- Every Estonian OÜ must file an annual report by 30 June each year, regardless of activity. There is no exemption for dormant or inactive companies.
- Estonia does not tax retained profits. Corporate income tax applies only when profits are distributed, at a rate of 22/78 of the net dividend. The previous 14/86 lower rate was abolished from 1 January 2025.
- The standard VAT rate is 24% from 1 July 2025. VAT returns (KMD) are due by the 20th of the following month, including nil returns for months with no transactions.
- EMTA charges 0.06% per day interest on late payments with no grace period, equal to 21.9% annualised, the most expensive creditor an Estonian company can have.
Professional accounting services in Estonia cover more than the annual report. They span the complete cycle of financial obligations that an Estonian OÜ carries from registration: monthly financial records, periodic EMTA declarations, VAT compliance, payroll processing where applicable, and the statutory annual report that every company must file regardless of activity level. This article sets out what those obligations are, what each deadline involves, and what to look for when choosing an Estonian accounting firm to manage them.
What professional accounting services in Estonia cover, obligation by obligation
The Estonian Accounting Act (Raamatupidamise seadus) requires every company registered in the Commercial Register to maintain accounting records that accurately reflect all transactions from the date of registration. The obligation begins at incorporation, not at first revenue. A company with zero activity in a given year still has an annual report obligation. A VAT-registered company with zero transactions in a given month still has a nil VAT return obligation. A qualified Estonian accounting firm manages all of the following on behalf of its clients.
All transactions must be recorded in the accounting system in the month they occur, based on source documents: sales invoices issued, purchase invoices received, bank statements, payroll records, and any other documents evidencing a financial transaction. Records cannot be reconstructed in bulk at year-end without significant additional cost and increased risk of inaccuracy in the annual report.
Since 2022, annual reports must be submitted in XBRL format using the current et-gaap taxonomy. This technical requirement creates a direct dependency on accounting software and qualified professional preparation. A company whose monthly records are maintained correctly throughout the year produces an annual report as a byproduct of that process. A company that attempts to reconstruct twelve months of transactions in May for a June deadline produces an annual report as an exercise in recovery.
The TSD declaration covers income tax, social tax, unemployment insurance premiums, and contributions to mandatory funded pension. It is submitted by the 10th day of the month following the month in which the relevant payment was made. This obligation arises when the company pays salaries to employees or management board members, management fees to natural persons, or dividends to individual shareholders. A company that makes none of these payments in a given month does not file TSD for that month.
Estonia's corporate income tax structure means that dividend distributions trigger a tax event at the company level. When an Estonian OÜ pays a dividend to a natural person shareholder, the company declares and pays corporate income tax at 22/78 of the net payout through the TSD, by the 10th of the following month. The 14/86 lower rate for regularly distributed dividends was abolished from 1 January 2025. The rate for all dividend distributions from 2025 onwards is 22/78.
From 1 October 2026, the submission of declaration form TSD will become data-based.This means TSD declarations will no longer be entered manually or uploaded as generic XML files through e-MTA. They will be generated directly from compatible accounting software through a structured data connection.
For companies whose accounting is managed by a professional firm using EMTA-compatible software, this transition is handled without any action required from the company owner. For companies managing their own accounting through non-compatible tools, this represents a compliance risk that must be resolved before the October deadline. 1Office Estonia's accounting platform is already compatible with the data-based TSD submission format.
A VAT-registered Estonian OÜ must submit a VAT return (KMD) to EMTA by the 20th of each month, covering the previous month's transactions. This obligation applies to every month without exception, including months with zero taxable transactions. A nil KMD return must still be filed. Failure to file a nil return is treated as a late filing and triggers a minimum fine of EUR 200, the same as a substantive late return.
The standard Estonian VAT rate is 24% from 1 July 2025, increased from 22%. Companies with transactions spanning the rate change date need to apply both rates correctly in their records, as the applicable rate is determined by the invoice date. Reduced rates remain at 13% for certain categories and 5% for books and periodicals. The VAT registration threshold in Estonia is EUR 40,000 of annual taxable turnover, after which registration becomes mandatory.
The annual report deadline is set at six months after the fiscal year-end under the Estonian Accounting Act. Most Estonian OÜs use the calendar year, making 30 June the operative date each year. Dormant and holding OÜs must still file: zero activity is not a filing exemption, and missed zero reports account for most compulsory-deletion cases.
