VAT registration becomes mandatory when your company’s taxable turnover in Estonia exceeds €40,000 in a calendar year. Once you cross this threshold, you have three business days to register. Your VAT obligation starts from the moment your turnover reaches €40,000, not from the date you register.

The standard Estonian VAT rate is 24% from 1 July 2025. This is a permanent change from the previous 22% rate. It applies to all VAT-registered companies selling to Estonian residents and non-VAT-registered EU clients.

The reverse charge mechanism shifts the VAT accounting obligation from the seller to the buyer. When you invoice a VAT-registered business in another EU country for services, you do not charge VAT. Your client self-accounts for VAT at their local rate. You must include both VAT numbers on the invoice and a reference to the reverse charge. This applies to most B2B cross-border service invoices within the EU.

For B2B services to business clients outside the EU, the place of supply is generally the client’s country, meaning the service falls outside the scope of Estonian VAT. This is the most straightforward VAT situation for Estonian companies. The exact treatment depends on the nature of the services, so it is worth confirming with your accountant for your specific case.

OSS (One Stop Shop) is an EU scheme that allows companies selling digital services to consumers in multiple EU countries to file one monthly VAT declaration through EMTA covering all EU countries, instead of registering in each country separately. If you sell digital services B2C across more than one EU country, OSS is the correct solution. Unicount can handle OSS registration and monthly filing for a fee.

IOSS (Import One Stop Shop) applies to distance sales of low-value goods with a value below €150 imported into the EU from non-EU countries. If you sell physical goods to EU consumers from outside the EU, IOSS allows you to charge and remit VAT at the point of sale rather than at the border. Unicount can assist with IOSS registration for a fee.

A KMD (käibemaksudeklaratsioon) is Estonia’s monthly VAT return. It must be submitted to EMTA by the 20th of the following month. It is required for every VAT-registered company regardless of whether you had any VAT-relevant transactions that month. Failing to file on time triggers an automatic penalty notice from EMTA.

The five most common mistakes: missing the €40,000 threshold because turnover was not tracked regularly; failing to apply the reverse charge correctly on EU B2B invoices; not registering for OSS when selling digital services B2C to EU consumers; missing the KMD deadline in a month with no activity; and assuming that a VAT number obtained in another country removes Estonian VAT obligations.

If your taxable turnover exceeds €40,000 and you fail to register within three business days, EMTA can assess VAT retroactively from the date the threshold was crossed and apply interest and penalties on the unpaid amount. It is always better to register promptly and proactively. If you realise you have already crossed the threshold, contact Unicount or EMTA immediately.