Source-of-funds documents help explain where the money for a particular transfer came from. A bank balance shows that money exists; it may not explain the transaction that produced it. The practical task is to connect the origin, the account receiving those proceeds and the proposed transfer.
Use this guide to organise genuine records. It does not set a universal document checklist, transfer threshold or approval deadline. The institution requesting evidence decides what it needs for the particular review.
Start with the provider’s actual request
Wise states that it may require evidence of the origin of money for a large transfer and lists examples such as a bank statement, an investment or savings certificate, or a solicitor’s letter concerning inheritance. These examples are not a guarantee that one document will satisfy every review. Follow the request associated with your account.
Ask whether the provider wants proof of the origin, proof of money movement, or both. Check required dates, account-holder names, language, format and whether all pages are needed. Use the authenticated upload area where available; an unsolicited message claiming to be an urgent compliance check deserves independent verification.
Map the money rather than piling up files
| Illustrative origin | Connection to establish | Question for the reviewer |
|---|---|---|
| Employment savings | Income records and the account accumulating funds | Which period and documents are required? |
| Sale proceeds | Sale record and the matching incoming payment | Which completion or settlement evidence is accepted? |
| Investment withdrawal | Holding or redemption record and credit to account | Which statement identifies the redeemed funds? |
| Inheritance | Relevant estate evidence and payment trail | Which official or professional confirmation is needed? |
The table is a planning aid, not a list of documents accepted by every bank. Mixed funds can require explanation of more than one source. Do not label an entire balance as salary if it also contains sale proceeds or other money.
A small evidence index
Illustrative example: a person plans to transfer savings plus proceeds from selling an asset. Create a one-page index with two lines: the savings component and the sale component. For each, identify the supporting file, the relevant date and the matching incoming credit. The index helps a reviewer find evidence but does not replace the underlying records.
Use neutral file names such as “sale-completion-record” or “statement-relevant-period”. Avoid putting a passport number or full account identifier in a file name that may appear in email previews. Keep originals and provide copies in the requested format.
Explain mismatches accurately
Different names, joint accounts, currency conversions or intermediate accounts can interrupt the apparent trail. Write a factual explanation identifying each step and attach evidence the reviewer requests. Do not edit a document to make an inconsistency disappear. If a record is wrong, obtain a corrected version from its issuer.
Ask before redacting anything the provider needs to validate. Redaction can protect irrelevant private information, but removing required names, dates or transactions may make a document unusable. If the request seems broader than expected, ask why that information is needed and whether an alternative record is acceptable.
Keep the transfer plan realistic
Leave time for checks before a property completion, tuition deadline or other important payment. Ask about the current status and outstanding evidence rather than demanding a universal release time. Splitting a payment to avoid checks is not a sound response to a legitimate verification request.
Keep a log of what was submitted, through which channel and the case reference. When asked for another file, relate it to the existing case instead of starting several inconsistent explanations. Our account application checklist covers eligibility separately, while the transfer-cost guide helps compare the eventual payment.
Source and scope
Source checked on 7 October 2026: Wise: proof of where money comes from. The planning examples in this article are illustrative. Product terms, country rules and individual circumstances can change; use the relevant provider’s current instructions.
Illustrative featured photo: Christin Hume / Unsplash.