When a bank requests source-of-funds proof for a transfer, first verify the request through the bank's official channel. Then document how the specific money was generated and how it moved into the remitting account. Send the smallest complete evidence set the bank confirms it will accept, without inventing, altering, or hiding material facts.

Key Takeaways:

Source of funds explains the origin of the money used for this transaction, not merely where it was stored.

Verify the request, case number, deadline, secure upload route, and exact questions before sending documents.

Build a short evidence chain from the genuine source through each relevant account to the transfer.

Ask before redacting; preserve names, dates, amounts, account ownership, and transaction references needed to connect the chain.

A compliance review is not proof of wrongdoing, but ignoring it can delay or stop the payment.

This task belongs within a broader banking and records plan for living abroad. It is narrower than identity verification or immigration proof of funds: the bank is trying to understand the provenance of money used for one transfer.

1. Bank requests source-of-funds proof? Verify the request first

Do not reply to an unexpected email, text, or call with bank statements. Open the bank's official app or website yourself, call the number on your card or statement, or visit a verified branch. Ask whether the request is genuine and whether the named employee, team, and case number belong to the bank.

Confirm which transaction is under review, whether you are the sender or recipient, the amount and currency, the deadline, and whether the transfer is pending, held, rejected, or already credited. Ask for the questions and required document categories in writing. “Send proof of funds” is too vague to act on safely.

Confirm the approved delivery route, file formats, maximum sizes, password rules, and whether translated or certified copies are required. Do not send one-time codes, passwords, remote-access permissions, or documents to a newly supplied personal mailbox. If the request itself seems fraudulent, use the separate identity-document protection workflow.

Record the case number, channel, time, contact, and exact request. This creates a reliable boundary if another message later asks for different information or payment to “release” the transfer.

2. Distinguish source of funds from nearby concepts

Source of funds answers: what activity generated the particular money used in this transfer, and how did it reach the remitting account? Saying “it came from my savings account” identifies the last location, not necessarily the source.

Source of wealth is broader. It explains how a person's overall assets or net worth were accumulated. Identity verification proves who you are. Proof of balance shows money exists and may be available. A visa or relocation authority may ask for a minimum balance held for a specified period. Those questions overlap in documents but are not interchangeable.

HM Revenue & Customs guidance for supervised businesses describes source of funds as the provenance of the particular funds, including the activity that generated them, and distinguishes it from the origin of the customer's overall wealth.［1］ That is a UK risk-based compliance example, not a universal consumer checklist or a statement that every bank must request the same evidence.

Ask the bank whether it needs only source of funds, source of wealth as well, the transfer purpose, identity refresh, or beneficiary information. Answer each requested category separately. A large account balance does not prove how this transfer was funded; a detailed life history may be unnecessary when the question is narrow.

3. Build a transaction-specific provenance chain

Write a one-page explanation before collecting files. State the amount and currency, genuine source, date generated, person or entity that paid it, account where it first arrived, any later movement between your own accounts, and the purpose and beneficiary of the reviewed transfer.

Then match each link to evidence:

Genuine source	Typical connecting evidence	What it should connect
Salary or bonus	Payslip, employment record, matching bank credit	Employer to your account
Property or asset sale	Sale agreement, completion statement, matching credit	Buyer or escrow to your account
Gift	Gift statement if accepted, donor identity, donor transfer record	Donor to you
Inheritance	Grant, executor or estate statement, distribution credit	Estate to beneficiary
Business income	Invoice, contract, accounts, matching receipt	Customer or business to owner
Investment redemption	Broker statement and settlement credit	Holding sale to bank account

These are examples, not a promise that the bank will accept them. Ask what it requires for your actual source and jurisdiction. If the money combines several sources, allocate amounts rather than presenting an unexplained pile of documents.

For transfers between your own accounts, provide statements that show matching names, dates, amounts, currencies, and reference numbers on both sides. Explain conversion or aggregation. Do not omit an intermediate account because it makes the story shorter; a broken chain creates more questions.

4. Prepare the smallest complete evidence set

Use original PDFs or official downloads where available. Keep document headers, issuer identity, your name, relevant account number fragments, dates, amounts, currencies, and transaction references visible. Preserve originals separately from any copies prepared for submission.

Ask the bank whether you may redact unrelated transactions, full account numbers, addresses, tax identifiers, third-party personal data, or commercially sensitive material. Redaction must not conceal facts needed to test the source or route. Never crop, combine, annotate, or edit a document in a way that changes its meaning.

