VAT registration in Czechia, step by step

You have decided to register for VAT — either voluntarily, or because your turnover crossed the statutory threshold. Registration is not one form and done. It is a sequence with several stages, and once it completes your obligations expand considerably. This article walks through the whole thing, from filing the application to your first VAT return and control statement.

Stage 1: Preparation and the decision

Before you file, be clear on two things.

Mandatory or voluntary

The type of registration decides both the timing and how much scrutiny you get:

• Mandatory registration (§ 6 of the VAT Act): turnover is measured per calendar year. Cross CZK 2,000,000 in a calendar year and you become a payer on 1 January of the following year. Cross CZK 2,536,500 and you become a payer from the day after you crossed it. Either way, the application is due within 10 working days of crossing. Example: turnover passes CZK 2,000,000 during 2026 — you file within 10 working days and become a payer on 1 January 2027.
• Voluntary registration (§ 6f): you can apply at any time. You become a payer on the effective date stated in the tax office's decision.

If you are still weighing this up, our article on when it is time to register goes through the economics, and the VAT turnover tracker shows where you stand against both thresholds.

Your tax period

A new VAT payer starts on a monthly tax period and must stay on it for the first two calendar years. You can move to quarterly periods from the third calendar year after registration at the earliest, and only if your turnover for the previous calendar year did not exceed CZK 10,000,000 (§ 99a of the VAT Act).

For most sole traders and small firms, quarterly is more comfortable once it becomes available — less filing. Monthly can be better if you regularly end up in an excess deduction position, because the state repays you sooner.

Stage 2: Filing the application

How to file

The VAT registration application must be filed electronically — this has been compulsory for VAT payers since 2015. You have two routes:

1. Via the Portál MOJE daně (mojedane.cz) — an interactive form on the Financial Administration's portal. You need a datová schránka (data box) or a recognised electronic signature.
2. Via your datová schránka — send the completed form as XML to your tax office.

The data box is not optional: if you do not have one yet, sort it out first. Since 2023 a datová schránka is set up automatically for every Czech sole trader, and all VAT correspondence with the tax office runs through electronic channels.

The form

The VAT registration application (form 25 5104) asks for:

• Identification: name, IČO (business ID), DIČ (tax ID, if you already have one from income tax), registered seat, address of your place of business.
• Reason for registration: mandatory (turnover crossed), voluntary, or another ground (identified person, VAT group).
• Business details: what you do, and your main economic activity as a CZ-NACE code.
• Bank accounts: the accounts you use for business. The tax office publishes them in the public register of VAT payers.
• Turnover: for mandatory registration, the turnover for the relevant period.
• Requested tax period: monthly (the default) or quarterly.

Supporting documents

The tax office may ask you to substantiate the application, particularly for voluntary registration. Have ready:

• A turnover summary for the calendar year (for mandatory registration).
• Copies of contracts with your main customers — used to verify that you carry on an economic activity.
• Bank statements showing the transactions actually happened.
• Issued invoices as evidence of real trading.
• A lease for your business address, if it differs from where you live.

Voluntary applications get looked at harder, because the tax office wants to rule out registrations set up for fraud. The more you put in front of them at the start, the fewer rounds of questions you get.

Stage 3: The tax office's decision

The statutory deadline for a decision is 30 days from filing (§ 130 of the Tax Code). In practice it can run longer, especially if the office comes back for more documents.

The three possible outcomes

• Registration approved: you receive a registration decision stating the date from which you are a VAT payer, and your DIČ if you did not already have one.
• Request for further information: the office asks for more documents or an explanation, with a deadline to answer.
• Registration refused: rare, and mostly on voluntary applications where the office concludes there is no real economic activity. You can appeal.

Your DIČ and the public register

You are entered in the register of VAT payers, which is public on the Financial Administration website. Your DIČ takes the form CZ + birth number for individuals, or CZ + IČO for companies. The register also publishes the bank accounts you declared — customers should pay only into an account listed there, otherwise they risk becoming liable for your unpaid VAT (§ 109 of the VAT Act).

Stage 4: What changes the day you become a payer

Invoicing

• Every invoice must carry your DIČ, and your customer's if they are a payer too.
• Invoices must show the tax base, the VAT rate and the VAT amount (§ 29 of the VAT Act).
• The correct rates: 21 % standard, 12 % reduced — the two former reduced rates of 15 % and 10 % merged into one 12 % rate in 2024.
• The DUZP (date of taxable supply) becomes a mandatory item.
• The invoice must be issued within 15 days of the taxable supply (§ 28(5)).

Records

• You must keep records for VAT purposes (§ 100 of the VAT Act) — every supply you make and every supply you receive.
• Those records have to carry everything the VAT return and the control statement need.
• Tax documents must be kept for 10 years from the end of the tax period in which the supply took place.

