Evolving Tax Havens: A Competitive Success Index for Small Jurisdictions in Business Aviation Finance

Main Article Content

Griffin Abel
Dimitrios Siskos

Abstract

Small jurisdictions — microstates and autonomous territories — play a disproportionate role in the global business aviation finance market, managing billions of dollars in high-value, mobile assets through specialized registries. However, little empirical research has systematically examined why some jurisdictions consistently outperform others. This study introduces a Competitive Success Index (CSI) to measure and compare the structural competitiveness of seven leading aircraft registries in small jurisdictions. The CSI operationalizes thirteen success factors across three categories: legality and regulatory quality, tax regime and fiscal policy, service quality and operational efficiency. Category weights are calibrated using Ordinary Least Squares (OLS) regression on net aircraft registration growth from 2019 to 2024, controlling for exposure to international sanctions. Legality and regulatory quality emerged as the dominant predictors of competitiveness, far outweighing fiscal incentives or operational factors. This challenges the common assumption that tax policy is the primary driver of registration decisions. Instead, creditor protection, regulatory predictability, and governance credibility appear to play a more decisive role in contemporary transactions. While the CSI demonstrates limited correlation with short-term registration growth, the findings highlight an important distinction between institutional competitiveness and cyclical market behavior, particularly during periods of geopolitical disruption. Given the study’s small sample (n=7), these findings should be treated as preliminary. The CSI offers a scalable, quantitative tool to assist policymakers, registry authorities, and industry stakeholders in navigating the allocation of billions of dollars in aviation assets.  

Article Details

Section
Peer-Reviewed Articles
Author Biographies

Griffin Abel, Embry-Riddle Aeronautical University

Griffin Abel holds an M.B.A. in Aviation from Embry-Riddle Aeronautical University and a B.S. in Kinesiology from the University of Alabama at Birmingham. His background includes pre-medical training in cadaveric anatomy and human performance optimization, as well as graduate-level study in risk assessment and international business. He has experience in aerobatic flight operations and aviation training development for aspiring military pilots. He values multidisciplinary, systems-based approaches to solving complex problems.

Dimitrios Siskos, Embry-Riddle Aeronautical University

Dimitrios Siskos is an assistant professor of finance at the College of Business on the Worldwide Campus at Embry-Riddle Aeronautical University. He has extensive experience in the professional industry, as well as teaching and researching in academia. He is enthusiastic about imparting knowledge and believes in constant self-improvement. He is very meticulous and values accurate data. Additionally, he owns and manages www.thinkingfinance.info, which features his research, projects, and writings.

References

st Step Solution. (2025, November 14). The new shape of “offshore” in 2025 - and why Malta belongs in the conversation. https://www.1step.eu/the-new-shape-of-offshore-in-2025-and-why-malta-belongs-in-the-conversation/

-REG. (n.d.-a). Customers are important for 2-REG. https://www.2-reg.com/customers/

-REG. (n.d.-b). Guernsey Aviation Requirements (GARS). https://www.2-reg.com/legislation/gars/

AIC Jets Corporation. (n.d.-a). Aruba aircraft registration. https://www.aicjetscorp.com/offshore/aruba-aircraft-registration

AIC Jets Corporation. (n.d.-b). Bermuda aircraft registry. https://www.aicjetscorp.com/offshore/bermuda-aircraft-registration

Alcock, C. (2012, December 11). San Marino relaunches aircraft registry. Aviation International News. https://www.ainonline.com/aviation-news/business-aviation/2012-12-11/san-marino-relaunches-aircraft-registry

Arman, S., Howell, S., & Herrod, N. (2023, July 11). Aviation finance & leasing 2023: Cayman Islands. Mondaq. https://www.mondaq.com/caymanislands/leasing/1340002/aviation-finance-leasing-2023-cayman-islands

AvBuyer. (2019, March 11). Do aircraft registries impact international operations? https://www.avbuyer.com/articles/aircraft-ownership/do-aircraft-registries-impact-international-operations-112400

Aviation Registry Group. (n.d.). About - The Registry of Aruba. https://www.argroup.aero/about-6

Beccari, D., & Podeschi, F. (2016). Aviation finance & leasing. Law Business Research Ltd. https://www.beccaripodeschi.com/_files/ugd/783d92_a06a71f5428f42df98d423173cc2a61a.pdf

Bermuda Civil Aviation Authority. (2020). Annual report 2019/20. http://parliament.bm/admin/uploads/report/fca80f55302c88fd271b040cb8ef371a.pdf

Bermuda Civil Aviation Authority. (2025). Annual report 2023/24. https://www.bcaa.bm/sites/default/files/Web%20Docs/BCAA01-4897%2023-24-ANNUAL-REPORT_06.pdf

