Equity & Shareholder Structure for Estonian Start-ups

Section 1 – OÜ Share Structure: The Legal Foundation

How shares work in an Estonian private limited company before any external investors

Shares in an OÜ vs a Public Company

An Estonian OÜ (osaühing) issues participations – called osad in Estonian – rather than the freely transferable shares of a public company. Each participation represents a fractional ownership in the company. Unless the articles of association prescribe a different procedure, an OÜ shareholder may transfer a share to another shareholder, while other shareholders generally have a one-month pre-emption right when a share is transferred to a third party. Consent is required only where the articles of association specifically impose such a condition.

This consent requirement is a significant legal protection for early-stage founders. A co-founder may generally transfer their share to a third party subject to the statutory pre-emption rules, unless the articles of association impose additional transfer restrictions or consent requirements. – unless the shareholders’ agreement and articles have been drafted to permit it. Most start-up founders do not realise this is the default and never explicitly document it.

The Minimum Share Capital Trap

Estonian law no longer requires a €2,500 minimum share capital for an OÜ. The minimum nominal value of a share is €0.01. The registered share capital must be contributed in accordance with the company’s formation documents and applicable law; an OÜ may be established with very low share capital. The former €2,500 deferred share-capital model is no longer the general rule for newly established OÜ companies. However, an OÜ with unpaid share capital cannot distribute dividends, and the unpaid amount appears as a receivable on the balance sheet – which investors and banks will notice.

Shareholders’ Agreement vs Articles of Association

Every start-up with more than one founder needs both documents. They serve different purposes and interact in specific ways that affect what investors can and cannot insist on.

Section 2 – Share Classes and Investor Preferences

How preferred shares work, what liquidation preference means in practice, and what founders give up at each round

Ordinary vs Preferred Shares

Pre-investment, most OÜ companies have only ordinary shares – all shareholders have equal economic and voting rights proportional to their ownership percentage. Once external investors join, they typically require preferred shares with rights not available to ordinary shareholders. Understanding what these rights mean economically is essential before signing any term sheet.

Liquidation Preference – What It Actually Costs Founders

A liquidation preference is a right that allows preferred shareholders to receive their investment back before ordinary shareholders receive anything in a sale, merger, or wind-down. It sounds protective – and it is, for investors. For founders, it determines how much of any acquisition price actually reaches their hands.

Anti-Dilution Protection

Anti-dilution provisions protect investors from value loss in a down-round – a funding round at a lower valuation than the previous one. They adjust the effective conversion price of preferred shares downward when a down-round occurs, effectively issuing more shares to the investor at no additional cost.

Section 3 – Founder Vesting

Why vesting matters, how the 4-year cliff structure works, and what happens when a founder leaves

Why Founders Need Vesting Agreements

Vesting is the mechanism by which a founder earns their equity ownership over time, rather than receiving it outright at incorporation. Without vesting, a co-founder who leaves the company after six months retains their full 30% stake – which sits on the cap table, earning nothing, potentially blocking investor rounds, and remaining as an unresolved problem until the company is acquired or the founder is bought out at whatever price they demand.

Most VC investors will require founder vesting as a condition of investment. Establishing it before external investors join is significantly easier and less expensive than negotiating it during a term sheet process. It is one of the highest-value structural decisions a founding team can make in the first month.

The Standard 4-Year Vesting Schedule

Good Leaver vs Bad Leaver

When a founder departs before full vesting, the treatment of their unvested shares depends on whether they are classified as a good leaver or bad leaver. This classification – and the specific treatment it triggers – must be defined in the shareholders’ agreement before any investor joins.

Section 4 – Employee Share Option Plans (ESOP)

Setting up, granting, vesting, exercising, and accounting for employee equity in an Estonian start-up

Why ESOP Matters

An ESOP is the mechanism through which start-ups offer equity to employees and key advisors who are not founding shareholders. It aligns long-term interests, allows start-ups to compete with higher salaries offered by larger companies, and creates a sense of ownership in people who are building the company.

