Due Diligence is a mandatory stage of virtually every residency and citizenship by investment program. Regardless of the investment amount, governments will assess whether an applicant poses financial, legal, security, or reputational risks before approving a residence permit or passport. Authorities examine the origin of an applicant’s wealth, verify the source of investment funds, review business activities, analyse media coverage, screen sanctions databases, and assess overall reputation. In many programs, Due Diligence has become the single most important factor determining whether an application succeeds or fails.
This guide explains what governments check, why applications are refused, how long Due Diligence takes, and how investors can prepare before applying.
Many investors assume that Due Diligence consists primarily of providing a police certificate and proving that they possess the funds required for the investment. In reality, modern Due Diligence is far more extensive and may involve reviewing:
This approach has become increasingly important as investment migration programs face greater international scrutiny. Countries offering residency and citizenship by investment are expected to maintain robust compliance standards and demonstrate that approved applicants have undergone thorough screening.
As a result, Due Diligence today often involves multiple layers of review. Government authorities may work alongside independent compliance firms, anti-money laundering specialists, sanctions screening providers, and international databases to evaluate each applicant’s profile. In many cases, applicants are also subject to Enhanced Due Diligence (EDD) — a more comprehensive level of screening designed to identify potential legal, financial, sanctions, or reputational risks.
The objective is not simply to identify criminal conduct. Authorities are attempting to build a complete picture of the applicant’s background, business activities, and reputation in order to assess whether granting residency or citizenship would be appropriate.
Governments use Due Diligence to protect national security, prevent financial crime, comply with international standards, and safeguard the reputation of their investment migration programs.
From a government’s perspective, investment migration programs bring economic benefits, attract foreign capital, and support investment into key sectors of the economy. However, they also create responsibilities. Without proper screening, such programs could potentially be used by individuals seeking to launder money, evade sanctions, conceal assets, or obtain residency or citizenship for illegitimate purposes.
As a result, governments use Due Diligence to:
Several factors have contributed to the significant strengthening of Due Diligence standards over the past decade.
International organisations, regulators, and financial institutions increasingly expect governments to apply robust compliance standards when granting residency or citizenship to foreign investors.
Authorities therefore focus heavily on:
The objective is to ensure that investment migration programs cannot be used to legitimise illicitly obtained assets.
Sanctions screening has become a central component of modern Due Diligence, particularly in recent years as sanctions regimes have expanded globally.
Governments seek to identify:
Failure to conduct effective sanctions screening can create significant legal, diplomatic, and reputational risks for a country.
Governments are increasingly aware that a single controversial approval can attract international attention and damage confidence in an investment migration program.
As a result, authorities frequently assess:
Even where no criminal conduct exists, governments may still evaluate whether approving an applicant could negatively affect the country’s reputation or the credibility of its residency and citizenship programs.
Ultimately, Due Diligence exists to ensure that investment migration programs remain credible, secure, and sustainable over the long term.
Yes. Even financially successful applicants can be refused if governments identify concerns relating to source of wealth, criminal history, sanctions exposure, reputation, or inconsistencies in the application.
One of the biggest misconceptions in investment migration is that approval depends primarily on meeting the investment requirement.
In reality, an applicant may satisfy every financial criterion and still fail Due Diligence. This is because governments are assessing risk, not simply wealth.
Governments generally take a holistic approach when assessing applications. Rather than focusing on a single factor, they evaluate the overall risk profile of the applicant.
Common issues that may result in enhanced Due Diligence or refusal include:
Importantly, many refusals do not arise because an applicant has done something illegal. Instead, they occur because authorities cannot establish a sufficiently clear and credible picture of the applicant’s background.
Transparency therefore plays a critical role throughout the process.
Applicants who proactively disclose relevant information and provide supporting explanations are often in a stronger position than those who attempt to minimise or conceal potential concerns.
In many cases, yes. A professional pre-screening assessment can help identify potential Due Diligence concerns before a formal application is submitted.
One of the most common mistakes investors make is assuming that Due Diligence begins only after government review starts.
In reality, many potential issues can often be identified much earlier.
For example, an applicant may have been involved in historical litigation, received a visa refusal years ago, or become the subject of media reports that no longer accurately reflect their current circumstances. Similarly, an entrepreneur may have accumulated substantial wealth through legitimate business activities but lack documentation supporting certain historical transactions.
These issues do not necessarily prevent approval. However, identifying them before submission provides an opportunity to prepare supporting evidence, gather additional documents, and address potential concerns proactively.
