Are E-Invoices Mandatory in Estonia in 2026?

As of July 2026, e-invoices are not generally mandatory between private companies in Estonia. Two specific rules do apply. First, public-sector buyers – state agencies, municipalities and their bodies – may only accept machine-readable e-invoices for goods and services, a rule in force since 2019. Second, since 1 July 2025 any buyer registered as an e-invoice recipient in the Estonian Business Register has the legal right to demand an e-invoice from its suppliers. That is a buyer’s right, not a general obligation on every seller. The significant change ahead: Estonia’s Ministry of Finance published a legislative intent in December 2024 to make e-invoicing mandatory for VAT-registered businesses from 2027, but as of July 2026 this remains a draft-stage plan, not adopted law.

Who can demand an e-invoice from you?

The right comes from registration, not preference. If your customer has marked itself as an e-invoice recipient in the e-Business Register, it can require invoices in machine-readable form. In practice, check a larger customer’s register status before invoicing: if there is no such registration, a PDF or paper invoice by mutual agreement remains perfectly legal.

The same 2025 amendment made the European standard EN 16931 Estonia’s primary e-invoice format, replacing the older national standard as the default. When choosing a new invoicing system, the European format is the support to check first.

When could e-invoicing become mandatory for everyone?

The Ministry of Finance proposal foresees an e-invoicing obligation for VAT payers from 2027 and estimates the wider measure package would add about €16.6 million a year in VAT revenue. It is not law yet: Estonia’s SME association EVEA has publicly opposed the plan, and both the content and the start date can change during legislative proceedings. At the EU level, the ViDA VAT reform makes structured e-invoices mandatory for cross-border B2B transactions in 2030 – the timeline is summarised in our ViDA schedule overview.

How widespread are e-invoices in Estonia today?

According to the Ministry of Finance, only about 7% of VAT-registered businesses had registered as e-invoice recipients by late 2024. That figure explains why a mandate is being considered: voluntary adoption has been slow, even though the public sector has run exclusively on e-invoices for seven years.

What should a business do in 2026?

Three practical steps cover it. Check whether your key customers are registered e-invoice recipients – if they are, expect e-invoice requests soon. Make sure your invoicing software can issue an EN 16931 compliant e-invoice. And if you are updating systems anyway, plan for the proposed 2027 mandate now: transitions are easier without a deadline at your back.