What you’ll learn in this article

• What “initiation of tax proceedings” means under Czech law

• Types of proceedings the tax office may initiate

• How to recognize that proceedings have officially started

• Why timing is crucial for legal deadlines

• When and why to seek legal help immediately

When are tax proceedings considered initiated?

Under Section 92 of the Tax Code, tax proceedings can begin in two ways:

• Based on your own filing (e.g., tax return), or

• Ex officio – initiated by the tax authority itself.

This means tax proceedings may be running without you knowing it – for instance, when the tax office silently starts reviewing your tax return.

In more serious cases (e.g., reassessments or inspections), the initiation becomes visible: you’ll receive an official notice or decision. From that moment on, your deadlines start running.

Why does the moment of initiation matter?

It’s a legal milestone that affects your rights:

• You are now required to respond within statutory deadlines

• You must cooperate – but only within legal limits

• If you fail to respond in time, you may lose key defenses

• The tax authority is now allowed to issue binding decisions

Example: If you receive a request to prove a tax deduction and don’t reply, they may assume your claim was invalid – and reassess your tax accordingly.

Common mistakes people make

• They don’t clarify what kind of proceedings it is.

• They reply informally, e.g., by phone.

• They share too much information without legal advice.

• They wait too long before seeking help.

Recommendation from the lawyer

If you receive any letter titled “Notice of initiation of proceedings”, don’t ignore it – even if you believe everything is in order. Tax proceedings are formal legal processes, and minor mistakes can cost you thousands.

📌 Always verify what the authority is investigating and whether you are legally required to respond.