In the Estonian ecosystem, ESOPs are increasingly standard from seed stage upwards. The typical pool size is 10–15% of fully diluted shares, established before a Series A. Investors prefer to see the pool already in place – they do not want to absorb dilution from an ESOP created after their investment.

Anatomy of an ESOP Grant

ESOP in an Estonian OÜ – The Legal Structure

Estonian OÜ law does not have a dedicated ESOP statute equivalent to the UK EMI scheme or US ISO/NSO framework. Most Estonian start-up ESOPs are structured as either: (1) an option agreement to purchase new shares at a set price in the future, (2) a phantom share plan (virtual shares that pay cash on exit without issuing real shares), or (3) a restricted share unit plan with deferred transfer.

Share-Based Payment Accounting Under the Applicable Reporting Framework

For companies applying IFRS, IFRS 2 governs the measurement and recognition of employee share options. The accounting treatment depends on whether the award is equity-settled or cash-settled and on the vesting conditions. This creates a non-cash charge that reduces reported profit, even though no cash leaves the company. The corresponding credit goes to an ESOP reserve in equity.

Employee Tax on ESOP in Estonia

The taxation of employee share options depends on the timing and conditions of exercise. Exercising an option before three years have passed from grant is generally treated as a taxable fringe benefit, while exercising after at least three years is generally not treated as a fringe benefit, subject to the statutory conditions and exceptions. Where exercise gives rise to a taxable fringe benefit, the employer is responsible for declaring and paying the applicable fringe benefit taxes.

This creates a practical problem: an employee may exercise options and receive shares worth €50,000 – but owe €26,500 in combined income and social tax immediately. If the company is private and the shares cannot be sold, the employee has a tax liability but no cash to pay it. This is known as the ‘dry income’ problem and it is the reason many start-ups delay encouraging exercise until there is a liquidity event.

Section 5 – Convertible Notes, SAFEs, and Pre-Equity Instruments

How pre-seed and seed capital is structured before a priced round, and what it means for your cap table and accounts

Why Convertible Instruments Exist

Valuing an early-stage start-up is difficult – the company has limited revenue, unproven product-market fit, and an uncertain future. Rather than spend weeks negotiating a valuation for a €100,000 angel cheque, convertible instruments allow investors to provide capital now and defer the valuation question to the next priced round, when more information is available.

The two most common instruments are the convertible note (a loan that converts to equity) and the SAFE (Simple Agreement for Future Equity – not a loan, not yet equity). Both defer valuation but have different legal, accounting, and tax treatments.

How Conversion Works at a Priced Round

When a Series A is raised, convertible instruments convert into equity at a price determined by: the pre-money valuation of the Series A, the valuation cap (if any), and the discount (if any). The conversion price is determined by the contractual terms of the SAFE or convertible note; a valuation cap and discount do not automatically guarantee the investor the most favourable possible price unless the agreement expressly provides for it.

Accounting Treatment of Convertible Instruments

The balance sheet classification of a convertible instrument determines how it affects your financial ratios, debt covenants, and investor perception. Getting this wrong is one of the most common errors in start-up accounting – and one of the most visible to investors during due diligence.

Section 6 – Cap Table Management and Dilution Modelling

Keeping your cap table accurate, modelling dilution scenarios, and preparing for investor due diligence

What a Clean Cap Table Looks Like

A clean cap table is one where every share, option, warrant, and convertible instrument is accurately recorded, every shareholder’s position is documented with a corresponding agreement, and the total of all instruments on a fully-diluted basis adds up to 100% with no unexplained discrepancies. Investors will ask for this on Day 1 of due diligence.

Dilution: Four Scenarios Every Founder Should Model

Business Register Obligations

Every change to the share structure of an Estonian OÜ must be registered with the Estonian Business Register (äriregister). This includes share issuances, share transfers, changes to share capital, changes to shareholder names or addresses, and changes to the articles of association. The Business Register is publicly accessible – anyone can see who owns what percentage of an Estonian company.