What crypto exchanges and banks will charge in 2026 – and what happens if you're not prepared.

You want to sell your Bitcoin or Ethereum and transfer the proceeds to your bank account – and suddenly the bank or cryptocurrency exchange demands a Proof of origin of funds. What is it, when does it apply, and what happens if you can't produce one? These are questions crypto investors are increasingly facing in 2026. Regulatory pressure on banks and exchanges has risen significantly in recent years – and with it, the requirements for customers who want to move crypto assets.

When does the proof of origin of funds become valid? The most important thresholds.

The most common assumption is: From €10,000 upwards, I have to prove the origin of my money. That's true – but only as a starting point. Money Laundering Act (GwG) While it sets threshold values, banks and cryptocurrency exchanges are allowed to conduct checks even below these levels. And they do.

An overview of the most important borders:

  • Cash deposits into your own bank account: Proof of deposit is mandatory for amounts of €10,000 or more. Those depositing smaller amounts over a longer period may still be subject to scrutiny – banks use automated systems to detect irregularities.
  • New customers at banks: Proof may be required for cash deposits of €2,500 or more.
  • Cryptocurrencies: Cryptocurrency exchanges and banks typically require proof of identity for transactions exceeding €10,000. However, many platforms request this information even for significantly smaller amounts – sometimes as low as €500 or even for the first withdrawal to a bank account.
  • Suspicion-based testing: There is no limit here. If a transaction does not match the existing customer profile, the review can theoretically be triggered from as little as one euro.

What does this mean in practice? Those who regularly deposit smaller amounts can attract just as much attention as someone who makes a single, larger deposit. Banks don't just look at the individual amount, but at the overall picture: Does this transaction fit with your account, your income, and your past behavior?

If you are unsure whether a forensic Proof of Origin Crypto If this is relevant to your situation, contact us for a free initial assessment.

What cryptocurrency exchanges are specifically demanding – and what they call it

Anyone being asked by a cryptocurrency exchange to provide proof of origin for the first time is often surprised – not only by the request itself, but also by the language used. This is because most major cryptocurrency exchanges are international and use English terms that can seem unclear at first glance.

  • Proof of Source of Funds
  • Source of Funds / Source of Wealth – Origin of the funds or assets
  • Origin of Funds
  • Wealth Declaration
  • Proof of Funds – proof that funds are available and legal.

All these terms essentially mean the same thing: The stock exchange wants to know where your money or cryptocurrencies come from – and requires verifiable documents, not verbal explanations via email.

What many investors underestimate: Crypto exchange support is not a bank advisor. The staff who review your documents often work from standardized checklists and reject documents that don't exactly meet their requirements. This leads to long waiting times, repeated inquiries, and in the worst case, account suspension. A carefully prepared Crypto forensics analysis can significantly shorten this process.

Suspicion-based audits: Why even small amounts can be affected

A common misconception: "I've never moved more than 5,000 euros at a time, so I'm safe." The Money Laundering Act explicitly stipulates that obligated entities – i.e., banks, cryptocurrency exchanges and other financial service providers – must not only check fixed thresholds, but should also intervene if transactions appear suspicious.

What might raise suspicion? For example: You've used a checking account with monthly salary deposits for years – and suddenly €8,000 arrives from a foreign cryptocurrency exchange. Or you regularly deposit smaller amounts between €800 and €1,500, which add up to more than €15,000 after a few months. In both cases, the bank may... enhanced due diligence initiate proceedings and demand proof of origin – completely independent of the individual amount.

For crypto investors, this means that anyone who hasn't kept complete records of their transactions often faces a problem when faced with such a request. Old transactions, defunct exchanges, missing purchase receipts – all of these significantly complicate providing proof. This is precisely where forensic support comes in.

What happens if the proof is rejected or missing?

If you cannot or do not wish to provide sufficient proof of the origin of funds, this usually has concrete consequences:

  • Account blocked: The bank or cryptocurrency exchange will freeze your account or wallet until the review is complete. This can take weeks.
  • Delayed payouts: Crypto withdrawals to your bank account will be held until the origin is verified.
  • Termination of the business relationship: Banks can close the account if the suspicion of money laundering cannot be dispelled.
  • Suspicious activity report for money laundering: The bank is legally obligated to report suspicious cases to the Financial Intelligence Unit (FIU). This may trigger a criminal investigation – even if no actual money laundering has occurred.

The tricky part is that you are usually not notified of a money laundering suspicion report. You may only find out about it once the public prosecutor's office or the tax office has already taken action. Anyone who hesitates when asked for proof or submits incomplete documents risks turning a simple compliance check into a serious legal problem. If you have concrete indications of wrongdoing, you should act promptly. Contact us to record.

How a forensic proof of origin helps

A Forensic proof of origin for cryptocurrencies This is not a self-declaration or a tax report. It is a structured expert report that, based on blockchain data and forensic analysis, documents the origin of your crypto assets, the wallets they passed through, and whether they had contact with known high-risk entities.

