Founders comparing these three jurisdictions are usually shown three numbers: Estonia's 0%, Montenegro's 9%, and Portugal's five-year path to citizenship. All three are misleading, and two of them are now simply out of date.
This page sets out what each jurisdiction's mechanism actually is, corrects the figures that have moved, and is explicit about which parts we can state from primary sources and which need local counsel.
The three models
| Estonia | Montenegro | Portugal | |
|---|---|---|---|
| Core mechanism | Corporate tax deferred until profit is distributed | Progressive tax on profit as it arises | Residence-led; corporate tax is not the draw |
| Headline claim you will hear | "0% corporate tax" | "9% flat tax" | "EU passport in 5 years" |
| What is actually true | 0% on retained profit; tax falls due on distribution | 9% is the first band of a progressive scale, not a flat rate | The residence period for citizenship changed in May 2026 |
| Physical presence | e-Residency confers no right of entry or stay | A residence permit is available but is a separate process from forming a company | Low physical-presence requirement under the investment route |
| Where the catch usually is | Place of effective management and CFC rules in the founder's home country | Assuming company formation delivers residence automatically | Timeline to citizenship, and the routes that have been closed |
Estonia: deferral, not exemption
Estonia does not tax retained or reinvested corporate profit. That part of the story is accurate, and it is genuinely useful for a business reinvesting everything it earns.
What the "0%" framing omits is that the tax has not been forgiven — it has been deferred to the moment of distribution. On distribution, corporate income tax applies at 22%, calculated as 22/78 of the net amount distributed. On €100 of distributable profit, the company distributes €78 and pays €22.
Two changes matter for anyone working from older material. The rate rose from 20% to 22% with effect from 2025. And the reduced 14/86 rate, which previously applied to regular dividends distributed consistently over at least three years, was abolished from 2025 — so all distributions now sit at the standard rate.
Two further points are structural rather than arithmetic.
e-Residency is not immigration. The card is a means of authenticating remotely and administering a company; it confers no right to enter or remain in Estonia or the Schengen area. Anyone who has been told otherwise has been told something incorrect.
Where the company is managed matters. If the director runs the Estonian company from Germany, Türkiye or anywhere else, that country may treat the place of effective management as local and tax the company accordingly under its own rules, including controlled foreign company rules. This is not an Estonian problem to solve; it is a question for tax advice in the country where the founder actually lives.
Montenegro: tax as profit arises, and residence as a separate question
Montenegro taxes profit as it is earned rather than on distribution, on a progressive scale. Zakon o porezu na dobit pravnih lica, član 28 stav 2 sets it out: 9% up to €100,000 of taxable profit; €9,000 plus 12% of the excess between €100,000.01 and €1,500,000; €177,000 plus 15% of the excess above €1,500,000.01. The scale replaced the former flat rate under the amendments published in Sl. list CG 146/21, applying from 1 January 2022.
So "9% flat" is wrong in the same way "0%" is wrong — it describes one part of a structure. A company with €150,000 of taxable profit pays €15,000, an effective 10%. Our note on what Montenegro's 9% corporate tax really means works the figures through.
Extraction is a separate charge here too, though a smaller one than Estonia's. Član 29 stav 1 tačka 1 and stav 4 require withholding at 15% of the gross amount on dividends and profit shares paid to legal persons; where the shareholder is an individual, the personal income tax Act reaches the same rate by a different route. Član 29 stav 5 raises that to 30% where the recipient is a non-resident legal person from a territory with a lower tax burden that does not exchange information — but član 29 stav 7 disapplies that where the recipient is resident in a state with which a double tax treaty is in force.
The claim to be most careful with is the residence one. Forming a DOO does not automatically confer a residence permit on the founder or their family. A permit is applied for separately, is granted initially for one year, must be renewed, and the renewal depends on the company being genuinely active and its contributions being paid. And a Montenegrin residence permit is not Schengen access — Montenegro is an EU candidate, not a Schengen member, as our note on what a boravak does and does not do explains.
Two other Montenegrin figures are frequently misreported and worth correcting in the same breath: the VAT registration threshold is €30,000 under član 42 stav 1 of the VAT Act, not €100,000; and accommodation carries the 15% reduced VAT rate under član 24a stav 2 tačka 2, not 7%.
Portugal: the timeline changed in May 2026
Portugal has never been the low-corporate-tax option in this comparison. Its draw is the residence route and what that route eventually leads to — and that is precisely what has changed.
Under nationality rules that took effect on 19 May 2026, the residence period required before applying for Portuguese citizenship is seven years for EU and CPLP nationals and ten years for everyone else. The previous period was five years for all applicants. Any comparison written before that date — including the earlier version of this page — describes a timeline that no longer applies.
The investment routes have also narrowed. The real estate route was removed in October 2023. The remaining routes are capital-based, with the fund subscription route the one most investors use, alongside smaller thresholds for cultural and artistic contributions and for qualifying low-density-area investment.
We advise on Montenegro. We are not Portuguese counsel and we do not present the Portuguese position as settled: the figures above are stated as at the date at the foot of this page and should be confirmed with a Portuguese lawyer before any investment decision, because this is an area that has moved twice in three years.
What actually decides it
The comparison is not won on a rate. It is decided by four questions, and the answer to the first usually settles the rest.
Where will you physically be? If the founder will live and work in a fourth country, the place-of-effective-management and CFC rules of that country may override everything else on this page. That is the first question to answer, and it is answered by an adviser where the founder lives — not by a jurisdiction's marketing.
Will profit be retained or extracted? A business reinvesting everything is the case Estonia's deferral was designed for. A founder drawing profit out annually is not, because the deferral ends at exactly the moment they need the money.
Do you need to actually live somewhere? Estonia's e-Residency does not provide that. Montenegro's permit does, subject to a real application and real renewal conditions. Portugal's investment route does, on a low-presence basis, but the naturalisation horizon is now considerably longer.
What is the objective — operating base or passport? These are different projects. Building an operating company where it makes commercial sense, and pursuing a citizenship objective, are often better treated as two separate decisions than forced into one structure.
Where the answer is Montenegro, the next questions are which vehicle and how it will be owned, covered in our notes on DOO versus AD and on holding structures.
What we do and do not offer
We do not sell off-the-shelf structures, and we do not present any of these jurisdictions as a way to be invisible to a home tax authority. Montenegro in particular is an onshore system: resident companies file under the same statute as everyone else and keep their books under IFRS, and Montenegro has been on Annex II of the EU list of jurisdictions with outstanding commitments since October 2025, which is a transparency file rather than a blacklist.
What we can do is set out the Montenegrin position accurately, build and run the structure there if that is where it belongs, and tell you plainly when it does not.
The Montenegrin article numbers on this page are from the Zakon o porezu na dobit pravnih lica and the Zakon o porezu na dodatu vrijednost, checked on 26 August 2026. The Estonian and Portuguese figures are stated as at the same date from public sources and are outside our own practice; confirm them with counsel in those jurisdictions. Tax rates and immigration timelines in all three countries change by legislation.
If you want the Montenegrin option assessed properly against what your business actually does, our team can go through it with you.
