Do You Have to Send E-Invoices in Estonia in 2026?

No — Estonian small businesses don't have a blank e-invoice requirement in 2026. Under the amendment to Section 7¹ of the Estonian Accounting Act that took effect on 1 July 2025, a seller can only be required to send an e-invoice, meaning a structured, machine-readable digital invoice rather than a plain PDF, to a client who has actually registered himself as an e-invoice recipient in the e-Business Register. If your client isn't listed there, whatever invoice format you've already agreed on is fine, PDF by email included. According to guidance from the Ministry of Finance, this “buyer decides” principle applies equally to private and public-sector clients. Public bodies, though, are already registered as e-invoice recipients across the board, so for them the older practice continues largely as before.

When can a client actually require an e-invoice?

A private-sector client only has the right to demand an e-invoice if it has registered itself in the e-Business Register as an e-invoice recipient. That entry is public, and it's worth checking before you draw up an invoice, because it also tells you which receiving channel the client uses. Under Section 7¹(7) of the same law, an e-invoice counts as compliant if it meets the European e-invoicing standard EN 16931-1, the shared machine-readability standard that Peppol invoicing is built on, but the two parties are free to agree on a different standard instead, such as the local Estonian e-invoice format. If your client isn't in the register, it simply has no legal basis to insist on an e-invoice, and you can carry on with a normal invoice, including a PDF sent by email.

What's the difference between a PDF invoice and public-sector e-invoicing?

Because every public-sector body is already listed in the e-Business Register as a registered e-invoice recipient, the earlier e-invoicing regime continues for them essentially unchanged. The one thing that's changed is that, since 1 July 2025, these institutions are now allowed to accept a different invoice format when it suits them, whereas before that wasn't permitted. It's worth keeping the distinction clear: a machine-readable e-invoice is not the same thing as an ordinary PDF invoice, which is essentially just a picture of an invoice and can't be read automatically into the buyer's accounting system. Emailing a PDF doesn't turn it into an e-invoice just because the client happens to be a large company. The format is set by the underlying standard, not by how the file arrives.

Does turnover or VAT liability affect the e-invoice obligation?

Your company's turnover, VAT liability or number of employees has no bearing on whether you must send e-invoices, because the law sets no separate threshold for that. What causes confusion is the €1,000 threshold in the VAT return annex, known as KMD INF. That threshold determines which invoices you need to report per counterparty in a given tax period on your VAT return annex. It has nothing to do with what format the invoice itself must take.

What's planned for 2027 and 2030?

The The Ministry of Finance has proposed a general e-invoice obligation for VAT-registered businesses and the removal of the €1,000 KMD INF threshold, naming 2027 as a possible effective date. That's still a policy intent under development, not a law currently in force, and it shouldn't be treated as an already-binding deadline. The one date that is certain comes from Council Directive (EU) 2025/516: from 1 July 2030, e-invoicing becomes mandatory for cross-border B2B transactions within the EU. That rule does not extend to invoices issued between Estonian businesses domestically.

FAQ

Will there be a general obligation for small businesses in Estonia to send e-invoices in 2026?

No. A general obligation to send e-invoices will not be imposed on Estonian small businesses in 2026, because the buyer's registration in the e-Business Register, not the company's turnover or the KMD INF limit, will decide.

When can a private (private sector) customer request an e-invoice in 2026?

A private sector customer may only request an e-invoice if they are registered as an e-invoice recipient in the e-Business Register. If the customer is not registered, they have no legal basis to request an e-invoice and may use the agreed invoice form.

Does the KMD INF 1000-euro limit affect the e-invoice obligation?

No impact. The KMD INF 1,000 euro limit concerns which invoices must be declared in the appendix to the VAT return per transaction partner, not the form in which the invoice should be issued.

What will change in e-invoicing in the EU by 2030?

From July 1, 2030, e-invoices will become mandatory for cross-border B2B transactions in the EU. This rule does not apply to invoices within Estonia.