Every citizenship by investment (CBI) program, golden visa and the US EB-5 visa asks the same core question: where did this money come from? Applicants have to show that the funds they invest were earned lawfully and that they can follow the money, step by step, from where it was earned to the account that receives the investment.
In practice, programs and the banks and agents that serve them run two related checks. Source of funds looks at the specific money being invested. Source of wealth looks at how the applicant built their overall net worth. A file can pass one and stall on the other.
This guide explains both checks, the documents typically used for each kind of money, and the rule changes that are making the checks stricter in 2026 and 2027.
Key takeaways
- Source of funds covers the money you invest; source of wealth covers how you accumulated your assets. Most programs look at both.
- The test is usually lawful origin plus a clear paper trail. Large unexplained transfers, cash deposits and third-party payments are the most common problems.
- For US EB-5 petitions filed on or after May 14, 2022, applicants must provide personal tax returns for the past seven years and identify everyone who transfers investment funds into the United States.
- From July 10, 2027, the EU's Anti-Money Laundering Regulation requires firms that serve residence-by-investment applicants to collect extra source of funds and source of wealth information.
- Gifts, loans and crypto can often be used, but each needs its own evidence, sometimes including documents from the donor or lender.
Source of funds vs source of wealth
The two terms come from banking compliance and are now standard in investment migration. They answer different questions, so the evidence differs too.
| Source of funds | Source of wealth | |
|---|---|---|
| Question | Where does this specific money come from? | How did this person build their total net worth? |
| Scope | The amount being invested and the transfers that carry it | Career, businesses, investments, inheritances, other assets |
| Typical evidence | Bank statements, sale contracts, dividend records, transfer confirmations | Employment history, company records, tax returns, property registers, estate documents |
| Common red flags | Unexplained deposits, cash, payments from unrelated third parties | Wealth that does not fit the declared career or income |
A typical example: an applicant invests US$250,000 that came from selling an apartment. Source of funds is the sale contract and the bank statement showing the proceeds arriving. Source of wealth asks how the applicant could afford the apartment in the first place, which may lead back to years of salary records or a business sale.
Why programs check so closely
Investment migration programs are an obvious target for anyone who wants to move illicit money, escape sanctions or buy a new identity. A joint 2023 report by the Financial Action Task Force and the OECD on the misuse of citizenship and residency by investment programs found that weak checks on the origin of money were among the main vulnerabilities.
Governments respond in different ways. In the United States, the law says invested capital must be obtained through lawful means, and assets acquired unlawfully do not count as capital at all. The USCIS Policy Manual requires EB-5 investors to prove lawful source by a preponderance of the evidence and to document the path of the funds.
In the Caribbean, the European Commission's 2026 letters to the five CBI states asked for reinforced vetting of applicants of all nationalities and the full exclusion of people subject to EU sanctions. Our report on EU pressure on Caribbean CBI covers those talks.
Documents by type of money
No two programs use an identical list, and agents usually provide a checklist for each case. The table below shows the kinds of evidence commonly requested for each source.
| Source of money | Evidence commonly requested |
|---|---|
| Salary and bonuses | Employment letter or contract, payslips, personal tax returns, bank statements showing salary deposits |
| Business profits and dividends | Company financial statements (audited where available), dividend resolutions, corporate tax filings, bank records of the payout |
| Sale of property | Sale contract, title or registry extract, proof of the original purchase, bank statement showing the proceeds |
| Sale of shares or a business | Share purchase agreement, share register before and after, proof of payment received |
| Inheritance | Will, probate or grant of succession, estate accounts, bank record of the distribution |
| Gift | Signed gift deed or declaration, proof of relationship, the donor's own source of wealth evidence |
| Loan | Loan agreement, lender details, security documents, bank record of the advance |
| Investments and crypto | Broker and exchange statements, wallet transaction histories, tax reports showing realized gains |
Salary and business income
Salary is usually the easiest source to prove because it leaves a regular paper trail. Business income is harder. Programs often want to see that profits were declared to a tax authority and properly distributed, not simply withdrawn from a company account. Owners of cash-heavy businesses or private companies without audited accounts may need extra documents, such as an accountant's report.
Gifts and family money
Gifts between relatives are common, and many programs accept them. The catch is that the donor's money is then examined too. Under USCIS policy for EB-5 petitions filed on or after May 14, 2022, gifted funds are allowed if they were given in good faith and not to get around the lawful-source rules, and the applicant must submit the same kind of source evidence for the donor.
Loans
Borrowed money is treated cautiously. EB-5 allows loans for petitions filed on or after May 14, 2022, on the same good-faith basis, and a lender that is not a bank must also show its own lawful source. Several CBI programs restrict arrangements in which an applicant pays only part of the stated minimum, or in which a third party finances the investment, so the program rules for each country matter.
