A Reddit user recently posted in genuine distress: between 2023 and 2025, while a student and part-time worker, they and their friends had used PayPal to move money off their credit cards and back into their bank accounts — a workaround to get cash when their card wouldn’t allow a direct transfer. Thousands of pounds went back and forth. Then a letter arrived from HMRC asking them to file a Self Assessment return for those years. They told HMRC they were never self-employed. HMRC called back and said PayPal had reported income to them. The comments section split between “just send the statements, it’s fine” and “this is fraud, get a lawyer.”
If you’re in the same situation — PayPal payments between friends that HMRC now thinks are income — here’s what’s actually going on, why it got flagged, and exactly what to do.
Why HMRC Thinks You Earned Income
The first thing to understand is that HMRC has not (yet) concluded you owe tax. What has happened is that information has reached them suggesting money flowed into your accounts, and that triggered a question. There are three realistic routes by which that happens.
1. The UK platform reporting rules
Since 1 January 2024, digital platforms that let users sell goods or services must report sellers to HMRC under the Platform Operators (Due Diligence and Reporting Requirements) Regulations 2023. The first reports were due by 31 January 2025, covering the 2024 calendar year — which lines up neatly with when these letters started landing.
Crucially, the rules only require reporting of sellers who “actively supply or are paid for goods or services” on the platform. Personal transfers between friends — PayPal’s “Friends and Family” option — are not payments for goods or services, so they should not appear in a platform report. If your transactions were genuinely all F&F, this is not the mechanism that flagged you.
But there’s a catch worth knowing about: if any of those payments were sent as “Goods and Services” — even by accident, or because the sender picked the wrong option, or because PayPal’s system treated a credit-card-funded payment differently — they can be reportable. Several commenters on the Reddit thread suspected exactly this. The only way to know for sure is to look at your PayPal statements, which show the transaction type and whether PayPal fees were deducted (a strong signal it was processed as a commercial payment, not F&F).
2. HMRC’s CONNECT system and bank data
This is the more likely explanation for F&F round-trips getting flagged. HMRC’s CONNECT analytics system cross-references huge volumes of data — including bulk transaction feeds from payment providers and bank account information obtained via information notices and international exchanges. It is specifically designed to spot patterns: money flowing in with no matching tax return, high-volume low-value transactions that look like trading, or income that grows year on year on a platform but never appears in a Self Assessment.
A round-trip — money in from one person, straight back out to the same person, repeatedly — looks to a pattern-matching system like either trading income being received and spent, or something being deliberately moved to obscure its source. CONNECT does not know it was a loan. It sees the shape, and it raises a flag for a human compliance officer to review.
3. Suspicious Activity Reports
Banks and payment providers have legal obligations under the Proceeds of Crime Act 2002 to report transactions that look like they could be money laundering. A pattern of large, frequent, in-and-out payments between a small group of people is exactly the kind of thing that triggers a Suspicious Activity Report (SAR) to the National Crime Agency — and that information can flow back to HMRC. This is not a charge or an accusation; it is a flag. But it is a flag that explains how HMRC came to be looking at you.
The key takeaway
When HMRC tells you “PayPal has notified us of income,” that is them paraphrasing. What they almost certainly mean is: information has reached us showing payments into your account, and we want you to explain them. A report is not a determination of taxability. It is the start of a question, not the end of one.
Is It Actually Income? (No — A Loan Is Not Taxable)
Here is the part the Reddit thread got badly tangled. Several commenters said things like “HMRC will see this as income, that’s just how it is.” That is not how the law works.
A genuine loan is not taxable income, regardless of the term — whether it is repaid over five years or five minutes. This is a foundational principle of UK tax law. When you borrow money and pay it back, you have not gained anything. There is no income, no profit, no gain to tax.
In the Reddit poster’s scenario, the mechanics are:
- Friend A pays Friend B £1,500 via PayPal (funded by Friend A’s credit card).
- Friend B sends £1,500 back to Friend A’s bank account.
- Friend A uses the cash, then pays off the credit card bill next month.
Friend B — the person HMRC is querying — received £1,500 and sent back £1,500. They are net zero. They did not earn anything. They did not keep anything. They were a temporary pass-through. That is not income in any meaningful sense, and it is not income in the legal sense either.
