Employee Tax Return Calculator

In order to use this calculator, you need a Confirmation of Taxable Refund from your employer. In Czech, this is the Potvrzení o zdanitelných příjmech (POZP). It is an official earning document that declares an employee’s salary, paid taxes, and other information. Most employers will provide this document by the middle of January, although employees can also request one.

In some cases, it can be advantageous for employees to voluntarily file their taxable income. This is due to employers claiming only the standard taxpayers’ discount on the employee tax return. By law, the employer is not responsible to claim any additional tax discounts, bonuses, or relief on your behalf. This means you can miss out on ways to reduce your tax burden and increase your return in the end. The most common examples include claims for a non-working spouse, child-rearing, private pension investments and mortgage payments.

If you tick any of the boxes in the calculator after kindergarten fees, you must file a taxable income report. This includes if you worked for two employers at once, or earned above standard income. It is also necessary to file if declaring side income from self-employment, capital gains, rental income, and other taxable revenue. You will as well have to file if earning occasional income over CZK 30 000, or for receiving non-exempt gifts.

If you are entitled to bonuses beyond the standard taxpayer’s discount, it can make sense to voluntarily file. For example, perhaps you made private pension investments. Your employer will not declare these in your tax return. However, this can significantly reduce your tax burden. Thus, calculate if it’s worth it for you to file based on the total amount of discounts, bonuses, and relief you can claim.

When you tick a box in the calculator, the standard bonus amount for the full year displays by default. If you are not entitled to the full year, you will need to manually change the amount. Take for example if you were married for only part of the year. In this case, you are not entitled to the full bonus amount for a non-working spouse. The same is true for claiming children, mortgage payments, and other bonuses. If you do not qualify for the entire year, divide the standard bonus by 12 months. Then, calculate the amount by the number of months you are claiming.

The standard bonus for claiming a non-working spouse is CZK 24 840 for the full year. This amounts to CZK 2,070 per month. If claiming only 10 months, that’s CZK 2,070 x 10 = 20 700 you are entitled to claim for the year.

Yes. Say that you worked for only part of the year, but had a non-working spouse for the entire tax period. You are entitled to claim the full bonus for the spouse, despite only having employment for part of the year.

Yes. If you have two kids, it can be advantageous for you to file a return. Your employer will not claim the bonus for child-rearing for you. The bonus for a second child is CZK 22,320 for the full year (CZK 1,860 per month).

The income tax return deadline in the Czech Republic is usually 31 March of the following year. If the date falls on a weekend or public holiday, it moves to the next working day. For income earned in 2025, the deadline is 2 April 2026.

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To calculate your employee tax return in the Czech Republic, you compare your total yearly salary with the tax already withheld by your employer and then apply any tax discounts or bonuses you are entitled to claim. The result shows whether you will receive a tax refund or need to pay additional tax.

The employee tax return calculator estimates this amount based on your annual income, total tax paid from salary, and applicable deductions such as child bonuses, spouse discount, or mortgage interest. It also shows whether you are required to file a tax return under Czech tax rules.

The calculation follows Czech income tax rules for 2026 and is updated when employee tax legislation changes.

Employees in the Czech Republic receive a tax refund when the total income tax paid during the year is higher than the final annual tax liability. This may result from payroll tax overpayment, unused taxpayer discounts, tax reliefs, or tax bonuses that reduce the final tax amount after annual calculation.

Yes. Employee tax refunds in the Czech Republic are not limited to tax deductions. Refunds are determined by the final annual tax calculation and may result from payroll tax advances, taxpayer discounts, tax reliefs, tax bonuses, or employer tax reconciliation.

No. A tax refund is not paid automatically in the Czech Republic.

A refund is paid only if it is requested in the tax return. Without this request, the tax authority does not return the overpayment.

“If a taxpayer has an overpayment for a given tax period and wants it returned, the request must be included in the tax return.”  

— Financial Administration of the Czech Republic

A tax refund is paid within 30 days after the deadline for filing the tax return or after submitting the request.

The refund is paid only after the tax authority verifies the tax return and confirms there are no outstanding debts or issues.