Bermuda Civil Aviation Authority. (n.d.-a). Customer support. https://www.bcaa.bm/customer-support

Bermuda Civil Aviation Authority. (n.d.-b). Overseas territories and aviation requirements. https://www.bcaa.bm/otars

Cafico International. (2024, December 4). Ireland as the domicile of choice for aircraft leasing. https://www.caficointernational.com/insights/ireland-as-the-domicile-of-choice-for-aircraft-leasing/

Chetcuti Cauchi Advocates. (2024, September 25). Malta aircraft ownership structures. https://www.ccmalta.com/solutions/malta-aircraft-ownership-structures

Civil Aviation Authority. (n.d.). State Safety Program diagram [PDF]. https://www.caa.co.uk/media/pr2iffom/sspdiagram.pdf

Civil Aviation Authority of the Cayman Islands. (2019, December 31). Annual report 2019. https://www.caacayman.com/wp-content/uploads/annual_returns/CAACI-ANNUAL-REPORT-2019.PDF

Civil Aviation Authority of the Cayman Islands. (2024, December 31). 2024 annual report. https://www.caacayman.com/wp-content/uploads/CAA-Annual-Report-compressed.pdf

Civil Aviation Authority of the Cayman Islands. (n.d.-a). Aircraft registration. https://www.caacayman.com/aircraft-registry/registering-an-aircraft/

Civil Aviation Authority of the Cayman Islands. (n.d.-b). Operational requirements. https://www.caacayman.com/aircraft-registry/registering-an-aircraft/operational-requirments/

Coletto, V. (2024, December 9). The 2024 guide to San Marino tax. IMI Daily. https://www.imidaily.com/europe/the-2024-guide-to-san-marino-tax/

Consulate of the Republic of San Marino to the United Kingdom. (2025, October 15). San Marino’s sovereign rating upgrade: A strong foundation for economic growth. https://www.consolatosanmarino.uk/en/news/san-marinos-sovereign-rating-upgrade-a-stronger-foundation-for-economic-growth/

Corrieri Cilia. (n.d.). VAT on aircraft leasing. https://corriericilia.com/publications/malta-aircraft-vat-leasing

Council of the European Union. (2025, October). EU list of non-cooperative jurisdictions for tax purposes. https://www.consilium.europa.eu/en/policies/eu-list-of-non-cooperative-jurisdictions/

Deloitte. (2025, December 17). First ratification instrument for STTR MLI deposited by San Marino. Tax at Hand. https://www.taxathand.com/article/40739/OECD/2025/First-ratification-instrument-for-STTR-MLI-deposited-by-San-Marino

Department of Economic Development. (2015, August). Consultation on extension of ratification of the Cape Town Convention and Aircraft Protocol to the Isle of Man. Isle of Man Government. https://www.gov.im/media/1357191/consultation-on-cape-town-convention-and-aircraft-protocol.pdf

Dixcart Air Marine. (2024, May 3). A guide to the advantages of aircraft registration in: Cyprus, Guernsey, Isle of Man, Madeira (Portugal), and Malta. https://dixcartairmarine.com/aircraft-registration/

DQ Advocates. (n.d.). The Isle of Man’s ship and aircraft registries. https://dq.im/the-isle-of-mans-ship-and-aircraft-registries/

Endegnanew, Y., Amo-Yartey, C., & Turner-Jones, T. (2012, February 28). Fiscal policy and the current account: Are microstates different? (IMF Working Paper No.12/51). SSRN. https://ssrn.com/abstract=2012236

European Union Aviation Safety Agency. (n.d.). EASA by country. https://www.easa.europa.eu/en/domains/international-cooperation/easa-by-country

Federal Aviation Administration. (2025, April 18). International Aviation Safety Assessment (IASA) program. https://www.faa.gov/sites/faa.gov/files/IASAWSR119r.pdf

Finnigan, B., Travers, J., & Stocker, M. (2021, September). 10 things you need to know about… utilising a Cayman Islands SPV for aviation finance transactions. Conyers. https://www.conyers.com/publications/view/10-things-you-need-to-know-about-cayman-islands-spvs-for-asset-finance-transactions/

Gatti, S. M. (n.d.). Registration of aircraft and ship in San Marino. Studio Gatti. https://www.studiogatti.sm/en/aircraft-and-ship-registration-in-san-marino

Grand View Research. (2026). Business jet market (2025 - 2030). https://www.grandviewresearch.com/industry-analysis/business-jet-market

Hodgetts, R. (2025, June 5). Hongkong Jet acquires San Marino AOC. Corporate Jet Investor. https://www.corporatejetinvestor.com/news/hongkong-jet-acquires-san-marino-aoc/

