Calculatorpreliminary calculation

Penalty for overdue child support

Penalty calculator for late child-support payments

Select the basis for child support, add the full sequence of monthly accruals and all payments by date. The calculator allocates funds to the oldest debt, excludes the payment date for the amount paid off and shows the preliminary penalty as of the end of the selected day. For cases in Kyiv and Kyiv Region, check the result against the enforcement officer’s calculation and evidence of the payer’s fault.

Legal workflow with calculations and documents

Current: July 21, 2026
Format: Online
Value: 0 ₴

Online tool

Preliminary calculation of child-support penalty

Each monthly accrual is calculated over separate exact intervals, payments are allocated FIFO, and the 100% cap is applied once to the aggregate base.

Ground for paying alimony

This determines whether the enforcement officer’s penalty is taken into account: Article 196 of the Family Code deducts it from the alimony penalty cap only for court-awarded alimony.

Monthly child-support accruals

Enter the complete chronological sequence of months needed for FIFO, without duplicates. For a standard monthly payment, delay starts on the first day of the following month.

Monthly accrual 1

Month for which child support is dueSelect the completed month after which the first day of delay has already occurred.

Amount due, UAHEnter a positive amount for this month to the nearest kopeck.

Actual payments

Add all payments that can be identified as child support. Funds first pay off the oldest debt, then the accrual for the payment month; future months are not paid automatically.

Payment 1

Payment date 1

The payment date is excluded from the penalty days for the amount paid.

Payment amount, UAHEnter the positive amount actually paid, to the nearest kopeck.

Payment 2

Payment date 2

The payment date is excluded from the penalty days for the amount paid.

Payment amount, UAHEnter the positive amount actually paid, to the nearest kopeck.

Calculate as of the end of the day

The selected date is included for the unpaid balance. Maximum: the current date according to Europe/Kyiv.

Enforcement officer’s fine for court-awarded child support, UAHOnly for a court decision or court order. Enter the exact amount of the fine already imposed for the same debt; it cannot exceed the actually overdue base. The field is disabled for a contract.

Estimated result

Preliminary calculation

Preliminary penalty after the cap1 475,00 UAH

Aggregate formula: min(1 475,00 UAH; max(0; 4 000,00 UAH − 0,00 UAH)) = 1 475,00 UAH

Amounts are stored in kopecks. The 1% is calculated as the exact fraction 1/100 without daily rounding; one total is rounded to the nearest kopeck using half-up rounding.

Main caveat: The penalty depends on the payer’s fault; the court may reduce it based on the payer’s financial and family circumstances, and the enforcement officer determines the official alimony arrears, or the court does so in a dispute. Therefore, the arithmetic does not guarantee the amount recovered.

All accruals: 5 000,00 UAH
All payments: 2 500,00 UAH
Remaining debt: 2 500,00 UAH
Excess payment: 0,00 UAH

Penalty without a cap: 1 475,00 UAH
Actually overdue 100% base: 4 000,00 UAH
Enforcement officer’s fine: 0,00 UAH
Limit after fine: 4 000,00 UAH

Monthly breakdown of the calculation
Month	Accrued	Paid using FIFO	Balance	Days	Penalty before final rounding
August 2026	5 000,00 UAH	2 500,00 UAH	2 500,00 UAH	53	1 475,00 UAH01/09/2026–10/09/2026: 4 000,00 UAH × 10 days 11/09/2026–23/10/2026: 2 500,00 UAH × 43 days

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How we calculate

Formula

For each interval: unpaid balance in kopecks × number of calendar days × 1 / 100.
Penalty without a cap = sum of exact results for all intervals across all entered months.
100% base = the total portions of monthly accruals that were actually overdue by at least one day.
Adjusted cap for court-awarded child support = 100% base − enforcement officer’s fine for the same debt; for an agreement it equals the 100% base.
Preliminary penalty = min(penalty without a cap; adjusted cap), followed by one final rounding to the nearest kopeck.

Check

What may change or exclude the penalty

The payer must be at fault for the debt arising. The payer must prove lack of fault; the calculator cannot determine this.
The court may reduce the penalty based on the payer’s financial and family circumstances; Article 196 provides a separate exception for a minor payer.
The state or private enforcement officer calculates the debt; the court does so if it is disputed. Do not enter unverified amounts from your own recalculation of income into the calculator.
A payment without a designation or other evidence identifying it as alimony may be treated differently.
A complete sequence of older debt and payments is required for correct FIFO allocation. A missing month changes how all later payments are allocated.
A payment is not allocated to months that have not yet begun on its date. The tool shows any unused portion as an excess; a separately evidenced advance requires manual review.
The standard start on the first day of the following month does not apply without review if the contract or decision sets another specific payment date or procedure.
The selected end date is included for the unpaid balance using an “as of end of day” model. Check the date through which the penalty is claimed in the case against the claim and judgment.
Indexation, release from child-support arrears, foreign currency, additional expenses for a child, and contractual penalties are not included in this calculation.
The enforcement officer’s fine is counted only for court-awarded child support and the exact amount in the resolution for the same arrears. It cannot exceed the actual overdue base.

How the calculator calculates child support penalties

Under Article 196 of the Family Code of Ukraine, the recipient of child support may claim a penalty of 1% of the unpaid amount for each day of delay. For a standard monthly payment, calculation for a particular month starts on the first day of the following month.

