Tax havens are a byproduct of a simple fact: capital is more mobile than people and borders. As long as money can move faster than a state can tax it, there will always be a jurisdiction ready to accept foreign capital in exchange for a modest share. Over a hundred years, these places have evolved from impenetrable banking secrecy to near-total transparency. Understanding this trajectory is useful for soberly assessing what is offered today under the banner of "optimization."
Concept
A tax haven is a jurisdiction that attracts foreign capital through low taxes, light regulation, and, historically, secrecy. Over a century, the institution has evolved from respectable Swiss deposit secrecy to a global system of automatic exchange in which hiding money has become nearly impossible. Understanding this history is useful: it explains why international planning has shifted from secrecy to real presence and reporting.
The benefit of a haven consists of three components. First—the rate: zero or a symbolic percentage on income, capital gains, or inheritance. Second—secrecy: a foreign tax authority cannot discover who owns an account or company. Third—a network of double taxation avoidance agreements through which income passes, shedding withholding taxes along the way. The classic offshore scheme of the twentieth century worked when all three elements aligned. Breaking any one of them rendered the structure meaningless; it was precisely along these seams that it was dismantled over the past twenty years.
Birth: Switzerland and the Alpine Triangle
The first recognizable cluster of tax havens emerged in the mid-1920s—the Zurich–Zug–Liechtenstein triangle, to which Luxembourg was added in 1929. Privacy was the foundation. Switzerland is rightly called the grandfather of banking secrecy: disclosure of client information had been considered a serious offense since the beginning of the century, and the Federal Banking Act of 1934—its Article 47—for the first time made disclosure a criminal offense rather than merely a breach of contract. Secrecy ceased to depend on a banker's good faith and became an obligation backed by the threat of imprisonment; against the backdrop of political instability in Europe, this turned Switzerland into the continent's safe—a status it held for nearly eight decades. Thus was born the model that would later be copied worldwide: low tax plus guaranteed bank silence.
Expansion: Islands and Eurodollars
After World War II, the network of havens expanded. The dissolution of the British Empire left convenient infrastructure: the Cayman and British Virgin Islands, the Bahamas, and the Channel Islands became home to thousands of shell companies. The Cayman Islands bet on the absence of direct taxes and funds, while the British Virgin Islands focused on cheap and fast incorporation: the International Business Companies Act of 1984 gave birth to the IBC—an offshore company that could be established in a day; by the 1990s, such structures numbered in the hundreds of thousands. In London in the 1960s, the eurodollar market emerged—dollar deposits outside U.S. regulation—which gave offshore finance depth, liquidity, and a second wind. By the end of the century, a significant portion of global capital passed through these centers, which competed with zero rates and anonymous structures.
How It Worked: Schemes and Anonymous Structures
The value of a haven rested on two things: a low or zero rate and the ability to break the visible chain of ownership. Profits were channeled through intermediate jurisdictions—paying royalties, interest, and service fees to related structures so that the taxable remainder settled where the rate was lowest. Everyday tools included transfer pricing between affiliated companies, treaty shopping, and thin capitalization. On top of this lay anonymity: bearer shares, nominee directors, trusts, and foundations behind which the real beneficial owner was lost.
Classic Routes
The most famous route—the "Double Irish" combined with the "Dutch Sandwich"—allowed U.S. technology groups to channel royalties through Irish and Dutch companies to a zero-tax jurisdiction, keeping the effective rate in the single digits. Ireland closed the scheme to new users in 2015 and definitively by the end of 2020. The scale of such structures was later exposed by offshore leaks—discussed below in the section on the turning point.
Application: Why Companies and Families Went There
Corporate demand for havens rested on the techniques discussed above: through a holding in a jurisdiction without withholding tax, dividends from subsidiaries were collected and distributed further through the network of tax treaties, while royalties and interest were routed through intermediate companies in the Netherlands, Luxembourg, and Ireland to erase the tax base where activity actually took place.
Private capital went to havens for a different logic. A trust in Jersey or the Cayman Islands protected assets from creditors and organized succession, a foundation in Liechtenstein held family property for generations, and a Swiss account provided privacy that was not then considered reprehensible. From this practice grew the ideology of mobility—flag theory, according to which citizenship, tax residency, assets, and business are spread across different countries. Most of these instruments are legal today; what has changed is the requirement for them—privacy must now be backed by reporting.
