Company Registration in Estonia — Step-by-Step Guide

Company registration in Estonia is today a fast and convenient process that you can complete entirely electronically. The Estonian e-Business Register allows you to set up an OÜ (private limited company) in just a few hours without visiting a notary. In this guide, we cover all the important steps — from choosing a business form to filing your first tax declarations.

1. Choosing a business form: OÜ vs sole trader (FIE)

Before registering a company, you need to decide which business form suits your activities best. In Estonia, the two most common options are a private limited company (OÜ) and a sole proprietor (FIE).

Setting up an OÜ is the sensible choice if you want to limit personal liability. With an OÜ, you are liable only up to the amount of paid-in share capital, not with all your personal assets. Since 2011, it has been possible to establish an OÜ without paying in the share capital upfront — the minimum is €2,500 but payment can be deferred. In practice, this means you can set up an OÜ with as little as €0.01 if you use the deferred payment option.

A sole proprietorship (FIE) suits smaller-scale activities where turnover remains modest and you do not need a separate legal entity. With a FIE, you are liable with all your personal assets, which is a significant risk factor. Additionally, a FIE must pay social tax monthly on at least the minimum rate, regardless of whether income is earned.

In most cases, we recommend OÜ registration to our clients because it offers better asset protection, more flexible tax planning and greater credibility in the eyes of business partners. An OÜ also makes it easier to bring in investors or sell the business in the future.

2. OÜ registration via the e-Business Register

Company registration takes place through the Estonian e-Business Register at ettevotjaportaal.rik.ee. The process is as follows:

1. Log in using an ID card, Mobile-ID or Smart-ID.
2. Choose a company name. Check name availability with a search. The name must not coincide with existing business names.
3. Select EMTAK activity codes. EMTAK is the Estonian Classification of Economic Activities. Choose your main activity and additional activities as needed. For example, for providing accounting services the EMTAK code is 69201.
4. Enter the share capital amount (minimum €2,500) and decide whether to make the payment immediately or defer it.
5. Appoint the board member(s) and submit the founding documents with a digital signature.
6. Pay the state fee (currently €265) and submit the application.

Typically, your company will be registered within 1–3 business days. After registration, you receive a registry code (8-digit number) and can open a business bank account and start operations. To open a bank account, you need to present the registration certificate, articles of association and the board member's identity document. We recommend opening the account as soon as possible, since without it you cannot issue invoices or receive payments.

3. VAT registration

If your company's turnover exceeds €40,000 in a calendar year, you are obliged to register for VAT. However, you may also register voluntarily right from the start — this is beneficial if your clients are primarily other businesses, as they can deduct input VAT.

Filing the VAT return (KMD) and the income and social tax return (TSD) is mandatory for all VAT-registered companies. The VAT return must be submitted to the Tax and Customs Board by the 20th of each month for the previous month. On it, you report both sales and purchase VAT and pay the difference to the state.

To register, submit an application in e-MTA (the Tax Board's electronic environment). Sometimes the authority requests additional documents — such as a business plan, rental agreement or evidence of actual economic activity. We recommend gathering the necessary documents before submitting the application to ensure a smooth process.

4. First tax declarations: TSD and VAT filing

After company registration, your tax obligations begin immediately. The two main declarations you will encounter monthly are the TSD and KMD.

TSD (income and social tax declaration) must be filed by the 10th of each month if you have made payments to individuals — salaries, dividends, service fees, etc. On the TSD, you declare all previous month's payments and calculated income, social and unemployment insurance taxes. Even if you have made no payments, it is good practice to submit a nil declaration.

Both TSD and VAT filing are done through the e-MTA environment. We recommend setting up reminders so that declarations are never late — delays incur interest and may damage your company's tax behaviour rating.

If company registration was completed mid-month, the first declaration period runs from the registration date to the end of the month. For example, if you registered your OÜ on 15 May, the first VAT return covers the period 15–31 May.

5. Setting up accounting from day one

Estonian accounting law requires every company to maintain proper bookkeeping from the date of registration. This means accounting must be set up immediately — not waiting until the first invoices arrive.

A professional accounting service in Tallinn helps you set everything up correctly from the start: creating a chart of accounts, establishing accounting policies, choosing software and correctly processing the first documents. Early setup prevents later problems when preparing the annual report.

It is important to choose suitable accounting software. In Estonia, common solutions include Merit Aktiva, e-arveldaja (free for small businesses) and 1C. The choice depends on your company's size, industry and needs. E-arveldaja is a good starting platform for new entrepreneurs, but companies with higher transaction volumes should invest in more capable software from the outset.

Proper accounting setup also covers document retention procedures, internal controls and digitisation of source documents. Under Estonian law, accounting source documents must be retained for at least seven years. Digital archiving is permitted but must ensure document readability throughout the retention period.

If you do not wish to handle accounting yourself, it makes sense to engage an accounting service in Tallinn that knows Estonian legislation and the tax system. This way you can focus on your core business, confident that reporting and declarations are always correct and submitted on time.

6. Summary: company registration checklist

The entire company registration process can be summarised in the following steps:

• Choose a business form (we recommend OÜ in most cases)
• Register the company in the e-Business Register and select EMTAK codes
• Open a business bank account and make the share capital payment if required
• Register for VAT if beneficial in your situation
• Set up accounting and choose software
• File your first declarations (VAT and TSD) on time
• Consider using a professional accounting service

Company registration in Estonia does not have to be complicated. With good preparation and the right support, your business can be ready to operate within a few days. If you want to learn more about OÜ registration and accounting setup, read our comprehensive guide on OÜ setup and accounting.

Need personalised advice? Contact us and we will help you complete your company registration smoothly — from name selection to your first declaration. Our accounting service in Tallinn covers the entire process, so you can focus on business.