VAT Registration for Estonian e-Resident Companies
When VAT registration is required, and how the process actually works.
VAT registration is one of the more misunderstood compliance areas for e-resident founders, partly because a lot of common business activity simply doesn't trigger it, and partly because a significant rule change in August 2025 means that what was previously a routine path to an EU VAT number now requires demonstrating genuine economic substance in Estonia first. This guide explains when registration is mandatory, when it makes sense voluntarily, how the OSS scheme changes the picture for digital businesses, and what the 2025 change actually means for e-resident companies.
When registration is mandatory
An Estonian company is required to register for VAT once its taxable turnover reaches €40,000 within a calendar year. Critically, once you hit that threshold, you have only three days to submit your registration application. Waiting until after you cross the threshold is the wrong approach. By the time you realize it has happened, you may already be late. Registering voluntarily before you expect to reach the limit is significantly less stressful.
This is where many founders miscalculate. Only turnover where Estonia is the place of supply under EU VAT rules counts toward the €40,000 threshold. B2B services invoiced to foreign VAT-registered companies typically do not count, because the place of supply is the customer's country and the reverse charge mechanism applies. Digital services to EU consumers sold via the OSS scheme also do not count toward the Estonian threshold. If your entire revenue is B2B to non-Estonian clients, you may never trigger mandatory Estonian VAT registration regardless of turnover.
The August 2025 substance change
This is the piece most current guides have not yet caught up with. In August 2025, Estonia tightened its approach to VAT registration approvals, making them explicitly dependent on whether the company has real economic activity in Estonia. Before this change, many remote founders used Estonian OÜ registration as a convenient path to an EU VAT number regardless of where their actual business was happening. That path has narrowed.
In practice, voluntary VAT registration can now only be granted when a genuine connection to Estonia is clearly demonstrated. Companies whose transactions are all taxable in other countries may be told by EMTA that their VAT and OSS registration should be done in the country where they actually operate, not in Estonia. For e-commerce sellers and digital service providers who had relied on Estonia for EU VAT access, this is a material change worth assessing before applying.
Voluntary registration: when it makes sense
Registering before you reach the threshold can make financial sense depending on your business model:
- If your company pays significant VAT on business purchases (software subscriptions, equipment, services from VAT-registered suppliers), registration lets you reclaim that input VAT
- If your clients are other VAT-registered businesses, adding VAT to your invoices doesn't hurt them since they reclaim it anyway, and you gain the input VAT recovery benefit
- If your clients are end consumers (B2C), registration makes your prices effectively higher by the VAT amount, which can be a competitive disadvantage
The calculation depends on your specific input and output VAT flows. An accountant can model this for your situation quickly once they know your client mix and your purchase categories.
OSS and IOSS: what they change for digital businesses
The One-Stop Shop (OSS) scheme is relevant for any Estonian OÜ selling digital services or goods directly to consumers in other EU member states. Instead of registering for VAT separately in every EU country where you have B2C customers (which was the old rule), OSS lets you declare and pay all of that VAT through a single return filed in Estonia, using the VAT rates of each consumer's country.
| Scheme | What it covers | Return frequency |
|---|---|---|
| OSS (One-Stop Shop) | Digital services and goods sold B2C to EU consumers | Quarterly, due by end of month following the quarter |
| IOSS (Import One-Stop Shop) | Goods imported from outside EU, sold B2C to EU consumers, value up to €150 | Monthly, due by end of month following the month |
The OSS threshold for the EU as a whole is €10,000. Below that, you can apply the VAT rules of your home country (Estonia) for all EU B2C sales. Above it, OSS is the practical mechanism to avoid registering in every customer country individually. Given the substance change described above, whether your Estonian company can use Estonia as the OSS Member State of Identification is no longer automatic: it depends on whether Estonia is genuinely your country of establishment for VAT purposes.
VAT rates in 2026
| Rate | Applies to |
|---|---|
| 24% (standard) | Most goods and services, permanently raised from 22% in July 2025 |
| 13% | Accommodation services (including with breakfast) |
| 9% | Books, educational materials, newspapers, medicines, medical devices, certain hygiene products |
| 0% | Exports, intra-EU supplies under certain conditions |
Filing obligations once registered
Once VAT-registered, a company must file a monthly VAT return (KMD) through the e-MTA portal by the 20th of the following month, even in months with no taxable activity. A nil return is still required. Missing a return can result in penalties of up to €2,000 per return, and late registration can result in penalties of up to €3,200.
Frequently asked questions
I invoice only B2B clients outside Estonia. Do I need to register for VAT?
Probably not for mandatory registration, since the place of supply for most B2B services is the customer's country, and those transactions don't count toward the Estonian €40,000 threshold. You may still want to register voluntarily to recover input VAT on your business purchases, if that's financially beneficial for your cost structure. Confirm your specific service type with your accountant, since certain service categories have different place-of-supply rules.
Can I get an EU VAT number through my Estonian OÜ?
Since August 2025, this depends on whether you can demonstrate genuine economic activity in Estonia. If your company has real Estonian connections (local clients, suppliers, employees, or management activity based in Estonia or the EU), registration is straightforward. If the company is operated entirely remotely with no Estonian economic footprint, EMTA may decline registration and direct you to register in the country where you actually operate.
Does voluntary registration make sense if I have no Estonian clients?
It depends on your input VAT. If you pay VAT on significant business purchases from Estonian or EU suppliers, the ability to reclaim that input VAT can outweigh the administrative overhead. If your purchases are mainly from outside the EU with no VAT, the benefit is smaller. Get your accountant to model the net position for your specific cost structure before deciding.