Astons offers preliminary Due Diligence assessments designed to identify potential risks before significant time and capital are committed to an application.
Our specialists review the applicant’s background, source of wealth documentation, business activities, immigration history, and other relevant factors to assess how the case may be viewed during formal government review.
Depending on the applicant’s profile, this assessment may identify:
Where potential concerns are identified, our team works with clients to address them proactively and determine the most appropriate residency or citizenship strategy.
This process can be particularly valuable for entrepreneurs, high-net-worth individuals, Politically Exposed Persons (PEPs), applicants with multiple citizenships, and families applying together.
By conducting a preliminary review before submission, investors can often approach the formal Due Diligence process with greater confidence and a clearer understanding of what to expect.
Governments examine an applicant’s identity, financial history, criminal background, immigration history, business activities, family connections, sanctions exposure, and overall reputation.
Many investors expect Due Diligence to focus primarily on criminal records. While criminal screening remains important, modern Due Diligence is much broader and increasingly focuses on financial transparency and risk assessment.
Authorities are not simply trying to determine whether an applicant has committed a crime. They are attempting to understand the applicant’s overall profile and whether approving the application could expose the country to legal, financial, political, or reputational risks.
Authorities must establish that the applicant is accurately represented and that all information provided is complete and consistent.
This review may include:
For applicants with multiple citizenships or extensive international mobility, this stage may require additional supporting documentation.
Even relatively minor discrepancies can generate questions.For example, different spellings of a name across documents, inconsistent addresses, or undeclared citizenships may trigger requests for clarification.
Not all investment migration programs require applicants to provide detailed Source of Funds (SoF) and Source of Wealth (SoW) documentation. The scope of financial verification varies between jurisdictions and often depends on the applicant’s individual circumstances. However, where requested, governments use this information to verify the legitimacy of an applicant’s wealth and the funds used for the qualifying investment.
Source of Wealth explains how an individual accumulated their overall wealth over time, for example through business ownership, employment, investments, inheritance, or the sale of assets.
Source of Funds refers to the specific money being used for the qualifying investment and how those funds were obtained.
Where applicable, supporting documentation may include:
This may include:
Importantly, a previous visa refusal does not automatically result in rejection. However, governments generally expect such matters to be disclosed voluntarily. Failure to disclose relevant immigration history can create more concern than the underlying event itself.
Authorities may review:
The purpose is not to penalise entrepreneurial activity. Rather, governments seek to understand the nature of the applicant’s business interests and identify any potential compliance concerns. Complex ownership structures are common among successful investors, but they often require additional explanation and documentation.
Most programs also conduct background checks on eligible family members included in the application.
Depending on the jurisdiction, this may include:
Governments generally want to ensure that all applicants meet the program’s eligibility and compliance requirements. In some cases, the background of a dependent may generate additional questions that affect the overall application.
Governments use criminal record checks, sanctions screening, adverse media reviews, and independent investigations to determine whether an applicant presents legal, security, compliance, or reputational risks.
Criminal background screening usually begins with police clearance certificates from countries where the applicant has lived. However, authorities rarely rely solely on documents provided by the applicant. Most jurisdictions supplement these certificates with searches of international law enforcement databases, court records, and other sources designed to identify issues that may not appear in a standard police certificate.
Governments generally focus on offences involving:
Not every historical conviction automatically results in refusal. Authorities usually consider the nature of the offence, how long ago it occurred, and whether it creates an ongoing risk.
Sanctions compliance has become one of the most important parts of modern Due Diligence. Virtually all reputable investment migration programs screen applicants against major international sanctions lists, including those maintained by:
Governments increasingly look beyond direct sanctions exposure. Even where an applicant is not personally sanctioned, authorities may examine relationships with sanctioned companies, business partners, beneficial owners, or close associates.
As a result, corporate structures and ownership arrangements often receive detailed scrutiny during the review process.
Politically Exposed Persons (PEPs) are individuals who currently hold or previously held prominent public positions, as well as certain family members and close associates.
Examples include:
Being classified as a PEP does not prevent an applicant from obtaining citizenship or residency by investment. However, governments generally apply enhanced Due Diligence because public office may increase the risk of corruption, influence, or unexplained wealth.
Governments increasingly review publicly available information to determine whether approving an applicant could create future reputational risks for the country. This process often includes searches across international news databases, regulatory announcements, court records, and industry publications.
Common areas of review include:
Importantly, adverse media findings do not need to involve criminal conduct. An entrepreneur may have a clean criminal record but still attract additional scrutiny because of historical disputes, allegations made in the press, or controversies involving former business ventures.
