KYC Documents for an Offshore Account: The 2026 Checklist
Which KYC documents do you need for an offshore account – and what do banks look for in their review? What matters is not the number of documents but whether they fit together. This checklist shows which documents banks typically require from individuals and companies, how to prove the source of funds and what to watch out for with copies, translations and apostilles.
- ✛KYC documents for an offshore account prove identity, residence, occupation and source of funds.
- ✛Banks distinguish between source of funds (this money) and source of wealth (your total assets).
- ✛Proof of address is usually no older than three months.
- ✛Many countries require certified copies with an apostille – clarify in advance.
- ✛Complete documents ease the review but do not guarantee account opening.
What the bank checks with KYC documents
KYC stands for «Know Your Customer». When opening an account, every bank must clearly identify the client, establish the beneficial owner and understand the planned business relationship. The basis is the FATF recommendations and national anti-money laundering laws – in Switzerland the AMLA and CDB 20, in the EU in future the Anti-Money Laundering Regulation (AMLR), which applies from July 2027.
At their core, KYC documents for an offshore account answer four questions:
- 1Who are you? Identity and nationality.
- 2Where do you live and where are you taxable? Residence and tax residency.
- 3Where does the money come from? Occupation, income, assets and origin of the specific deposit.
- 4What will you use the account for? Expected transactions, volume, countries and counterparties.
There is no universal mandatory list. Which documents are required depends on the bank, country, account type and your profile. This checklist is meant as guidance.
Checklist for individuals
| Purpose | Typical documents | What to watch |
|---|---|---|
| Identity | Valid passport, sometimes also a national ID card | Valid for at least six months; all pages with data and signature |
| Residence | Utility bill, bank statement, registration certificate, tax assessment | Usually no older than three months; name and address identical to the application |
| Tax status | CRS self-certification with tax identification number (TIN); W-8BEN or W-9 for FATCA | State all countries of tax liability |
| Occupation and income | Employment contract, salary statement, tax return, accounts of your own company | Consistent with the application |
| Source of funds | Sale agreement, proof of inheritance, dividend resolution, bank statements | Complete paper trail up to the deposit |
| References | Bank reference letter, sometimes a professional reference | Only at certain banks and in certain countries |
Politically exposed persons (PEPs) or their relatives must disclose this; the bank then applies enhanced due diligence.
Checklist for companies
| Purpose | Typical documents | What to watch |
|---|---|---|
| Company | Commercial register extract, articles of association, certificate of incorporation | Current extract, usually no older than three to six months |
| Officers and representation | List of directors, signing authorities, board resolution on account opening | Identification of all authorised signatories |
| Ownership and control | Share register, organisational chart down to the natural person, Form A or K (Switzerland) | All persons with 25 % or more ownership or control |
| Business activity | Business plan or company profile, website, contracts with customers and suppliers | Registered purpose must match actual activity |
| Payment profile | Expected incoming and outgoing payments by volume, currency and country | Specific rather than «internationally active» |
| Source of funds and financials | Annual accounts, capital contribution, statements of existing company accounts | For new companies: origin of the share capital |
| Tax status | CRS self-certification for entities, W-8BEN-E | Classification as active or passive NFE |
In multi-tier structures, every level needs the relevant company documents. For preparing a company account, see our guide to the business account in Switzerland.
Source of funds and source of wealth
Most follow-up questions concern the origin of funds. Banks distinguish two levels:
- ✛Source of funds: where does the specific money you deposit or run through the account come from? Example: salary, sale proceeds, dividend.
- ✛Source of wealth: how did your total assets arise? Example: entrepreneurial career, inheritance, property sale.
Prove both with documents matching the actual source and link them into a traceable chain – for example from the sale agreement to the credit on your existing account to the planned transfer. Crypto assets additionally require evidence of acquisition, wallets and exchange.
A short written explanation (source of wealth statement) helps with complex asset situations – provided every statement can be documented.
Copies, translations and apostille
Formal requirements vary greatly by country and bank:
- ✛Certified copies: for remote openings, many banks require copies certified by a notary or a recognised body.
- ✛Apostille: for countries party to the 1961 Hague Convention, the apostille replaces legalisation. It is affixed by the competent authority of the issuing country.
- ✛Translations: documents in a language other than the bank's – usually English – often need a certified translation.
- ✛Validity: certifications and apostilles should usually be no older than three to six months.
Plan time for this. If needed, we handle certifications, apostilles and translations through our documents & legalisation service.
Common reasons for follow-up questions
| Situation | Possible problem | What you can do |
|---|---|---|
| Missing document | Review remains open | Submit the specific document, all pages legible |
| Contradictory information | Names, addresses or company data differ | Explain and document the discrepancy |
| Unclear source of funds | Gaps in the paper trail | Document the missing intermediate steps |
| Outdated documents | Proof of address or register extract too old | Obtain a current version |
| Bank's risk assessment | Profile does not fit the risk policy | Consider another bank or country |
Further typical pitfalls are described in our article on the most common offshore account mistakes. If payments get stuck later, see our article on rejected transfers.
Preparing your dossier in five steps
- 1Define the application type: private or corporate, account type, applicant and beneficial owners.
- 2Create a document list: assign each document to its purpose – available, to be obtained or requiring explanation.
- 3Obtain documents: order from the relevant authorities; plan for certification, apostille and translation.
- 4Quality check: verify issuer, date, validity and legibility; align spellings and addresses.
- 5Organise submission: name files clearly, sort by group and submit via the channel specified by the bank.
Scans should be complete and unaltered, in colour and without reflections. Do not crop pages or redact information.
How SWICOR supports you
SWICOR supports individuals and companies remotely with international account openings – with a personal Swiss contact and fixed flat fees. We compile the KYC documents for your offshore account to match the bank, check the dossier for inconsistencies and coordinate follow-up questions. The bank decides on account opening.
Whether a bank account in Switzerland, in Georgia or in a country outside CRS – the right choice depends on your profile. Our list of non-CRS countries gives an overview.
Have your KYC dossier prepared for your offshore account.
Bank account abroad →Frequently asked questions
Which KYC documents do I need for an offshore account?
Typically a passport, proof of address, CRS self-certification with tax number and evidence of occupation, income and source of funds. Companies additionally need corporate documents, an organisational chart and details of beneficial owners.
Do documents need to be certified or apostilled?
That depends on the bank and country. Certified copies are common for remote openings, often with an apostille for company documents. Clarify requirements before obtaining them.
Can I submit KYC documents digitally?
At many banks, yes – via an online portal or video identification. Some additionally require originals or certified paper copies.
How do I prove the source of my funds?
With documents matching the actual source – such as a salary statement, sale agreement, proof of inheritance or dividend resolution – and bank statements showing the flow of money up to the deposit.
How current must the documents be?
Proof of address usually no more than three months, register extracts and certifications usually three to six months. Passports should still be valid for at least six months.
Which KYC documents does a company need?
Commercial register extract, articles of association, list of officers, board resolution, share register, organisational chart down to the natural person, company profile, payment profile, financial documents and the CRS self-certification for entities.
Do complete documents guarantee account opening?
No. They ease the review, but the bank decides independently based on its risk policy.
Your KYC dossier – complete and consistent
We compile the documents to match the bank, check them for inconsistencies and accompany the account opening remotely.
This article is a general analysis and does not replace individual tax or legal advice. Regulations change; the information reflects the status at the date of publication.