Turning Point: FATCA and CRS
The era of secrecy cracked at the beginning of the twenty-first century. The 2008 financial crisis and the scandal surrounding Swiss bank UBS, which helped Americans evade taxes, turned pressure into political inevitability: in 2009, the bank paid $780 million and handed over the names of American clients. In 2010, the U.S. enacted FATCA—a law requiring banks worldwide to report on accounts of U.S. taxpayers under threat of a 30 percent penalty withholding; refusal meant loss of access to the dollar system. The OECD picked up the idea and in 2014 turned it into a multilateral automatic exchange standard—the Common Reporting Standard (CRS). The first exchange took place in September 2017 among 54 "first wave" jurisdictions, and in 2018 Switzerland joined, formally closing the era begun by the 1934 law. The reputation of secrecy was simultaneously undermined by leaks: the Panama Papers in 2016—11.5 million documents from the Panamanian firm Mossack Fonseca—followed by the Paradise Papers in 2017 and the Pandora Papers in 2021.
Regulation: From Secrecy to Disclosure
The program for this restructuring was set by the OECD's 1998 report "Harmful Tax Competition": it identified four features of a harmful haven—absence or symbolic tax; lack of real information exchange; opacity; registration of structures without requiring real activity. The next quarter-century methodically closed each of these: data exchange was ensured by FATCA and CRS, transparency by beneficial owner registers, and artificial profit shifting was struck by BEPS and European directives.
In 2013, the OECD and G20 launched the BEPS project, and in 2015 published a package of fifteen actions against base erosion and profit shifting—from countering hybrid schemes to transfer pricing requirements. Action 5 addressed harmful preferential regimes and required real presence where a company declares profit (nexus approach to patent boxes), Action 6 introduced a test against abuse of tax treaties, later enshrined in the MLI, and country-by-country reporting made the geography of large groups' profits visible.
The European Union translated these principles into binding norms. The 2016 ATAD directive introduced common CFC rules, interest deduction limitations, exit tax, and GAAR, applicable from 2019; the DAC6 directive obliged advisors to disclose cross-border schemes with certain hallmarks. In December 2017, a "blacklist" of non-cooperative jurisdictions appeared—together with a "gray" list, it is updated twice a year and nudges offshore centers to bring their rules into compliance; in the current edition (February 2026), the blacklist includes ten jurisdictions, including Russia.
Registers are the second front. Disclosure of ultimate owners through beneficial owner registers became a common standard: the EU's Fifth Anti-Money Laundering Directive (5AMLD) required public UBO registers, until the EU Court on November 22, 2022 (joined cases C-37/20 and C-601/20) found unrestricted public access a disproportionate interference with private life (Articles 7 and 8 of the Charter). Access was narrowed to competent authorities and persons with a legitimate interest. The pendulum between transparency and privacy continues to swing.
Economic Substance: The End of the "Mailbox"
The most sensitive blow to the classic model was dealt by economic substance laws. Under pressure from the EU Code of Conduct Group and BEPS Action 5, BVI, the Cayman Islands, Bermuda, the Bahamas, Jersey, Guernsey, and the Isle of Man simultaneously introduced them in 2018–2019; they came into force on January 1, 2019. A company conducting "relevant activity" (holding, financing, leasing, insurance, fund management, IP, distribution) must demonstrate core income-generating activities (CIGA) in the jurisdiction: office, qualified personnel, local expenditure, and key decisions made on-site. An empty shell company with a nominee director fails the test and falls under information exchange and penalties; substance has turned from an abstract requirement into annual reporting with concrete metrics.
Pillar Two: Global Minimum 15%
In parallel, the OECD closed the race to the bottom on rates. Under the 2021 Inclusive Framework agreement, uniting about 140 jurisdictions, GloBE rules were agreed: international groups with revenue of €750 million or more per year pay an effective tax of at least 15 percent in each country of presence. Where the rate is lower, the difference is collected through the income inclusion rule (IIR) and a backstop in the form of the undertaxed profits rule (UTPR), and the jurisdiction can keep the top-up itself through a qualified domestic minimum top-up tax (QDMTT). The rules apply to financial periods beginning January 1, 2024 (in the EU—under Directive 2022/2523); by early 2025, Pillar Two has been launched in more than fifty jurisdictions, and the first GIR reports for the calendar year are due by June 30, 2026. The effect is visible directly on the map of havens: Bermuda introduced a 15 percent corporate tax for large groups from 2025, and the UAE introduced a general 9 percent corporate tax from 2023. Shifting profit to a zero-tax jurisdiction for the sake of the rate alone loses its point.