Create an index listing each file, issuing organization, covered period, and the link it proves. Use plain filenames such as 01-employment-contract.pdf, 02-payslips-june-august.pdf, and 03-bank-credit.pdf; do not put passwords or full account numbers in filenames.

If a document is in another language, ask whether an ordinary translation, certified translation, or original plus translation is required. Do not replace the original with a translated copy. If a source cannot produce the expected document, explain why and ask which alternative the bank accepts rather than manufacturing a substitute.

5. Submit a factual response and manage follow-ups

Answer the bank's questions in the same order. State what each document proves and identify any limitation. If a payment came from accumulated salary over several months, say so and show the accumulation; do not call it a one-time salary payment. If part was a gift, identify that part truthfully.

Upload only through the verified route. Save the submission receipt, filenames, message, and time. Ask whether the bank has enough to assess the case, when it expects to respond, and whether transfer, card, cash, or account functions are restricted meanwhile.

The Financial Action Task Force describes customer due diligence and ongoing scrutiny as risk-based measures and states that institutions should understand the purpose and intended nature of business relationships.［2］ It does not create a single global consumer document list. Banks may ask different follow-up questions based on the transaction, customer profile, corridor, and applicable law.

Respond promptly but do not guess. If you do not know an answer, say what you can verify and when you can provide it. Keep communications consistent. Conflicting dates or source descriptions may prolong review even when the funds are legitimate.

6. Escalate safely if the request remains unclear

If the bank repeatedly asks for “more proof” without identifying the gap, request a written explanation of which link remains unverified and which alternative evidence it accepts. Ask for the compliance case to be reviewed through the bank's complaint or escalation route.

Do not split, reroute, relabel, or resend transactions to avoid a review. Do not ask another person to move the money on your behalf. Those actions can create new compliance concerns and separate losses. If the transfer remains delayed, track it through the pending-transfer checklist without assuming the compliance case is the only cause.

If the bank plans to reject or close the relationship, ask how and when remaining money will be returned, which transactions remain pending, and what records you can download. Obtain legal or financial advice where the amount, account restriction, tax position, sanctions issue, or business impact is material.

Use the separate visa proof-of-funds guide for an immigration balance requirement; it cannot substitute for this transaction provenance.

Summary

Verify the request and secure submission route through an official bank channel.
Identify the particular activity that generated the transferred money.
Trace the money through every relevant account with matching records.
Submit the smallest complete, truthful evidence set and preserve originals.
Escalate unclear requests through formal channels without evasion or fabrication.

Frequently Asked Questions

Is a bank statement enough as source-of-funds proof?

It may show where money was held and moved, but it may not explain what generated it. The bank may also need a payslip, sale agreement, inheritance record, invoice, or other source document linked to the statement credit.

Is source of funds the same as source of wealth?

No. Source of funds concerns the money used for the specific transaction. Source of wealth concerns how a person's broader assets or net worth were accumulated.

Can I redact unrelated transactions?

Ask the bank first. Redaction may be acceptable for irrelevant data, but it must not hide account ownership, relevant amounts, dates, counterparties, or the path needed to verify the funds.

Why is the bank asking after it accepted my transfer?

Monitoring can occur before, during, or after a transaction, depending on the institution and applicable rules. A request does not by itself establish wrongdoing or guarantee a particular outcome.

What if the money came from several sources?

Break the amount into components and document each genuine source and route. Explain any aggregation or currency conversion so the components reconcile to the reviewed transfer.

Should I send documents by email?

Only if the bank confirms that exact address and method through an independently verified channel. Prefer its authenticated portal or another approved secure route when available.

Can the bank keep the transfer on hold indefinitely?

Timelines and rights depend on the institution, product, contract, reason, and jurisdiction. Ask for the case status and complaint route, and seek qualified advice if the restriction or delay is material.

Disclaimer: This guide provides general compliance and record-handling information, not legal, financial, tax, sanctions, or banking advice. Requirements, document standards, timelines, restrictions, and complaint rights vary by institution and jurisdiction.

References

HM Revenue & Customs — AMLG11630: Guidance for all sectors: Source of Funds & Source of Wealth — https://www.gov.uk/hmrc-internal-manuals/anti-money-laundering-guidance-for-supervised-businesses/amlg11630
Financial Action Task Force — The FATF Recommendations — https://www.fatf-gafi.org/en/publications/Fatfrecommendations/Fatf-recommendations.html

Sources checked 12 September 2026.

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Bank Requests Source-of-Funds Proof for a Transfer