The same logic applies even if you were on both sides of the loop at different times — sometimes the one sending, sometimes the one receiving. What matters is whether, at the end of it all, you retained any money that was not yours to begin with. If the answer is no, there is no income.
When it stops being “not income”
There are a few situations where this defence breaks down, and you should be honest with yourself about which one you are in:
- You kept some of the money. If a friend sent you £2,000 and you sent back £1,800 and kept £200 as a “thank you” or a fee, that £200 is income (likely miscellaneous income, and potentially trading income if you were doing it regularly for profit).
- You were charging a fee. If you were effectively providing a cash-advance service for a cut, that is a trade, and the fees are taxable.
- The money was not actually round-tripped. If you received money and did not send it back — because it was genuinely a gift, or payment for something, or you spent it — then it may be income or a receipt that needs explaining on its own terms.
If any of these apply, the situation is different and you should get professional advice before responding to HMRC. The rest of this article assumes the genuine round-trip scenario: money in, same money out, nothing kept.
Why It Looks Like Money Laundering (and Why It Probably Isn’t)
This is the part that scared the Reddit poster the most, so let’s address it directly.
The pattern of money coming in and immediately going back out, repeatedly, between a small group of people, is textbook “layering” — the second stage of money laundering, where proceeds of crime are moved around to obscure their origin. That is why banks, PayPal, and HMRC all have systems that flag it. They are not wrong to flag it. The pattern genuinely matches.
But matching a pattern is not the same as being money laundering. Under the Proceeds of Crime Act 2002, money laundering requires the property to be “criminal property” — meaning it is, in whole or in part, the proceeds of criminal conduct, and you know or suspect that it is.
If the money genuinely came from a credit card cash advance — a legitimate line of credit that the cardholder is paying back — it is not proceeds of crime. Moving it around to get it into a bank account may be against the credit card’s terms and conditions (more on that below), but breaching a contract is a civil matter, not a criminal offence. So the round-trip, on the facts as the Reddit poster describes them, is not money laundering.
The risk is not that you are a money launderer. The risk is that the pattern looks like you might be, and the only way to resolve that suspicion is to prove the source of funds. That is what the audit trail in the next section does. Once HMRC can see the money came from a credit card and went back to the same person, the money laundering concern evaporates — because there is nothing to launder.
The one scenario where this gets serious
If any of your friends were not actually funding these payments from their own credit cards — if the money was coming from somewhere else and you were the pass-through helping to clean it — then you could have a real problem, whether you knew the source or not. This is why several Reddit commenters warned that you might have been used as a “mule” without realising it. You cannot control what your friends did, but you can control how transparent you are. If you hand over a complete audit trail and it shows the funds came from credit cards, you are protected. If the trail does not show that, you need to find out why — and get advice fast.
The Credit Card Terms Issue — Real, but Not HMRC’s Problem
A lot of the Reddit thread was spent arguing about whether the cash-advance workaround was fraud. Here is the honest answer, kept separate from the tax question because it is a completely different issue.
Using PayPal to turn credit card spending into cash, in a way that avoids the cash advance fees and higher interest rates your card issuer would normally charge, is very likely a breach of your credit card’s terms and conditions. Card issuers treat direct cash advances differently from purchases — higher fees, interest from day one, no interest-free period. Routing a payment through a friend to make it look like a purchase and get cash back is circumventing that, and the issuer could in theory take action: closing the account, demanding repayment, or in extreme cases alleging fraud by false representation under the Fraud Act 2006.
In practice, credit card issuers rarely pursue individual consumers for this — the amounts are usually small and the cost of action is high. But it is a real risk, and it is separate from anything HMRC cares about.
The important point for your HMRC response: do not conflate the two issues. HMRC is not the credit card police. They do not care whether you breached your card’s terms. They care whether the money was income. When you write to HMRC, explain the tax position — these were loans/round-trips, not income — and do not volunteer a long justification of why the cash advance method was legitimate. That is a conversation for the card issuer if they ever raise it, not for HMRC. Over-explaining the mechanics can read as defensive and can muddy a simple point: this was not income.