Today: Transparency and Minimum Tax
By 2025, CRS operates in more than 120 jurisdictions and covers about three-quarters of global financial wealth. Added to this is the Pillar Two global minimum tax—15 percent for large groups—which devalues the simple race to the bottom on rates. The classic haven with zero tax and anonymity has almost disappeared; in its place are jurisdictions that offer a low rate in exchange for real presence (substance) and full reporting. Russia has also gone through its own version of this path—discussed below.
Russia: Its Own Wave of De-Offshorization
Russia has followed the same path on its own schedule. The 2014 CFC law forced Russian residents to declare and tax the undistributed profits of foreign companies. Several waves of capital amnesty (2015–2019 and later) provided a window to disclose foreign assets and restructure without penalties. Since 2018, special administrative regions (SAR) on Oktyabrsky Island in Kaliningrad and Russky Island in Vladivostok have offered redomiciliation—an "internal offshore" for returning holdings. In 2023, Russia suspended key provisions of double taxation avoidance agreements with "unfriendly" countries, and the European Union added it to the list of non-cooperative jurisdictions. For private capital, this raised the cost of old cross-border structures and prompted a review of residency and ownership chains.
Why Havens Are Needed: Typology of Use
Most capital passes through low-tax jurisdictions for reasons far removed from evasion. A holding company in a neutral jurisdiction collects dividends from subsidiaries in different countries, relying on a network of tax treaties and participation exemption, and distributes them onward without excess withholding taxes. Investment funds have been domiciled for decades in the Caymans (hedge funds) and in Luxembourg and Ireland (regulated retail funds): there is predictable law and no tax at the fund level, and investors pay at home. SPVs are used to issue Eurobonds and conduct securitization; IP rights are held there, risks are insured in captives, and joint ventures are assembled when neither party wants to enter the other's tax system. Family capital is structured through trusts and foundations. The line between planning and evasion runs along two lines: are taxes paid where value is created, and is the structure disclosed to tax authorities.
Application: What Remains Legal
Low taxes as such have not gone anywhere; what has disappeared is their anonymous, substance-less version. The Cayman Islands, BVI, and the UAE continue to operate, but now accept structures with real presence—office, employees, decisions made on-site. Holding jurisdictions like the Netherlands, Luxembourg, and Ireland compete on the quality of their treaty network and predictability of administration; for long-term asset ownership, private foundations and trusts are still used, but now with a beneficial owner known to tax authorities.
For private capital, the logic has shifted from concealment to legal rate differentials and the owner's place of residence. Regimes like non-dom, remittance basis, or flat tax provide savings openly, in exchange for a real move and payment of fixed sums. Inheritance taxes and exit taxes upon change of residency have become a separate planning topic. International structure remains a working tool and now rests on three pillars: a beneficial owner known to one's tax authority, real substance, and a network of agreements.
Evolution and Conclusions
Over a century, the institution of havens has come full circle: the secrecy on which the first model rested has been largely dismantled—banking secrecy has retreated before automatic exchange, anonymous structures before UBO registers, zero rates before minimum tax. Each new wave of regulation—FATCA, CRS, BEPS, ATAD, Pillar Two—cut off another way to hide profit or owner. The jurisdictions that survived were those that restructured for transparency and offer real value: predictable law, neutrality, treaty network, banking and judicial infrastructure, expertise. Low rates persist in Ireland, Singapore, the UAE, and a number of Caribbean centers, but are given in exchange for real activity and full reporting; pure anonymity has disappeared almost everywhere. Russia has gone through its own version of this path—the 2014 CFC law, waves of capital amnesties, and suspension of a number of tax treaties have integrated it into the general trend of de-offshorization.
Transparency continues to deepen and reaches new asset classes: the CARF standard extends automatic reporting to crypto-assets — the first wave has been collecting data since 2026, with the first exchanges in 2027. For family capital, the conclusion is simple: planning should proceed from the assumption that any structure will sooner or later become visible to the tax authority—both one's own and foreign—and the benefit must remain lawful in full light. Planning has shifted from concealment to structuring that withstands scrutiny: taxes are paid where value is created, the structure is disclosed, presence is confirmed by facts. Havens have survived as a class of jurisdictions but now operate transparently—and relationships with them must be built according to the rules of this transparency.
This material is for overview purposes and does not constitute individual tax or legal advice.