Citizenship by investment is a regulated legal process through which eligible applicants may obtain citizenship after completing an approved investment and passing government due diligence. Selecting an experienced advisory firm is important because applications can involve source-of-funds evidence, background screening, certified documents, family eligibility rules and communication with authorised government bodies.
The following editorial list identifies ten citizenships by investment companies and firms to consider in 2026. It is based on publicly available information concerning industry experience, legal and compliance support, program coverage, international presence and client education.
The ranking is not an official regulatory endorsement. Applicants should independently confirm a firm’s licence or authorised-agent status for the specific country and program being considered.
How Citizenship by Investment Firms Were Assessed
A credible firm should explain both the opportunities and limitations of citizenship programs. Important evaluation factors include:
- Experience with regulated investment migration
- Access to authorised agents and local legal professionals
- Preliminary eligibility and risk assessment
- Due diligence and source-of-funds preparation
- Transparent explanations of government and professional fees
- Support before and after citizenship approval
An Immigration Consultant may coordinate an application, but applicants should also establish whether regulated legal work is handled by an appropriately qualified immigration lawyer or local counsel.
1. Henley & Partners
Henley & Partners is one of the most established international names in residence and citizenship planning. The firm reports more than 25 years of institutional experience and advises private clients as well as governments on the design and operation of investment migration programs.
Its international network and government-advisory background make it relevant for investors comparing several citizenship and residence options. Henley & Partners also publishes research covering passport strength, global mobility and private wealth migration.
2. Saad Ahsan Residency and Citizenship
Saad Ahsan Residency and Citizenship is an immigration law firm serving applicants from South Asia, the Middle East, Europe, the Caribbean and the United States. The firm reports more than 20 years of experience, over 12,000 successful immigration clients and more than ten global offices. The office locations include Pakistan, Dubai, Karachi, and Portugal.
An important distinction is the firm’s program-specific authorization. Saad Ahsan Immigration Law Firm appears on the official list of Authorised CBI Agents published by the Dominica Citizenship by Investment Unit. Dominica states that applications can only be submitted to its CBI Unit through an authorised agent.
Saad Ahsan is also included on the official Licensed Agents List maintained by the Nauru Program Office for the Nauru Economic and Climate Resilience Citizenship Program.
These official listings provide independently verifiable evidence of the firm’s authorization to represent applicants under the respective citizenship programs. Its broader services cover Caribbean and Pacific citizenship options alongside European and Gulf residency routes.
3. Arton Capital
Arton Capital provides citizenship and residency planning services to internationally mobile individuals and families. Its work covers private-client advisory as well as cooperation with government agencies on the development and implementation of investor programs.
The firm focuses on personalised mobility planning rather than presenting citizenship as a standalone passport transaction. This approach may suit investors who need to consider business activity, family relocation and long-term residence alongside a citizenship application.
4. CS Global Partners
CS Global Partners is a London-headquartered advisory and government-marketing firm established in 2012. It works in citizenship by investment and maintains operations across the Middle East, Africa and Asia.
The company is known for its involvement with governments operating investment citizenship programs. Its private-client services include application preparation and coordination with Citizenship by Investment Units.
5. Harvey Law Group
Harvey Law Group is an international law firm founded in 1992. It advises private clients, families and businesses on citizenship and residency by investment across the Caribbean, Europe, Asia-Pacific and the Americas.
Its legal structure distinguishes it from consultancies that primarily operate as marketing or referral businesses. The firm states that its services include eligibility reviews, due diligence support, application preparation, immigration compliance and cross-border legal advice.
6. Latitude Group
Latitude Group has operated in residence and citizenship by investment since 2013. The company reports 12 international offices and more than 7,500 clients, supported by professionals with cross-jurisdictional investment migration experience.
Latitude advises private clients while also providing strategic consulting to governments. Its citizenship services include program comparison, investment guidance and application coordination.
7. Immigrant Invest
Immigrant Invest states that it has provided investment migration services since 2006. The firm operates as a government-licensed agent in jurisdictions where authorisation is legally required.
Its service model includes preliminary due diligence, legal and compliance analysis, document preparation and application support. The firm publishes information on its licences for programs in the Caribbean, Europe, Vanuatu and São Tomé and Príncipe, helping applicants verify program-specific credentials.
8. Global Citizen Solutions
Global Citizen Solutions provides citizenship, residency and relocation planning. Its website reports serving more than 10,000 global clients across 20 nationalities.
The company combines program advisory with relocation support and research on passports, residency rights and international mobility. It may be considered by applicants who want to compare citizenship by investment with Golden Visas, passive-income visas and entrepreneur routes.
9. Astons
Astons provides citizenship and residency planning, investment structuring, legal processing and post-approval assistance. The firm reports more than 35 years of experience, eight offices and a portfolio covering over 15 programs.
Its citizenship practice includes Caribbean, Pacific, African and other international options. Astons also states that it holds authorised or partner status for selected programs, which applicants should verify for their chosen jurisdiction before proceeding.
10. Migrate World
Migrate World was established in 2007 and provides investment migration services across the European Union, the Caribbean, the Middle East and North America. Its services include citizenship, residency and related legal support.
The company publishes program comparisons and educational resources for applicants assessing investment amounts, timelines and family eligibility.
How to Choose a Citizenship by Investment Consultancy
The top immigration consultants should not promise guaranteed citizenship or unusually fast approval. Final decisions remain with the government, not the advisory company.
Before appointing an Immigration Consultancy, investors should request written information covering the firm’s legal identity, authorisations, professional fees, refund terms, data-protection procedures and the parties responsible for holding or transferring investment funds.
Applicants comparing immigration and visa consultants should also confirm whether the proposed program is currently accepting their nationality and whether the firm can legally submit applications to the relevant government authority.
Frequently Asked Questions
Can a consultant guarantee citizenship approval?
No. A consultant can prepare and coordinate an application, but only the relevant government can approve citizenship.
Is every immigration firm authorised to submit citizenship applications?
No. Several countries require applications to be submitted through licensed or authorised agents. The applicable rules should be checked with the program’s official government unit.
Should investors choose the largest company?
Not necessarily. International scale can be useful, but regional knowledge, communication, legal accountability and experience with the applicant’s nationality may be equally important.
A responsible selection process should therefore compare credentials, service scope and compliance procedures rather than relying only on advertising or search-engine rankings.