How to Prove It Was Not Income: The Audit Trail
This is the single most important part of your response, and it is where the Reddit advice was actually right. One commenter nailed it: “You will have to provide a complete, unbroken audit trail including credit card statements, PayPal transaction histories, and friends’ corresponding bank statements. They must show that every pound sent out matched back in as a net zero transfer, proving no profit or taxable income was generated.”
That is exactly what you need. Here is how to build it.
What to gather
For each tax year HMRC is querying:
- Credit card statements — for you and, if possible, each friend involved. These show the original charge that funded the PayPal payment. This is your proof of source of funds.
- PayPal transaction histories — the full download, not just the summary. For each payment, you want to see: the date, the amount, the sender/recipient, the transaction type (Friends and Family vs Goods and Services), the funding source (credit card, bank, balance), and any fees deducted. This is your proof of what the payment was and how it moved.
- Bank statements — for the account(s) that received the money from PayPal and sent it back out. This is your proof that the money arrived and left, net zero.
How to present it
Do not just dump three years of statements on HMRC and hope they figure it out. Build a reconciliation — a simple document (a spreadsheet or a table) that, for each round-trip, shows:
| Date | Credit card charge | PayPal payment in | PayPal payment out | Bank credit | Bank debit | Net |
|---|---|---|---|---|---|---|
| 12 Mar 2024 | £1,500 (Friend A’s card) | £1,500 from A | — | £1,500 from PayPal | £1,500 to A | £0 |
| 15 Apr 2024 | £2,000 (Friend B’s card) | £2,000 from B | — | £2,000 from PayPal | £2,000 to B | £0 |
Every row nets to zero. Every figure is backed by a statement page you can reference. This makes it trivially easy for the HMRC officer to see there is no income — and trivially easy for them to close the enquiry.
If your friends’ statements are needed
You may not have your friends’ credit card statements, and you cannot force them to hand them over. But you can ask. If they refuse, HMRC can issue an information notice directly to them. Either way, your own records — PayPal in, bank in, bank out — should already show the round-trip from your side. The friends’ credit card statements strengthen the source-of-funds proof but are not always essential if your own trail is clean.
What to Do: Step by Step
Step 1: Do not ignore the letter or the call
The Reddit poster’s instinct to engage was correct. Ignoring HMRC does not make them go away — it converts a question into an enquiry, and then into a determination made without your input, which is much harder to undo. Respond within whatever deadline they have given you.
Step 2: Pull your records before you respond
Do not call HMRC back unprepared. Gather the statements and build the reconciliation table described above first. A panicked phone call where you cannot provide specifics does not help you. A written response with a clean audit trail does.
Step 3: Respond in writing
A written response is better than a phone call because it creates a record, you control exactly what is said, and you avoid being drawn into verbal explanations of the credit card mechanics (which, remember, are not HMRC’s concern). In your letter:
- State clearly that the payments were personal transfers/loans between friends, not income from goods or services.
- Explain the mechanism briefly and factually: friends sent money via PayPal and you returned it; the money was used to access cash from a credit card and was repaid to the card.
- Enclose the full audit trail (credit card statements, PayPal histories, bank statements) and the reconciliation table.
- Confirm that you retained no profit, fee, or gain from any of the transactions.
- State that, as there is no income, no Self Assessment return is required (unless you have other reasons to file — see below).
Step 4: Check whether you actually do need to file
The Reddit poster told HMRC they were “never self-employed and don’t have to file an assessment.” That may be true, but Self Assessment is not only for the self-employed. There are many reasons you can be required to file — income over £100,000, untaxed income, capital gains over the annual allowance, child benefit charge, foreign income, and more. See our guide on what to do if you didn’t know you had to register for Self Assessment for the full list. If any apply, you should file regardless of the PayPal issue.
Step 5: Wait, and respond to follow-ups promptly
HMRC will review your evidence. They may accept it and close the matter, ask for additional information (often the friends’ side of the trail), or open a formal enquiry. Respond to every request promptly and completely. The faster and more complete your responses, the faster this resolves.