The annual report must be prepared in accordance with Estonian accounting standards and filed in XBRL format through the Business Register's online environment. For micro-companies (total assets under EUR 175,000, turnover under EUR 350,000, average under 10 employees), simplified reporting requirements apply. Most internationally-owned OÜs with digital or service-based activity fall within the micro category.
Missing the 30 June deadline triggers Äriregister enforcement proceedings. Directors of companies with overdue reports are flagged on the liability register, which banks and financial institutions consult during account opening and credit assessments.
Every deadline an Estonian OÜ carries, and the cost of missing each one
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10th monthlyTSD declaration (if applicable) Filed when salary, management fees, or dividends were paid in the previous month. From 1 October 2026, data-based submission replaces manual entry.
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20th monthlyKMD: VAT return (if VAT-registered) Monthly VAT return covering all supplies and input VAT. Nil returns required even in zero-transaction months. Minimum fine EUR 200 for late or missing filing.
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30 AprilIncome tax return for individuals Applies to natural persons (directors, shareholders) rather than the company itself, but involves data produced from the company's accounting records.
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30 JuneAnnual report to Business Register Mandatory for all companies regardless of activity. XBRL format. Missing this deadline triggers enforcement. Interest on late taxes: 0.06% per day from day one.
EMTA charges interest at 0.06% per day on late tax payments with no grace period. This equals 21.9% annualised, higher than most commercial credit facilities. EUR 10,000 of unpaid VAT left for one year generates EUR 2,190 in interest alone. There is no automatic warning before interest begins. The interest runs from the first day after the deadline, regardless of whether the company has received any correspondence from EMTA.
Corporate income tax, VAT, and what makes Estonia's tax model structurally different
Estonia does not issue a year-end tax bill. A taxable event occurs only when funds leave the company for the benefit of shareholders, in the form of dividends or profit-equivalent distributions. Until distributed, earnings may accrue indefinitely within the company completely free of corporate income tax. This structure makes Estonia genuinely distinct from every other EU member state on corporate income tax, and it is the most frequently misunderstood aspect of Estonian taxation by international founders incorporating here for the first time.
The practical implication is that an Estonian OÜ that retains its profits, reinvests in operations, or accumulates cash for future distribution pays zero corporate income tax on those profits until the moment of distribution. When distribution occurs, corporate income tax at 22/78 of the net dividend applies and is declared and paid through TSD by the 10th of the following month. The tax is paid by the company, not the individual shareholder, and for Estonian tax-resident individual shareholders, the dividend received is not subject to a second layer of personal income tax.
The zero corporate income tax on retained profits is a structural feature of Estonian company law, not a planning strategy. It applies automatically to every Estonian OÜ that does not distribute profits. What requires active professional management is everything else: the monthly EMTA declarations, the VAT compliance, the annual report, and the correct handling of the distribution event when it occurs.
A professional Estonian accounting firm does not primarily add value by exploiting the CIT structure. It adds value by ensuring that the declarations surrounding distributions are filed correctly and on time, that the VAT position is accurate, that the annual report reflects the true financial position of the company, and that EMTA's increasingly data-based filing requirements are met through compatible systems. The zero CIT benefit is built into Estonian law. Whether your company actually realises it without compliance errors depends entirely on the quality of the accounting behind it.
The quality markers that distinguish professional Estonian accounting services
Estonia has approximately 6,000 accounting service providers. The quality of service varies substantially across that range. The following markers are publicly verifiable and provide an objective basis for assessing an accounting firm before engaging one.
ERK accreditation
The Eesti Raamatupidajate Kogu quality mark is held by fewer than 25 of Estonia's approximately 6,000 accounting companies. Requires an independent audit, professional liability insurance of at least EUR 25,000, AML compliance, and financial stability. Verifiable at erk.ee.
Level 5 or Level 6 certified accountants
Professional certification requires examination through the Estonian Qualifications Authority. Level 6 (Senior Accountant) requires a bachelor's degree, two years of experience, and an examination covering financial accounting, management accounting, and tax. Verifiable at kutseregister.ee.