A partial payment does not cancel the penalty already accrued. It first pays the oldest entered arrears, then the accrual for the payment month. Future months are not paid automatically. The payment date is excluded only for the amount repaid; the unpaid balance continues accruing a penalty from that date.

The calculator totals the exact penalty for all intervals and compares it once with the aggregate portion of accrued amounts that was overdue for at least one day. Payments made before the delay began reduce this base. For child support awarded by a court, the base is further reduced by the entered enforcement officer’s fine; no fine applies to a contract.

Methodology

Calculation methodology

Step-by-step calculation methodology

Sort monthly accruals from oldest to newest and set the first day of the following month as the standard start of arrears for each.
Sort payments by date and allocate each FIFO: first to the oldest unpaid month, then through the payment month, but not to future months.
For each part of the debt, count all calendar days: exclude the payment date for the amount paid, and include the end date for the balance as of the end of that day.
Add the exact products “balance × days × 1/100” without daily or monthly rounding.
We build the aggregate base only from installments that were overdue by at least one day, apply the 100% limit once, and reduce it by the permissible penalty for court-awarded child support.
We compare the exact penalty with the cap and only then round the final amount to the nearest kopeck.

Example

Example with two partial payments

UAH 5,000 was due for January. UAH 1,000 was paid on January 31 and another UAH 1,500 on February 11. The calculation for preparing documents in Kyiv is made as of the end of February 20.

Monthly accrual for January: UAH 5,000
Payment on 31 January: UAH 1,000 — before the delay began
Payment on 11 February: UAH 1,500
End date: February 20 inclusive for the remaining balance

A pre-default payment reduces the 100% base to UAH 4,000. From 1 to 10 February: UAH 4,000 × 1% × 10 days = UAH 400. From 11 to 20 February: UAH 2,500 × 1% × 10 days = UAH 250. The uncapped penalty and preliminary result are UAH 650; the remaining debt is UAH 2,500.

The example shows arithmetic only. The court separately assesses fault and may reduce the penalty; check the debt amount against the enforcement officer’s calculation.

Documents

What to prepare to check the calculation

Court decision, court order, writ of execution, or child-support agreement stating the amount and payment schedule.
Official monthly calculation of debt by a state or private enforcement officer.
Bank statements, receipts, acknowledgments and payment descriptions showing the date and connection to child support.
The enforcement officer’s fine order and the exact fine amount, if child support was awarded by a court and the fine must be deducted from the penalty cap.
Documents about the payer’s fault or lack of fault and their financial and family circumstances.
The selected claim period and the date through which the penalty is claimed, especially if the debt was still unpaid then.

Official sources and judicial methodology

Family Code of Ukraine — Articles 195–197Rate of 1% per day, fault, maximum amount, enforcement officer’s fine, possible court reduction of the penalty, and the method for determining arrears.
Grand Chamber of the Supreme Court — monthly calculation methodExplains calculating each monthly payment, starting from the following month, partial payments, and excluding the payment date.
Civil Cassation Court — FIFO and aggregate 100% capConfirms FIFO repayment of the oldest arrears and compares total penalties with total arrears for the listed months.
Law of Ukraine “On Enforcement Proceedings” — Article 71Regulates enforcement officer fines for long-term child-support arrears; the calculator requires the actual amount from the order.

Prepared: The methodology was prepared by the website editorial team based on official sources.
Checked: The calculation has been reviewed by a lawyer; no personal data was published.
Important: The tool provides a preliminary result and does not replace document review.

Current as of July 21, 2026. The calculation is preliminary and depends on the documents and circumstances.

Frequently asked questions

Frequently asked questions about child-support penalties

From what date does a penalty accrue on monthly child support?

For a standard monthly payment, the period starts on the first day of the month after the month for which child support was due. If the decision or agreement sets another specific date, check the method separately.

How are partial child support payments accounted for?

A payment is applied to the oldest entered arrears. The payment date is not counted for the portion paid off, while the penalty continues to accrue on the remaining balance, including the day of a partial payment.

Can the penalty exceed the debt amount?

The total penalty is capped at 100% of the debt on which it accrues. In aggregate, the calculator includes only portions of monthly accruals that were at least one day overdue; amounts paid on time do not increase the base.

Why enter a fine imposed by a state or private enforcement officer?

Article 196 of the Family Code allows this reduction only for child support awarded by a court. Select a court decision or court order and enter the exact amount from the ruling for the same debt. The field is disabled for a contract.

Will the court award the amount shown by the calculator?

Not necessarily. The court checks fault, the accuracy of the debt and payments, and may reduce the penalty based on the payer’s financial or family circumstances. The result is an arithmetic aid, not a prediction of the decision.

What does an excess payment in the result mean?

This is the part of payments that could not be allocated to old debt or accruals for the payment month. It does not create a negative debt or automatically pay future months; check missed periods, the payment reference, or a separately documented advance.

Free initial consultation

Need to compare the penalty with the enforcement officer’s calculation?

Submit an application if you need to check the monthly debt, payment descriptions, fault, the enforcement officer’s fine, or prepare a calculation and case position in Kyiv or Kyiv Oblast.

the calculator result can serve as a reference for a conversation
documents, deadlines, or contract terms may change the conclusion
briefly describe the circumstances in the form if needed