Business Hub
← All insights
Running the company

Estonian Official Letters Decoder, 10 Terms Every Business Owner Should Recognize

If you run an Estonian company from abroad, sooner or later you will receive a letter from the Commercial Register or the Tax and Customs Board.

Sulev Pikker
Sulev Pikker · Founding Partner, Business Hub
With Estonian entrepreneurs since 1991
Updated September 4, 2026 · 3 min read

If you run an Estonian company from abroad, sooner or later you will receive a letter from the Commercial Register or the Tax and Customs Board.

Most of these letters are in Estonian.

Often, the letter itself is not the problem. The problem is that the entrepreneur does not understand how urgent it really is.

The good news is that you do not need to know Estonian. It is enough to recognize a few key terms.

They will tell you within a few seconds whether it is a normal message or a situation that requires urgent action.

Before reading the letter, check three things:

No matter what official letter you receive, look for three things first.

1. Who sent the letter?

Is the sender:

  • Commercial Register;
  • Tax and Customs Board;
  • another authority?

2. What is the deadline?

Almost every official letter has a date by which you must respond.

This is the most important part of the letter.

3. Do you see any of the red-level terms below?

If so, do not leave the letter for later.

🟢 Standard message

These terms do not yet indicate a crisis, but it is worth knowing what they mean.

Annual report

Company annual report.

If you see the words “not submitted,” it means that the report is missing and the problem needs to be addressed.

Board member

Most of the time, that means you.

If the letter is addressed to a board member, it is worth reading it carefully.

Contact person

If the company needs to have a contact person in Estonia, check whether their authorization is still valid.

Käibemaks or KMKR

This usually concerns VAT returns or VAT registration.

If you see the words “not submitted,” immediately check which declaration is missing.

🟡 Warning

These terms mean that the problem has already been identified and you have time to fix it.

Net assets or equity

If there is a note in the letter that the equity does not meet the requirements, this does not mean that the company will be closed.

It means that the situation must be resolved by the specified deadline.

Warning order

An official warning from the registry. This is not yet a fine.

In most cases, this is the last chance to solve the problem without additional costs.

🔴 Act now

If any of the following terms appear in the letter, do not delay taking action.

Penalty order

The fine has already been imposed.

It is important to know that paying the fine does not eliminate the problem itself.

The reason for which the fine was imposed must be corrected.

Deletion warning

The register informs that the company may be deleted from the register.

In this case, every day often counts.

Compulsory dissolution

The company's liquidation procedure has begun.

The sooner you react, the greater the chance of resolving the situation.

Prohibition on business

The most serious concept on this list.

This concerns court-ordered restrictions on doing business and always requires thorough attention.

What do all these letters have in common?

Almost no problem arises overnight.

In most cases, the procedure proceeds in a specific order.

Notice → warning → fine → deletion warning → forced termination

The sooner you respond, the easier and cheaper it is usually to resolve the problem.

Can you handle it yourself?

Probably yes, if:

  • you can generally understand the content of the letter;
  • the problem concerns only one defect;
  • the deadline is not close.

It is worth seeking the help of an expert if:

  • you do not understand what the letter means;
  • there are several different shortcomings in the letter;
  • it is a fine order or a deletion warning;
  • the deadline is approaching.

Frequently asked questions

Why are official letters in Estonian?
The only official language of the Republic of Estonia is Estonian, therefore it is also the official language of proceedings, and most official letters are issued in this official language.
Is Google Translate enough?
This often helps to understand the general content, but it is worth being careful about the term and legal meaning.
Where do I start if I have several unopened letters?
Start with the most recent letter.

Not sure what your case needs? Ask in a free 15-minute call.