Huxtable, J. (2014, December 5). Guernsey’s 2-REG aircraft registry - the tax angle. Mondaq. https://www.mondaq.com/guernsey/aviation/357532/guernseys-2-reg-aircraft-registry-the-tax-angle

International Civil Aviation Organization. (n.d.-a). Cape Town Convention and Protocol. https://www.icao.int/cape-town-convention-and-protocol

International Civil Aviation Organization. (n.d.-b). Safety audit results: USOAP interactive viewer. https://www.icao.int/usoap/safety-audit-results-usoap-interactive-viewer

Johnson, B. (2020, January 15). How has the Isle of Man pioneered the registration of private and corporate aircraft? Ocorian. https://www.ocorian.com/knowledge-hub/insights/how-has-isle-man-pioneered-registration-private-and-corporate-aircraft

Lewin, M. (2025, November 4). Where should business jet owners register their aircraft? IQ-EQ. https://iqeq.com/insights/where-should-business-jet-owners-register-their-aircraft/

Lindemann, A., & Zakharova, T. (2024, October 11). Malta as a leading hub for protected cell companies and incorporated cell companies. Mondaq. https://www.mondaq.com/corporate-and-company-law/1528890/malta-as-a-leading-hub-for-protected-cell-companies-and-incorporated-cell-companies

McLean, J. E., & Atherden, A. F. (2020, February). Need a better, more cost effective way of owning multiple aircraft? Conyers. https://www.conyers.com/wp-content/uploads/2020/02/2020-02-BDA-Article-Need-a-Better-More-Cost-Effective-Way-of-Owning-Multiple-Aircraft-1.pdf

McManus, F. (2025, April 2). Why Ireland is the global capital of aviation finance. IQ-EQ. https://iqeq.com/insights/why-ireland-is-the-global-capital-of-aviation-finance/

Moody’s. (2024a, May 24). Aruba, Government of. https://www.moodys.com/entity/806356869/overview

Moody’s. (2024b, June 4). Bermuda, Government of. https://www.moodys.com/entity/600013144/overview

Moody’s. (2024c, November 22). Malta, Government of. https://www.moodys.com/entity/600012947/overview

Moody’s. (2025a, June 24). Cayman Islands, Government of. https://www.moodys.com/entity/600010327/overview

Moody’s. (2025b, November 28). Isle of Man, Government of. https://www.moodys.com/entity/600052342/overview

Oceanskies. (n.d.). Guernsey aircraft registration (2-REG). https://oceanskies.com/guide/guernsey-aircraft-registration-2-reg/

Offshore Protection. (2025, July 24). Is Aruba a tax haven? Offshore jurisdiction review. https://www.offshore-protection.com/offshore-jurisdiction/aruba-tax-haven

Organisation for Economic Co-operation and Development. (n.d.). Base erosion and profit shifting (BEPS). https://www.oecd.org/en/topics/policy-issues/base-erosion-and-profit-shifting-beps.html

Piney, J. (2019, May). Benefits of registering private and corporate aircraft in Bermuda. Conyers. https://www.conyers.com/publications/view/benefits-of-registering-private-and-corporate-aircraft-in-bermuda/

Piney, J., & Wilson, A. (2024, June 25). Aviation financing & leasing. Mondaq. https://www.mondaq.com/aviation/1483088/aviation-financing-leasing

PricewaterhouseCoopers. (2025a, July 15). Cayman Islands - Overview. https://taxsummaries.pwc.com/cayman-islands

PricewaterhouseCoopers. (2025b, August 27). Malta - Corporate - Taxes on corporate income. https://taxsummaries.pwc.com/malta/corporate/taxes-on-corporate-income

PricewaterhouseCoopers. (2025c, September 30). Bermuda - Corporate - Taxes on corporate income. https://taxsummaries.pwc.com/bermuda/corporate/taxes-on-corporate-income

PricewaterhouseCoopers. (2025d, September 30). Bermuda - Overview. https://taxsummaries.pwc.com/bermuda

PricewaterhouseCoopers. (2025e, December 17). Guernsey, Channel Islands - Overview. https://taxsummaries.pwc.com/guernsey

PricewaterhouseCoopers. (2026, January 7). Pillar Two country tracker. https://www.pwc.com/gx/en/tax/international-tax-planning/pillar-two/pwc-pillar-two-country-tracker-summary-v2.pdf

Quayle, S., & Whitley, J. (2023, August 9). Aviation finance & leasing: Isle of Man. The Legal 500 Country Comparative Guides. https://www.cains.com/wp-content/uploads/2023/08/The-Legal-500Aviation-Finance-Leasing-Comparative-Guide.pdf