Your new calendar

Obligation	Frequency	Deadline
VAT return (DPHDP3)	monthly / quarterly	within 25 days of the end of the period
VAT control statement (DPHKH1)	monthly (quarterly for sole traders on quarterly periods)	within 25 days of the end of the period
EC Sales List	only for supplies to the EU, monthly	by the 25th of the following month
Paying the VAT	whenever you owe tax	by the return's filing deadline

Watch the control statement: the penalty for filing it late is automatic — CZK 1,000 if you file late on your own initiative before the tax office prompts you, CZK 10,000 if you file only within the substitute deadline after being prompted, CZK 30,000 if you do not respond to a notice to amend, complete or confirm the data, and CZK 50,000 if you do not file even within the substitute deadline. For individuals and quarterly payers the CZK 10,000, 30,000 and 50,000 penalties have been halved since 2023 — CZK 5,000, 15,000 and 25,000. The CZK 1,000 penalty is automatically not imposed once per calendar year (§ 101j of the VAT Act). For the higher penalties you can apply for a waiver on justifiable grounds under § 101k of the VAT Act. Keeping the deadline is far cheaper than arguing about it afterwards.

Stage 5: The first practical steps

1. Update your invoicing

Every invoice you issue from the effective date must show VAT. Update your templates, add your DIČ and the lines for tax base, rate and VAT amount.

2. Tell your regular clients

Let long-standing clients know the invoices are about to change. For B2B clients who are VAT payers, the effective price does not move — they deduct the VAT. For consumers and non-payers the price goes up by the VAT, unless you decide to absorb it by reducing your base price.

3. Set up your records

From day one of registration you have to record everything. You need a system for:

• Invoices issued (supplies made)
• Invoices received (supplies received — the basis for your deduction)
• Everything else: reverse charge, imports, services bought from abroad

4. Prepare the pre-registration deduction

Under § 79 of the VAT Act you can claim VAT on assets acquired no more than 12 months before registration, provided those assets are still part of your business property on the registration date — typically equipment, tools or stock. You claim it in your first VAT return, so gather the documents now.

5. Check your contract prices

Go through existing contracts and check whether the agreed prices are stated with or without VAT. This is the single most common source of argument in the first months. Unless you agree otherwise with the client, as a payer you now invoice the price plus VAT.

Stage 6: Your first VAT return

The first return covers the period from your registration date to the end of that tax period. Become a payer on 1 May 2026 and your first return is for May 2026, due by 25 June 2026.

What goes in it

• Supplies made: every invoice issued from the registration date (output VAT).
• Supplies received: every invoice received with VAT from the registration date, plus the § 79 deduction for assets bought before registration (input VAT).
• The result: either tax to pay, or an excess deduction the state refunds to you.

Expect an excess deduction — and questions about it

It is common to end up in an excess deduction in the first months, especially when you claim the § 79 deduction. The tax office may open a procedure to remove doubts (§ 89 of the Tax Code) and ask you to prove the deduction was justified. Have every tax document and supporting paper ready before you file, not after the letter arrives.

This is where having invoicing and records in one place pays for itself: issuing invoices with the base, rate and VAT amount, pulling the customer's DIČ from the ARES register instead of retyping it, and generating the XML for the VAT return (DPHDP3) and the control statement (DPHKH1) ready to submit through the Portál MOJE daně. Our walkthrough of the XML export and submission covers that step in detail.

Registration checklist

1. Decide: mandatory (turnover crossed) or voluntary (because the numbers work).
2. Data box: confirm yours is active.
3. Application: file electronically through MOJE daně or your data box — within 10 working days of crossing the threshold if it is mandatory.
4. Documents: turnover summary, contracts, bank statements, issued invoices.
5. Decision: allow up to 30 days, and answer any follow-up promptly.
6. Invoicing: add VAT to your templates, add your DIČ, tell your clients.
7. Records: set up VAT records for supplies received and made.
8. § 79 deduction: claim it for pre-registration assets in the first return.
9. First return and control statement: file by the 25th of the month following your first tax period.
10. Then keep it up: returns, control statements, payments, every period.

Registration is a real milestone. It brings obligations, but also the input VAT deduction and an easier position with B2B clients. The transition goes smoothly when the groundwork is done: data box sorted, documents ready for the tax office, and every supply received and made recorded from the first day. Your first return is then a matter of checking the numbers rather than assembling them.

Official sources

• § 6, § 6f and § 79 of Act No. 235/2004 Coll., on VAT
• Financial Administration of the Czech Republic — changes to VAT payer status from 1 January 2025

Taxorio scope: Taxorio provides invoicing and income/expense records for Czech sole traders. It is not full accounting or personalised tax advice. For an unsupported or unusual case, verify the treatment with a Czech accountant or tax adviser before filing.