seek the original amount under the old decision if the change was not properly addressed.

Therefore, it is advisable to have the agreement approved by the court, especially if:

• there is already a court judgment or a court-approved agreement,
• the change is intended to be long-term,
• child support is or may be enforced through collection proceedings,
• the parents do not have a stable relationship of trust,
• the reduction is significant,
• the child is a minor.

The agreement must always be in the best interests of the child. The court will not approve it if it is clear that the agreed-upon child support would be detrimental to the child. The Civil Code expressly stipulates that the court may approve the parents’ agreement unless it is evident that the agreed-upon fulfillment of the child support obligation is not in the child’s best interests.

How to File a Petition to Reduce Child Support

If an agreement cannot be reached, a petition is filed with the court. For a minor child, the competent court is the district court based on the child’s place of residence. If the reduction in child support is being addressed in connection with the parents’ divorce after 2026, the court may rule on the divorce and the child’s living arrangements in a joint proceeding. The Ministry of Justice states that in the case of the divorce of the parents of a minor child, the court will decide on the child’s arrangements—that is, custody and child support—and on the divorce in a single consolidated proceeding, unless it is appropriate to separate the matters.

The petition should include:

• the name of the court,
• the parents’ and child’s personal information,
• the reference to the original child support order,
• the current amount of child support,
• the proposed new amount,
• the date from which child support is to be reduced,
• a description of the change in circumstances,
• evidence,
• signature.

Please attach the following to your application:

• employment contract, notice of termination, or confirmation of registration with the employment office,
• pay stubs, tax returns, or accounting documents,
• proof of sick leave, disability pension, or health impairment,
• documents regarding necessary expenses,
• documents regarding a new child support obligation,
• evidence of the actual extent of child care,
• documents regarding child-related expenses that you pay directly.

A preliminary or provisional reduction in child support is not usually granted automatically. A parent should expect that the proceedings may take a long time. However, this does not mean that they should stop paying. If they stop paying entirely, they risk incurring debt, late payment interest, debt collection, and, in extreme cases, criminal consequences.

Starting in 2026, the entitled person may claim late-payment interest from a person obligated to pay child support who is in arrears.

What if the court retroactively reduces child support?

Child support may be awarded for a period of up to three years retroactive to the start of court proceedings. Regarding changes to child support, the Office for the International Legal Protection of Children states that child support may be modified retroactively for up to three years.

The rule regarding “consumed” child support is important. If the court reduces or cancels child support for a past period for a minor child who has not attained full legal capacity,the consumed child support is not refunded. However, starting in 2026, the law adds that to the extent that paid child support is not refunded, the amount of child support payable in the future will be reduced accordingly.

This is a significant change from previous practice. Previously, it was often simply stated that paid child support is not refunded. Under the new rules, the court must take the overpayment into account when setting future child support payments, but in a way that does not jeopardize the child’s basic needs. The Office for the International Legal Protection of Children summarizes that the court will take the amount of child support already spent into account when redetermining the child support obligation and will reduce the child support amount accordingly.

Example: A parent files a motion in May to reduce child support from 8,000 CZK to 5,000 CZK. The court issues its decision in November and reduces the child support retroactively starting in May. If, in the meantime, the parent paid the original 8,000 Kč and the child support was spent on the child’s needs, the other parent does not directly refund the money. However, the court may appropriately reflect the difference in lower future child support payments.

What Not to Do If You Want to Reduce Child Support

The biggest mistake is to stop paying child support without an agreement or a court order. As long as the original judgment is in effect, the parent is obligated to pay according to it. If they pay less solely based on their own decision, a debt is incurred.

In particular, avoid the following steps:

• do not pay less without a written agreement and, ideally, without court approval,
• do not hide your income,
• do not transfer assets to other people for this specific purpose,
• do not voluntarily quit your job just to pay less,
• do not take out excessive loans and then use your own debts as an excuse,
• Do not ignore court summonses,
• do not use outdated terms such as “shared custody” without explaining the actual scope of care.

Starting in 2026, it is also important to keep in mind a change in criminal law. The criminal offense of neglecting child support obligations is now defined more narrowly than before. The new legislation is intended to punish cases where a parent, by failing to pay child support, exposes the child to a real risk of hardship. However, this does not mean that nonpayment is safe. The debt can be collected through enforcement proceedings, and the entitled party may also claim interest on arrears.

If you do find yourself in a situation where you cannot afford the original child support payments, act quickly: communicate with the other parent, pay at least what you objectively can, gather evidence, and file a motion to reduce child support.

Summary

A reduction in child support is possible, but not automatic. The parent must demonstrate a change in circumstances that is significant and, as a rule, long-term. The court considers not only current income but also actual financial capacity, abilities, assets, the extent of child care, and the child’s needs.

Starting in 2026, courts will apply new regulations regarding custody and child support. There is no longer a need to argue over labels such as “sole” or “shared” custody; what matters is the actual extent of each parent’s care and the best interests of the child. The court also takes into account foreseeable future changes in the child’s needs.

If child support is retroactively reduced, the support already paid for a minor child is not refunded. However, under the new rules, future child support payments will be reduced proportionally by the amount of non-refundable child support already paid. Stopping payments without a court order is not advisable—it results in debt, late payment interest, and the risk of enforcement proceedings.