Compatible software for data-based TSD
From 1 October 2026, TSD submission is data-based. An accounting firm whose software is not compatible with EMTA's data-based format creates a compliance risk for its clients. Confirm compatibility before October 2026.
English-language service for international clients
Most Estonian accounting firms work primarily in Estonian. For international founders and e-residents managing their OÜ remotely, a firm that communicates in English and operates a client-facing dashboard in English is a practical necessity rather than a preference.
What 1Office Estonia provides
Monthly accounting and tax declarations
Monthly financial records, TSD and KMD declarations, EMTA correspondence, and payroll processing where applicable. Data-based TSD compatible from October 2026.
Annual report preparation and filing
XBRL-format annual report prepared from monthly records and filed with the Business Register before 30 June. Dormant company reports from a simplified fixed fee.
VAT registration and compliance
VAT registration with EMTA, monthly KMD returns, and VAT deregistration. Rate of 24% correctly applied from July 2025 across all client accounts.
Tax advisory for foreign-owned OÜs
Guidance on dividend distribution planning, TSD obligations, beneficial owner compliance, and the interaction between Estonian and home-country tax rules.
Frequently asked questions about accounting services in Estonia
What accounting services does an Estonian OÜ need?
An Estonian OÜ requires monthly financial records under the Accounting Act, VAT returns by the 20th if VAT-registered, TSD declarations by the 10th when salary or distributions are paid, and an annual report filed with the Business Register by 30 June each year. A professional Estonian accounting firm manages all of these obligations, including EMTA portal filing and XBRL report preparation.
What is the deadline for the Estonian annual report?
The annual report for a calendar-year Estonian company must be filed with the Business Register by 30 June. The deadline is set by the Estonian Accounting Act and applies equally to active and dormant companies. Missing it triggers enforcement proceedings and directors are flagged on the liability register.
What is the corporate income tax rate in Estonia in 2026?
Estonia does not tax retained profits. Corporate income tax of 22/78 applies only when profits are distributed as dividends. On a EUR 78 net dividend, the company pays EUR 22 in corporate income tax, totalling EUR 100 gross. The previous lower rate of 14/86 for regular dividends was abolished from 1 January 2025.
What is the Estonian VAT rate in 2026?
The standard Estonian VAT rate is 24% from 1 July 2025. Reduced rates are 13% and 5% for specified categories. The registration threshold is EUR 40,000 annual taxable turnover. VAT returns are due by the 20th monthly, including nil returns for months with no transactions.
What is the TSD declaration and what changes in October 2026?
TSD is EMTA's declaration covering income tax, social tax, and related contributions on salary, management fees, and dividend distributions. It is filed by the 10th of the following month when applicable. From 1 October 2026, TSD submission becomes data-based, requiring compatible accounting software. Companies whose accounting is managed by a compatible professional firm are unaffected.
How do I choose an Estonian accounting firm?
Key verifiable quality markers are ERK accreditation (held by fewer than 25 of Estonia's approximately 6,000 accounting firms, verifiable at erk.ee), certified accountants at Level 5 or Level 6 (verifiable at kutseregister.ee), compatibility with EMTA's October 2026 data-based TSD requirements, and English-language service for international founders managing their OÜ remotely.
Estonian accounting services for local and international companies.
1Office Estonia is ERK-accredited, with Level 6 certified accountants and full EMTA compliance including data-based TSD from October 2026. All services in English.
About this article
Written and reviewed by the 1Office Estonia accounting team. All EMTA deadlines, tax rates, VAT obligations, and regulatory requirements are verified against EMTA's official guidance at emta.ee and the Estonian Business Register at ariregister.rik.ee, as of September 2026.
Published September 2026 · 1Office Estonia · Narva mnt 5, 10117 Tallinn · [email protected]
Sources: EMTA (Estonian Tax and Customs Board), TSD declaration guidance and October 2026 data-based submission announcement (emta.ee, verified September 2026); EMTA, Tax rates 2026 (emta.ee/en/private-client/taxes-and-payment/declaration-income/tax-rates); Estonian Accounting Act (Raamatupidamise seadus), annual report obligations; Estonian Commercial Code (Äriseadustik), Business Register filing requirements; ERK accreditation register (erk.ee); Estonian Qualifications Authority, professional certification register (kutseregister.ee).