What Not to Do
- Do not describe it as “manufactured spend” or a “loophole” to HMRC. Those are credit card / churning terms, not tax terms, and they sound like you are admitting to a scheme. To HMRC, the relevant fact is simply: these were loans between friends, returned in full, no income retained. Keep it that simple.
- Do not volunteer the credit card fee-avoidance angle. It is not relevant to whether the money was income, and it introduces a separate issue that HMRC does not need to know about and cannot help you with. If asked directly, answer honestly — but do not lead with it.
- Do not destroy or edit any records. If you are tempted to “tidy up” your PayPal history or omit transactions that look bad, do not. Incomplete records are far more damaging than an honest round-trip pattern, and destroying records that HMRC has asked for is itself an offence.
- Do not assume the worst from internet commenters. The Reddit thread was full of people calling this fraud and predicting prison. For a genuine round-trip with clean records, the realistic outcome is that HMRC accepts it was not income and closes the file. The scary comments describe the worst-case pattern-match, not the likely outcome when you cooperate fully.
- Do not stop engaging if HMRC pushes back. If they issue a determination or open an enquiry, that is not the end — it is the next stage of the conversation. Keep responding, keep providing records, and get professional help if you have not already.
Should You Get Help?
For a straightforward, well-documented round-trip where you can build the audit trail yourself, you can handle this without an accountant — the law is on your side and the evidence is in your own records.
You should get professional help if any of these apply:
- The amounts are large (tens of thousands of pounds or more). The larger the figures, the more seriously HMRC treats the pattern, and the more carefully you need to frame the response.
- HMRC opens a formal enquiry or mentions fraud, evasion, or money laundering. At that point you need someone who speaks HMRC’s language and can manage the process — not just provide documents.
- You are not confident you can build a clean reconciliation. If your records are messy, partial, or you cannot match payments to returns, an accountant can reconstruct the trail and present it credibly.
- You suspect a friend’s side of the story may not be clean. If there is any chance the funds did not come from a credit card, you need advice before you put your name to a written explanation.
Free help if you can’t afford an accountant
If your income is low and you cannot afford professional help, contact TaxAid — a charity providing free tax advice to people on low incomes. They have experience with HMRC enquiries and can help you prepare your response. The Reddit poster was right to consider this route.
If you can afford professional help, use our Find an Accountant service and mention that HMRC has queried PayPal payments — we will match you with someone who handles HMRC enquiries.
The Bottom Line
- A report from PayPal is not a conclusion that you owe tax. It means HMRC has information about payments into your account and wants you to explain them. The platform reporting rules cover goods and services, not Friends and Family transfers — but HMRC has other ways of finding out, and the round-trip pattern is exactly what its systems flag.
- A genuine loan is not income, whether it lasts five years or five minutes. If you received money and returned the same amount, net zero, you have no income to declare and no tax to pay.
- The pattern looks like money laundering, but it almost certainly isn’t. Money laundering requires the funds to be proceeds of crime. Credit card cash advances are not proceeds of crime. The risk is not that you are a launderer; it is that you have to prove the source of funds to clear the suspicion — and a clean audit trail does that.
- The credit card terms issue is real but separate. Breaching your card’s terms is a civil matter between you and the issuer, not an HMRC matter. Do not conflate the two when you respond to HMRC.
- Build a complete, unbroken audit trail. Credit card statements, PayPal histories, bank statements, and a reconciliation table showing every pound in matched a pound out. That is what closes this.
- Respond in writing, keep it simple, and cooperate fully. Say it was loans between friends, returned in full, no income retained. Do not over-explain the mechanics. Do not ignore the letter. The faster and cleaner your response, the faster this ends.
For the full list of HMRC contact types, investigations, and what to do when HMRC contacts you, see our HMRC contacted me hub.
If HMRC has also asked you to file Self Assessment returns for years you missed, see our guide on what happens when you didn’t know you had to register. For the full overview of what happens during an HMRC investigation — the 3 tiers of scrutiny, the enquiry stages, COP9, and when to get professional representation — see our HMRC investigation hub. For help understanding Self Assessment terms, browse our jargon buster. If you’ve received penalties you want to challenge, see how to appeal an HMRC penalty.