What the report specifically achieves:

  • Traceable transaction history: All relevant on-chain movements are fully documented – even for older transactions and platforms that are no longer active.
  • Risk classification of the addresses involved: Checking for contact with sanctioned wallets, mixing services or known fraud infrastructures.
  • Proof of wallet ownership: Demonstrates that you actually control the wallets in question.
  • Preparation for compliance purposes: The report is structured in such a way that it directly answers the specific audit questions of banks and crypto exchanges – not as a general document, but as targeted evidence.

Many cases can be quickly resolved with a forensic report. However, those who respond with a compiled package of bank statements and tax exports risk the stock exchange or bank requesting further information – or rejecting the documents altogether. Read more about our Crypto forensics services.

When should you seek professional help?

The clear answer: as early as possible. Anyone who waits until their account is blocked or the stock exchange has issued an ultimatum has already lost valuable time.

Professional support is particularly useful when:

  • Their cryptocurrencies were traded over several years on various exchanges and wallets, and the documentation is incomplete.
  • You received cryptocurrencies from a platform that no longer exists or no longer provides transaction data.
  • The bank or stock exchange has already requested proof of purchase and you are unsure which documents are sufficient.
  • You fear an account freeze or a money laundering suspicion report.
  • You want to withdraw larger crypto positions and prepare for possible audits.

Crypto Investigation offers a free initial assessment Please describe your case – our forensic experts will examine whether and to what extent proof of origin is possible and makes sense. 

Conclusion: Proof of origin of funds in cryptocurrencies – prepared, not caught off guard

Proof of origin for cryptocurrency funds will no longer be an exception by 2026 – it will be commonplace for many investors. Anyone wishing to withdraw crypto proceeds to a bank account or move larger positions on a cryptocurrency exchange should expect to be asked to provide proof of origin. The threshold values are only a starting point: suspicion-based checks can also be triggered for smaller amounts.

A professionally prepared forensic proof of origin answers the questions of banks and cryptocurrency exchanges precisely and reliably – and prevents a compliance request from becoming a serious problem. Contact us for a free initial assessment.

FAQs – Frequently Asked Questions about Proof of Origin of Funds for Cryptocurrencies

From what point do I have to provide proof of origin for cryptocurrencies?

A tax report from tools like Blockpit or Cointracking documents tax-relevant transactions – but it doesn't answer the questions banks and cryptocurrency exchanges ask as part of anti-money laundering checks. A proof of origin must demonstrate where the crypto assets originally came from, whether they had contact with high-risk addresses, and who controls the wallets. These two documents are fundamentally different.

What does „Proof of Source of Funds“ mean?

This is the English term used by many international cryptocurrency exchanges for proof of fund origin. Other common terms include Source of Funds, Source of Wealth, Origin of Funds, Proof of Funds, and Wealth Declaration. They all mean the same thing: they are meant to prove that your crypto assets come from legal sources.

Can a cryptocurrency exchange block my account if I don't provide proof of purchase?

Yes. Cryptocurrency exchanges are legally obligated to restrict or block customer accounts if the origin of funds cannot be verified. In practice, this often means that withdrawals are blocked until the investigation is complete. In serious cases, the exchange can terminate the business relationship.

What happens if my bank files a suspicious activity report regarding money laundering?

Banks are legally obligated to report suspicious activity to the Financial Intelligence Unit (FIU) – without informing you. This report can trigger a criminal investigation, even if no money laundering is actually taking place. Those who react late risk turning a compliance audit into a serious legal problem.

Can older transactions and transactions from no longer existing stock exchanges also be documented?

In many cases, yes. Blockchain data is permanently stored publicly and can be retrospectively analyzed forensically. It becomes more difficult when platforms no longer provide data or when transactions were processed using privacy coins. A realistic assessment of forensic feasibility is part of our free initial consultation.

How much does a forensic investigation into the origin of funds cost?

The costs depend on the complexity of the transaction history – that is, the number of wallets and exchanges involved, and the time periods. Crypto Investigation offers a free initial assessment, based on which a customized quote is prepared. You will receive an initial estimate of whether and how complex the investigation will be, without obligation.

Does the proof requirement also apply if I only transfer crypto from one exchange to another?

For simple transfers between your own wallets or exchanges, no proof of transaction is initially required. However, as soon as you withdraw cryptocurrencies to a bank account or convert them into fiat currency, banks and cryptocurrency exchanges may request proof. Unusual transaction patterns between exchanges can also trigger an investigation.

What do I need to have a certificate of origin issued?

As a starting point, we need the relevant wallet addresses, details of the cryptocurrency exchanges used, and the approximate timeframe of the transactions. The more information you can provide—transaction IDs, purchase receipts, bank statements—the faster and more accurately the verification can be established. Missing information isn't necessarily a problem; forensic methods can fill many gaps.

When should I seek professional help with proving the origin of funds?

As early as possible – ideally before a bank or stock exchange issues an ultimatum. If you have received a request for proof of identity, your account has been blocked, or you suspect money laundering, you should not wait. Contact Crypto Investigation for a free initial assessment of your case.