Crypto assets
Crypto wealth is no longer an automatic barrier, but it brings extra steps. The St Kitts and Nevis Citizenship Unit says it accepts cryptocurrency as a partial source of wealth, but requires separate proof of wealth that does not come from crypto and charges additional due diligence fees. Exchange statements, wallet records and tax filings that show when and how gains were realized are the usual evidence. Our guide to the Crypto-Asset Reporting Framework explains how tax authorities now receive data on crypto accounts.
Tracing the path of the money
Proving that the money exists is not enough. Programs want to see each transfer that moved it from the place it was earned to the account that receives the investment. Each hop is a point where the trail can break.
A clean trail usually looks like this: income arrives in the applicant's account, it builds up over time or comes from a single documented event such as a sale, and it then moves from that account to the escrow account, developer or government fund. Transfers through relatives' accounts, money changers or several countries can all be legitimate, but each one needs its own explanation.
Programs build checkpoints into the payment itself. Saint Lucia's regulations, for example, require any outstanding balance on an approved real estate purchase to be placed in an approved irrevocable escrow. For EB-5 petitions filed on or after May 14, 2022, USCIS asks for the identity of every person who transfers investment funds into the United States.
Banks run their own checks at the same time. A bank that receives a large international transfer will apply its own anti-money laundering rules, which is one reason applicants are sometimes asked for the same document twice. Our article on bank accounts for digital nomads explains why banks ask these questions.
Stricter rules in 2026 and 2027
Three changes are raising the bar.
The EU Anti-Money Laundering Regulation. Regulation (EU) 2024/1624 applies from July 10, 2027. It makes investment migration operators, the firms that help non-EU nationals obtain residence in exchange for investment, subject to EU anti-money laundering duties. Under Article 41, banks and other obliged entities must apply enhanced due diligence to non-EU customers who are applying for investment-based residence. That includes extra information on source of funds and source of wealth, senior management approval and closer monitoring. The regulation's recitals say it does not cover investor citizenship schemes, which the EU considers incompatible with EU citizenship.
Caribbean reforms. The five Eastern Caribbean CBI states have strengthened due diligence, set a regional regulator, the Eastern Caribbean Citizenship by Investment Regulatory Authority, and introduced interviews. Dominica, for example, now requires a mandatory interview for every applicant aged 16 or over.
US EB-5. The EB-5 Reform and Integrity Act of 2022 extended the tax return look-back to seven years and added the requirement to identify everyone who transfers funds into the US. Fees have also risen, as our report on the EB-5 fee increase explains.
Why source of funds files stall
Most delays come from gaps, not from wrongdoing. Common examples include:
- Wealth earned long ago with no surviving records, such as an early business sold decades earlier.
- Cash deposits or cash-based businesses with limited documentation.
- Family transfers without a written gift deed or proof of the relationship.
- Declared income that does not match the assets or the size of the investment.
- Payments made by a company or a third party on the applicant's behalf.
- Documents that are not translated, notarized or apostilled as the program requires.
Due diligence firms compare these records against each other. A gap between declared salary and the size of a bank balance will usually prompt questions, even if the explanation is entirely lawful. In general, applicants with complete records that tell a consistent story move through the process faster.
The same records serve other purposes too. Investment migration often goes alongside a move of tax residence, and every one of these transfers may be visible to tax authorities through automatic exchange under the Common Reporting Standard.
Frequently asked questions
What is the difference between source of funds and source of wealth?
Source of funds is the origin of the specific money you invest, such as a property sale or a dividend. Source of wealth is how you built your overall net worth over time. Programs and banks usually check both, because a lawful transfer can still come from wealth that needs explaining.
Can I use a gift from a family member to invest?
Often, yes. Most programs accept gifts if they are documented with a gift deed or declaration, proof of the relationship, and evidence of the donor's own lawful source of wealth. Programs look closely at transfers between relatives, so the donor's records matter as much as the applicant's.
Can I use borrowed money for a golden visa or citizenship by investment?
It depends on the program. EB-5 permits loans given in good faith, with lawful-source evidence for non-bank lenders. Many CBI programs restrict financing arrangements, especially ones that let applicants pay less than the stated minimum. The rules of each program decide whether a loan qualifies.
Can cryptocurrency be used as a source of funds?
Some programs accept it with extra checks. St Kitts and Nevis accepts crypto as a partial source of wealth but asks for separate non-crypto wealth evidence and charges extra due diligence fees. Exchange records, wallet histories and tax filings are the usual proof.
How far back do I need to document my money?
There is no single rule. EB-5 asks for seven years of personal tax returns for petitions filed on or after May 14, 2022. Source of wealth checks can reach further back, to the event that created the wealth, such as the sale of a business years earlier.
Important: This article is general information, not tax, legal or financial advice. Rules change often and depend on your personal circumstances. Speak with a qualified professional in each relevant country before you act.