·Fintech Accounting
FIE → OÜ: When the Switch from Estonian Sole Trader to Private Limited Company Actually Pays Off
Switching from FIE (füüsilisest isikust ettevõtja, the Estonian sole trader) to OÜ (osaühing) is not automatically a tax win. The honest answer depends on three numbers: annual net profit, how much of that profit the owner actually needs to draw personally this year, and the administrative cost of running the OÜ. This post walks through the break-even we use with clients at €20k, €50k and €100k profit, the non-tax reasons that often decide, and the timing window that keeps VAT reconciliation out of the picture.
How FIE and OÜ are taxed in 2026
FIE (füüsilisest isikust ettevõtja) pays 22% personal income tax (PIT) on net profit plus 33% social tax on that same net profit, with a monthly minimum base set annually by EMTA (the recent full-time figure has been around €820/month; check emta.ee for the 2026 number). Advance payments are due quarterly. The FIE is personally liable for business debts — creditors can reach the owner's personal assets. There is no share capital requirement and administration is light: a simple receipts-and-expenses ledger is often enough.
OÜ (osaühing) is taxed under Estonia's distributed-profit regime: 22% CIT is due only when profit is actually distributed as dividends. Retained and reinvested profit is taxed at 0% until it leaves the company. Minimum share capital has been €1 since the 2023 reform (previously €2,500). Liability is limited to company assets. An annual report to RIK is mandatory, monthly bookkeeping is the practical baseline, and any owner who draws a salary pays PIT 22% plus social tax 33% on that payroll line.
Break-even: €20k, €50k, €100k net profit
The crossover between FIE and OÜ is not a revenue number — it is a drawdown number. Assume for a moment the owner distributes all profit personally this year. At €20k net profit, FIE is usually still cheaper once OÜ bookkeeping and annual-report overhead is counted; the tax saving on paper does not cover the admin. At €50k, full distribution is roughly a toss-up, and OÜ pulls ahead as soon as part of the profit is retained. At €100k, OÜ is the cleaner structure on distribution math alone, and the gap widens sharply with any retained profit.
The reason is the 0% rate on undistributed profit. Every euro left inside the OÜ at year-end carries no CIT until it is paid out. The 22% CIT is deferred, not avoided — but deferral compounds, especially for consultants and developers who reinvest into equipment, training, or a cash buffer. Run the numbers on your own drawdown model, not on a generic table.
The non-tax reasons that often decide
Three non-tax factors come up in almost every conversation. First, liability shield: an OÜ separates business debts from personal assets. For any FIE carrying inventory, signing client contracts above €20k, or hiring staff, the protection matters more than the tax arithmetic. Second, credibility with enterprise clients: large procurement departments frequently will not contract with a natural person at all — an OÜ signals operational permanence and makes B2B sales easier. Third, co-founders and equity: bringing in a partner or issuing shares to a key hire is only possible inside an OÜ. A FIE cannot issue shares.
When the switch is the wrong call
The switch is not automatic. Small side-project income — a few thousand euros a year — almost never justifies the OÜ overhead. Short-duration work with a single client, a personal brand with low liability exposure, or client contracts that specifically require FIE invoicing (rare, occasionally found in cultural-sector grants) all push the answer back toward FIE. Paying €300–€600 per year in accounting fees to run an OÜ that earns €8,000 is real margin lost, not a rounding error. If the business stays small on purpose, FIE can be the right long-term answer.
Transition mechanics and timing
Typical timeline for a clean cutover is two to four weeks. Register the OÜ at RIK through the e-Business Register, novate client contracts so invoicing flows through the new entity, re-register for VAT if the FIE held a KMKR number (the VAT number does not automatically carry over), close the FIE activity period at EMTA, and file mid-year PIT and social tax returns for the FIE stub. Bank accounts, e-invoicing set-up, and any payment-provider onboarding should be live on the OÜ before the first invoice is issued.
Timing matters more than most founders expect. The cleanest cutover is 1 January — one closed FIE year, one full OÜ year, no mid-year reconciliation. Second-best is the first day of any month. Avoid mid-quarter switches if the FIE is VAT-registered: reconciling a split KMD period adds work for no benefit. If in doubt, talk to a bookkeeper before you register the OÜ, not after. Sequence errors at the registration stage are cheaper to prevent than to fix.