The VAT control statement (kontrolní hlášení) is one of the routine obligations that in Czechia concern VAT payers only. It is not a VAT return nor a recapitulative statement — it is a separate electronic report in which the tax authority matches invoices received and issued between companies, revealing chains where one party declared the tax and another deducted it. For an honest business it is routine; it causes trouble mainly when it is forgotten or when the reply to a challenge comes late.

If you are still weighing up whether to become a VAT payer at all, it pays to first understand when the registration obligation arises and what the rates are. Until you are a payer, the control statement does not concern you in the slightest. Once you are, it becomes a monthly or quarterly routine.

Who files the control statement — and who does not

Every VAT payer registered in Czechia who, in the given period, made a taxable supply with the place of supply in the country, or received a supply and claims a deduction on it, must file a control statement. For a group of connected persons the representative member files it. What matters, then, is the actual movement of supplies, not registration as such.

Conversely, the statement is not filed by anyone who is not a payer — neither non-payers nor so-called identified persons, who pay VAT only on certain cross-border services. It is also not filed for a period in which the payer had no relevant supply, and it need not be filed by someone who makes only supplies exempt without the right to deduct (for example letting of property, financial or educational services).

Deadlines depend on who you are

Here is one detail that surprises many a director. A legal entity always files the control statement monthly, within 25 days of the end of the calendar month — even when its VAT return is only quarterly. The monthly rhythm of the statement thus applies to every s.r.o. regardless of its tax period.

A natural person has it tied to their return: they file the control statement within the same deadline as the VAT return — monthly if they are a monthly payer, or quarterly if quarterly. The 25-day deadline is identical to that for the return itself, so both obligations run at once. For an overview of the other deadlines, see our article on tax-return deadlines and obligations.

The statement is strictly electronic

The control statement is filed electronically only, in the prescribed format and structure. In practice you send it through a data box or the tax portal (EPO) with a login or a recognised signature — a paper form is not possible and a statement filed any other way counts as not filed. That is exactly why a working data box is practically essential for a VAT payer; how it works and what obligations it brings is something we cover in our piece on the data box for businesses.

Penalties — and when you can avoid them

The penalties for the control statement are fixed by law and the tax authority imposes them almost automatically. If you file the statement late, but on your own and without being prompted, the fine is CZK 1,000. If you file it only within a substitute deadline after a challenge, it is CZK 10,000; failing to respond to a challenge to change or supplement data risks CZK 30,000, and failing to file at all even within the substitute deadline costs CZK 50,000.

Two things soften this. First, the three higher fines (10, 30 and 50 thousand) are halved for natural persons, quarterly payers and for an s.r.o. with a single member who is a natural person. Second, the first late filing in a calendar year that you manage without a challenge stays free of the CZK 1,000 fine — the law thus tolerates one slip a year. Beyond that, the tax authority may still impose a fine of up to CZK 50,000 for obstructing tax administration and up to CZK 500,000 in the most serious cases, though these are exceptional.

Setting up the control statement correctly and responding to the tax authority's challenges in time is something the accounting firm Wellbens can help with.

The challenge and how to respond to it

When the tax authority hits a discrepancy while matching invoices, it sends a challenge to change, supplement or confirm the data. You need to react quickly: the deadline is 5 working days from notification of the challenge, and if it arrives in your data box you have 17 days from the day it was delivered to reply. Missing this particular deadline is the most common reason for high fines.

Example: if a challenge lands in your data box on 6 October, you must file the follow-up control statement by 23 October at the latest. If you respond to the challenge in time and fix the error, no fine for the supplement arises — which is exactly why it pays to watch the box and keep your documents in order, just as in a well-run house for just thirty companies.

Conclusion

The control statement is a routine but unforgiving obligation of every VAT payer. Legal entities file it monthly by the 25th, natural persons according to their tax period, and always electronically only. Fines start at CZK 1,000 and climb quickly when challenges are ignored — though halved rates and one tolerated slip a year ease the picture. The key to peace of mind is to watch your data box and respond to challenges within 5 working days, or 17 days when delivered to the box.

Frequently asked questions

Who must file the VAT control statement?

It is filed by every VAT payer registered in Czechia who, in the given period, made a taxable supply with the place of supply in the country or claims a deduction on a received supply. Non-payers and identified persons do not file it. It is also not filed for a period in which the payer had no relevant supply. For a group of connected persons the representative member files it.

By when must the control statement be filed?

A legal entity always files it monthly, within 25 days of the end of the calendar month, even when its VAT return is only quarterly. A natural person files it within the same deadline as their return — monthly or quarterly. The 25-day deadline is identical to that for the VAT return, so both obligations run at once. It is filed electronically only.

What fines apply and can they be reduced?

The fines are CZK 1,000 for a late filing without a challenge, CZK 10,000 after a challenge within a substitute deadline, CZK 30,000 for not responding to a challenge and CZK 50,000 for not filing at all. For natural persons, quarterly payers and single-member s.r.o. companies the three higher fines are halved. The first late filing in a year without a challenge is also free of the CZK 1,000 fine. In extreme cases the tax authority can impose up to CZK 500,000.