E-Residency Association Estonia: A Clear 2026 Step-by-Step Guide Guide
This 2026 guide explains the e-Residency association Estonia process and how to link your Estonian ID code to your existing company in the e-Business Register.
If your company’s data in the Estonian Business Register is still tied to a foreign personal code or date of birth, your company may not appear in the “My undertakings” list after you log in with your e-Residency card or Smart-ID. This guide explains how to complete the e-Residency association in Estonia by linking your Estonian personal ID code to your existing company in the e-Business Portal.
When do you need to link your ID code?
You usually need to complete the e-Residency association when:
- Your company was registered using a foreign personal code or only a date of birth.
- You now have an Estonian personal ID code via e-Residency.
- After logging in to the e-Business Portal, your company does not appear under “My undertakings”.
In this situation, your ID code must be added to the company’s data so the system can connect you as a board member or shareholder.
What you need before you start
- Access to the e-Business Portal with your e-Residency card or Smart-ID.
- Your company’s registry code or exact name.
- Your Estonian personal ID code (isikukood).
- A digitally signed free-form letter if the registrar requires additional explanation.
Step-by-Step Guide for E-Residency Association in Estonia
Step 1: Log in to the e-Business Portal
Go to the e-Business Portal and log in using your e-Residency card or Smart-ID. After successful authentication, open the Dashboard.
Step 2: Search for your company
If your company is not listed under My undertakings:
- Click “Search for a legal person” in the dashboard.
- Enter your company’s name or registry code.
- Click the company name in the search results to open its profile.
Step 3: Start changing the company data
- On the company page, choose “Change the data” to open the amendment application.
Step 4: Update your personal identification number
- Go to the “Persons” section of the application.
- Find your name in the list of board members or shareholders.
- Click “Change” next to your name.
- Set the country of your personal identification number to Estonia.
- Replace the foreign personal code or date of birth with your Estonian personal ID code.
Step 5: Add supporting documentation (if needed)
- Open the “Documents” section.
- Upload a digitally signed free-form letter that:
- Explains that you are linking your Estonian ID code to an existing board member / shareholder.
- Includes your full name, company name and registry code.
- Confirms that no other structural changes are made.
- Select “Resolution of the Body” (or similar appropriate type) for the uploaded document.
Step 6: Confirm and submit the application
- Carefully review all data in the application.
- Digitally sign the application by clicking “Sign”.
- Verify that no state fee is required for this change (updating the personal ID code is usually free).
- Click “Submit application” to send it to the registrar.
Step 7: Wait for registrar approval
The registrar typically processes applications within 1–5 working days. Once approved, your company will appear under “My undertakings” and your e-Residency association will be fully active.
Why linking your ID code matters
Completing the e-Residency association and linking your Estonian ID code to your company is important because it:
- Allows you to manage the company directly in the e-Business Portal.
- Ensures compliance with Estonian corporate and registry rules.
- Makes it easier to file annual reports and update company details.
- Prevents access issues when board members change or new e-Residents join the company.
Important notes
- Free of charge: Updating your personal identification number is normally free. If a state fee appears, double-check that it applies to your case.
- Accuracy matters: Any mistakes in names, ID codes or roles can delay approval.
- Processing time: Standard processing is 1–5 working days, but it can be longer during busy periods.
What to do if you encounter issues
If you run into problems while completing the e-Residency association in Estonia, you can:
- Use the official help materials in the e-Business Portal Help Section.
- Contact the Estonian Business Register support team using the details on their official contact page.
If you also need a legal address and contact person in Estonia after completing the association, you can review our service here: Legal Address & Contact Person – 1 Year Package.