Registry of Aruba. (n.d.-a). About The Registry of Aruba. https://theregistryofaruba.com/

Registry of Aruba. (n.d.-b). Taxation. https://theregistryofaruba.com/documents/registration/taxation/

San Marino Aircraft Registry. (n.d.-a). Aircraft which are in storage, parked or between leases. https://www.smar.aero/registration/registration-of-airlines-which-are-in-storage-parked-or-between-leases/

San Marino Aircraft Registry. (n.d.-b). San Marino revamps its business aircraft registry. https://www.smar.aero/san-marino-revamps-its-business-aircraft-registry/

Santangeli, M. (2024, December 18). Why register your aircraft in the Cayman Islands? Ogier. https://www.ogier.com/news-and-insights/insights/why-register-your-aircraft-in-the-cayman-islands/

Sentient International. (2025, August 13). The best kept secret of smart structuring…the Isle of Man holding company. Mondaq. https://www.mondaq.com/isleofman/shareholders/1665624/the-best-kept-secret-of-smart-structuringthe-isle-of-man-holding-company

Sentient International. (n.d.-a). A guide to aircraft registration [PDF]. https://www.sentientinternational.com/wp-content/uploads/2024/07/eBook-Aircraft-Registration.pdf

Sentient International. (n.d.-b). Unlocking success: Why choose the Isle of Man for aircraft registration. https://www.sentientinternational.com/why-choose-the-isle-of-man-for-aircraft-registration/

Sentient International. (n.d.-c). Why Malta is taking off as Europe’s new aviation powerhouse. https://www.sentientinternational.com/why-malta-is-taking-off-as-europes-new-aviation-powerhouse/

Sheehan, J., Mulpeter, P., Burbridge, E., Gallagher, M., & Dempsey, E. (2024, September 20). Pillar Two - global minimum taxation & Ireland. Walkers Global. https://www.walkersglobal.com/en/Insights/2024/09/Pillar-Two-global-minimum-taxation-and-Ireland

Simpson, A. (2022). On the identification and definition of microstates. Journal of International Affairs, 74(2). https://jia.sipa.columbia.edu/content/identification-and-definition-microstates

Solomon, A. (2025, September 13). Aircraft registry rebuilds after global sanctions. The Royal Gazette. https://www.royalgazette.com/transport/news/article/20250913/aircraft-registry-rebuilds-after-global-sanctions/

Standard & Poor’s Global Ratings. (2024, January 12). Guernsey “A+/A-1” ratings affirmed; outlook stable. https://www.spglobal.com/ratings/en/regulatory/article/-/view/type/HTML/id/3109947

Transport Malta. (2019, January 7). Information and advisory notice No. 17. https://www.transport.gov.mt/IAN_17_Registration_of_Aircraft_Issue_8.pdf-f3077

Transport Malta. (2021, October 27). A decade of Maltese aviation jurisdiction. https://www.transport.gov.mt/news/a-decade-of-maltese-aviation-jurisdiction-5183

UNIDROIT. (n.d.-a). D - Malta. https://www.unidroit.org/instruments/security-interests/aircraft-protocol/states-parties/d-malta/

UNIDROIT. (n.d.-b). D - Netherlands ct. https://www.unidroit.org/instruments/security-interests/cape-town-convention/states-parties/d-netherlands-ct/

UNIDROIT. (n.d.-c). D - San Marino. https://www.unidroit.org/instruments/security-interests/aircraft-protocol/states-parties/d-san-marino/

UNIDROIT. (n.d.-d). D - United Kingdom. https://www.unidroit.org/instruments/security-interests/aircraft-protocol/states-parties/d-united-kingdom/

United Nations. (1948). Convention on International Civil Aviation (United Nations Treaty Series, Vol. 15, No. 102). https://treaties.un.org/doc/publication/unts/volume%2015/volume-15-ii-102-english.pdf

Walkers Global. (2022, April 5). Guernsey aircraft registry (“2-REG”) guide to transitional registrations. https://www.walkersglobal.com/en/Insights/2022/04/Guernsey-Aircraft-Registry-2REG-Guide-to-Transitional-Registrations

Wikimedia Commons. (n.d.). Category: Aircraft registered in Aruba. https://commons.wikimedia.org/wiki/Category:Aircraft_registered_in_Aruba

World Bank Group. (n.d.). Worldwide Governance Indicators. https://www.worldbank.org/en/publication/worldwide-governance-indicators/interactive-data-access

Zerafa Advocates. (2025, March 26). Key benefits of registering a private aircraft in Malta. https://www.zerafa.com.mt/key-benefits-of-registering-a-private-aircraft-in-malta/