Taken together, criminal, sanctions, and reputation screening reflect the broader purpose of investment migration Due Diligence. Governments are not simply determining whether an applicant has broken the law. They are assessing whether granting residency or citizenship could expose the country to legal, financial, political, or reputational risks in the future.
Most applications fail Due Diligence because governments cannot establish a clear, credible, and well-documented picture of the applicant’s background.
Many investors assume that only individuals with criminal records fail Due Diligence. In reality, refusals are often linked to documentation issues, inconsistencies, lack of transparency, or unresolved compliance concerns rather than outright illegal activity.
Governments are expected to make risk-based decisions. If authorities cannot fully understand how an applicant accumulated wealth, where investment funds originate, or whether potential reputational concerns have been adequately addressed, they may decide that the risk is too high to approve the application.
In some cases, authorities may request additional clarification if the information provided is not sufficient to establish a clear understanding of how an applicant’s funds was accumulated.
Such requests do not necessarily indicate a problem with the application. They are often part of the standard due diligence process and simply provide applicants with an opportunity to explain certain aspects of their financial background in greater detail.
Examples include:
A single inconsistency rarely causes refusal. However, multiple discrepancies can raise concerns about the accuracy and reliability of the overall application.
From a government’s perspective, credibility is critical. If reviewers begin questioning one aspect of the file, they are likely to scrutinise the remainder of the application more closely.
Authorities regularly review international media databases looking for references to applicants, their businesses, and close associates. Even where allegations never resulted in criminal charges, governments may still consider whether they create reputational concerns.
Examples that may trigger additional review include:
Not every media report creates a problem. Authorities generally assess the credibility of the source, the seriousness of the allegations, and whether the issue remains relevant today.
Governments may refuse applications where they identify:
In some cases, concerns arise not because the applicant is sanctioned, but because their business activities create indirect exposure that authorities consider problematic.
Governments recognise that many applicants have complex personal and professional histories. Previous visa refusals, business disputes, civil litigation, or regulatory investigations do not automatically disqualify an applicant.
However, failing to disclose such matters can significantly damage credibility. If authorities discover information independently that should have been disclosed voluntarily, they may view the omission as a more serious concern than the underlying issue itself. For this reason, transparency is one of the most important principles in investment migration.
A refusal does not necessarily prevent an individual from pursuing other immigration opportunities in the future. However, most residency and citizenship programs ask applicants whether they have previously been refused by another jurisdiction.
As a result, a refusal often becomes part of an applicant’s long-term immigration history and may need to be disclosed in future applications.
This is one reason why proper preparation before submission is so important. Addressing potential concerns proactively is often far easier than explaining a refusal later.
Due Diligence fees vary by jurisdiction and are usually separate from government processing fees, legal fees, and investment requirements.
Most governments charge dedicated Due Diligence fees to cover the cost of background investigations, compliance reviews, and security screening. These fees are generally non-refundable because they cover the cost of conducting the investigation itself, regardless of the final outcome.
The exact amount depends on the program, but several factors typically influence overall costs:
In citizenship by investment programs, Due Diligence fees are often charged separately for each adult applicant. Some jurisdictions also apply reduced fees for dependents over a certain age.
Applicants should remember that Due Diligence costs extend beyond government fees. Additional expenses may include obtaining police certificates, certified translations, apostilles, legalisation of foreign documents, corporate records, tax certificates, and professional assistance with application preparation.
The figures below may vary depending on family composition, age of dependants, and enhanced Due Diligence requirements.
| Program | Due Diligence Fee |
|---|---|
| Antigua and Barbuda | From $8,500 |
| Dominica | From $7,500 |
| Grenada | From $5,000 |
| Saint Lucia | From $8,000 |
| Vanuatu | $5,500 |
| Nauru | $6,000 |
Fees are subject to change and should be confirmed at the time of application.
Due Diligence is a multi-stage process that usually begins before an application is submitted and continues until a final approval or refusal decision is made. In most residency and citizenship by investment programs, the process takes approximately 3–6 months, although complex cases may take considerably longer.
Many investors imagine Due Diligence as a single government review conducted after the application is filed. In reality, the process involves multiple stages and often includes not only government authorities but also licensed agents, compliance departments, independent Due Diligence providers, and international databases.
The exact procedure varies by jurisdiction, but most programs follow a broadly similar structure.
The first stage often takes place before a formal application is submitted.
Government-licensed agents are generally required to conduct Know Your Client (KYC) checks and evaluate whether an applicant is likely to satisfy the program’s compliance requirements.
