FIE Explained: Estonia's Sole Proprietor Tax Regime 2026

FIE (füüsilisest isikust ettevõtja) is Estonia's sole proprietor status, a self-employed individual registered directly with the Estonian Business Register, trading and invoicing under their own name without forming a separate legal entity like an OÜ (Estonia's private limited company). It's the simplest way to freelance or contract in Estonia, but it comes with a materially different tax mechanic than either employment or an OÜ.

Because a FIE has no employer. As a normal employee, the 33% social tax is an employer-side cost that never touches your net pay, it's paid on top of your salary, not out of it. As a FIE, there is no separate employer to absorb that cost, so the FIE pays the full 33% social tax themselves, directly reducing their own net income. On €55,000 of revenue, that's the difference between a FIE keeping 48.4% (€26,598) and an agency-paid equivalent keeping 79.8% (€43,868), the income tax is identical in both cases, the entire gap is the self-borne social tax.

Yes. Social tax for a FIE is calculated on the higher of actual business profit or a statutory minimum monthly obligation base, €10,632/year for 2026, meaning a FIE owes at least €3,508.56 in social tax annually even if their actual profit is lower. This floor matters most for part-time freelancers, early-stage sole proprietors, or anyone whose FIE income is genuinely small, the effective tax rate on very low profit can look much higher than 33% once this minimum applies.

Yes, the mechanics are identical: 22% flat rate applied to taxable income above the €8,400/year basic exemption (maksuvaba tulu). The only structural difference is what counts as taxable income, an employee's is gross salary, a FIE's is business profit (revenue minus deductible business expenses), and a FIE additionally deducts their own social tax before arriving at final taxable profit in a full return, though this calculator's simplified model applies income tax to the same base as social tax for clarity.

Not on a pure take-home comparison at these income levels, the agency structure clearly retains more, because it doesn't carry the self-borne 33% social tax. FIE status makes more sense when you have real deductible business expenses that meaningfully reduce your taxable profit, need the flexibility and legitimacy of formal sole-trader registration for client contracts, or are building toward incorporating an OÜ later. If your priority is simply maximizing net take-home on a straightforward day-rate contract, the agency/umbrella structure is the stronger starting point based on the figures here.

It doesn't apply to a FIE at all in the way it applies to an employee. An agency-paid contractor still has the standard 1.6% employee unemployment insurance withheld, exactly like a regular employee. A FIE, having no employer, pays no unemployment insurance premium under the employment mechanism, this isn't a benefit that offsets the social tax gap, it simply reflects that unemployment insurance is structured around employment relationships that a FIE, by definition, doesn't have.

Yes, this is one of FIE status's genuine advantages not captured in the headline retention percentages above, which assume zero business expenses for a clean comparison. A FIE can deduct real, documented business costs, equipment, software, home office proportion, professional services, from revenue before income tax applies, reducing the taxable base. An agency-paid contractor generally can't deduct personal business expenses the same way, since they're taxed as employment income. If you have substantial genuine expenses, model them through the freelance mode specifically, they narrow the gap shown in the zero-expense comparison above.