Source of funds and source of wealth
Two different bank questions and how to prepare verifiable answers to both
Updated 3 August 2026 · 8 min read
A bank's refusal citing an "unclear origin of funds" rarely indicates suspicion of wrongdoing. More often it means the client answered the wrong question - confirming a specific payment without explaining how the wealth was formed in the first place. Source of funds and source of wealth are different requirements, and preparation for each follows a different logic.
The guide sets out what is actually accepted as confirmation: which documents settle the question of the origin of money in a transaction, and which settle the history of capital formation over decades. Complex cases are addressed: inheritance without documentation, income earned in a jurisdiction with closed registries, a business sale with no public record, and old assets acquired before current requirements existed.
This material does not replace advice from a lawyer or tax adviser and does not guarantee that a specific bank will approve a transaction.
Who this material is for
- for owners before opening an account abroad
- for private banking clients
- for participants in investment and migration programs
- for lawyers preparing explanations for a bank
Questions covered in this guide
- how source of funds differs from source of wealth
- which documents actually settle the question
- how to explain capital originating from a jurisdiction with closed registries
- what to do when documentation for old episodes is missing
- how to build a coherent timeline of capital formation
Contents
- Two bank questions and why they are confused
- Confirming the origin of transaction funds
- Timeline of wealth formation
- Complex cases: inheritance, old assets, closed jurisdictions
- Common reasons for refusal
- How to prepare in advance, not after the request
BLACKFILE does not receive banking secrecy information and does not prepare tax opinions. Requirements and the decision are determined by the bank itself
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