Know Your Client (KYC), also known as Know Your Customer, is the initial verification process used to confirm an applicant’s identity and assess potential compliance risks before proceeding with an investment migration application. KYC checks typically involve verifying personal information and supporting documents, screening for sanctions and Politically Exposed Person (PEP) status, and conducting preliminary source of funds checks to identify potential risks at an early stage.
At Astons, we conduct an initial assessment of each case before proceeding with an application. Depending on the applicant’s profile, this review may identify potential issues relating to source of funds, previous immigration history, sanctions exposure, adverse media findings, or documentation gaps.
If concerns are identified, they can often be addressed proactively through additional evidence, explanations, or, in some cases, by selecting a more suitable program.
Once the preliminary review is completed, the applicant begins gathering supporting documentation.
The exact list depends on the chosen program and the applicant’s circumstances, but typically includes identity documents, police certificates, financial records, corporate documents.
Many documents also require translation, notarisation, legalisation, or apostille before they can be submitted.
After the application is submitted, the government authority responsible for the program begins the formal Due Diligence process.
At this stage, reviewers typically assess:
The purpose is to determine whether the applicant meets the program’s legal and compliance requirements and whether approving the application would create unacceptable risks.
This is usually the longest stage of the process.
Additional document requests are extremely common and should not be viewed as a sign that something is wrong.
In many cases, authorities simply require further clarification before they can complete their assessment.
For example, they may ask for:
The speed with which these requests are addressed often has a direct impact on overall processing times.
Many jurisdictions supplement their own investigations by working with specialist Due Diligence providers. These firms conduct independent reviews using international databases, public records, litigation records, sanctions screening systems, and adverse media sources.
Depending on the jurisdiction, authorities may also conduct checks through organisations such as Interpol, Europol, and other international law enforcement channels. In some programs, particularly citizenship by investment programs, multiple independent reviews may take place before a final decision is made.
Some jurisdictions require applicants to attend an interview as part of the Due Diligence process. While interviews are not universal, they have become increasingly common in recent years as governments seek additional verification of the information provided in applications.
Interviews are usually conducted remotely and may cover topics such as:
The objective is generally to confirm information already provided rather than conduct an adversarial examination.
Once all investigations have been completed, the relevant authority reviews the Due Diligence findings and reaches a decision. If the application is approved, the applicant proceeds to the final stages of the program, which may include completing the investment, obtaining residency documents, or receiving citizenship certificates and passports. If concerns remain unresolved, the application may be delayed or refused.
Many investors assume Due Diligence ends once approval is granted. In some programs, however, compliance obligations continue after approval. Governments may monitor applicants for sanctions exposure, criminal investigations, or other developments that could affect their eligibility.
Certain jurisdictions also reserve the right to revoke residency or citizenship if it is later discovered that approval was obtained through misrepresentation, concealment of material information, or fraudulent documentation.
Effective due diligence preparation should begin well before a formal application is submitted. While the exact requirements vary between jurisdictions and programs, early preparation can significantly reduce processing delays, minimise requests for additional information, and help ensure a smoother application process.
Preparation typically involves reviewing personal and professional background information, assessing potential compliance considerations, organising supporting documentation, and identifying any areas that may require additional clarification during government review. Depending on the applicant’s profile, this may include reviewing business activities, immigration history, family documentation, and the availability of financial records.
Many delays in investment migration applications arise not because applicants fail to meet the program requirements, but because documentation is incomplete, information provided is inconsistent, or additional explanations are required during the due diligence process.
In general, the strongest applications present a clear, consistent, and well-documented picture of the applicant’s background. Early preparation and professional guidance can help investors understand potential requirements in advance, address any issues proactively, and approach the formal due diligence process with greater confidence.
Due Diligence has become the foundation of modern investment migration. Governments no longer focus solely on whether an applicant can meet the investment requirement. Instead, they seek to understand how wealth was accumulated, where investment funds originate, whether reputational concerns exist, and whether granting residency or citizenship could expose the country to legal, financial, security, or political risks.
As a result, successful applications depend not only on financial capacity but also on transparency, preparation, and the ability to provide a well-documented explanation of one’s background and wealth.
For investors, the most effective approach is to begin preparing long before an application is submitted. Identifying potential concerns early, organising documentation, and understanding the expectations of government reviewers can significantly reduce delays and improve the overall likelihood of a successful outcome.
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Susanna Uzakova
Senior Citizenship & Residency Advisor
Suzanna Uzakova is an international specialist and a leading expert at the company in the field of investment immigration.
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