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Part of Marketplace scams: keep deals on-platform
Marketplace scams rules 2027 for household deals
Marketplace scams rules 2027 for household deals: set payment, code, and information boundaries before a sale, then use shared rules to resist pressure.
Marketplace scams rules 2027 work best as decisions you make once, when nothing is at stake, so that you do not have to make them again while somebody is waiting for an answer. Here, 2027 labels this edition of the household rulebook; it is not a claim about a new law, deadline, or platform policy.
That is the whole argument for having any. Judgment is worse under time pressure, worse when money has already been discussed, and worse when you have spent an hour being agreeable. A rule made on a quiet Tuesday is not smarter than you are. It is just made by a version of you who was not being hurried.
What to take away
- The point of a rule is that it removes the decision, not that it makes you suspicious.
- A rule you would break for a good enough reason is not a rule. Write it so there is no reason.
- Rules about payment method and about codes do most of the work. Everything else is refinement.
What makes a rule usable
Three properties separate a rule that survives contact with a real deal from one that reads well and gets abandoned.
It has to be checkable without judgment. "Do not deal with suspicious people" is not a rule, because deciding whether somebody is suspicious is exactly the thing you cannot do reliably in the moment. "No bank transfers to anyone I have not met" is a rule, because you can answer it in one second.
It has to be stated as a refusal, not a preference. Preferences bend. "I prefer to pay through the platform" ends with you paying a stranger directly because they explained why they cannot use it.
And it has to cost something you can live with. A rule so strict you will break it the first time it is inconvenient trains you to treat rules as suggestions.
The money rules
These are the ones worth writing down first, because payment method decides whether anything else you do matters.
Write down these payment rules:
- For a shipped order on Facebook Marketplace, eBay, Craigslist, OfferUp, or Nextdoor, use the marketplace's checkout only when it is offered for that listing. If it is not offered, do not send advance payment or move payment off-platform.
- For local pickup, inspect the item before paying. Exchange in person, in a public place, and do not pay a deposit.
- Never pay a stranger for a marketplace deal through Zelle, Venmo, Cash App, a bank transfer, a gift card, or cryptocurrency.
- Use PayPal Goods and Services only when the transaction is eligible under PayPal's terms. Never use PayPal Friends and Family for a purchase.
- Set the household cap at the largest loss that would not delay a bill. Above that cap, pause for another household member to review the deal and do not pay outside an eligible marketplace checkout.
- Refuse an overpayment arrangementdo not accept extra money and send part of it back.
Money rules to write down
- No gift card codes, ever
- No crypto to private parties
- No instant bank transfer to strangers
- No deposit on unseen items
- Refunds only to original account
- Above set figurein person or platform
That last one is worth setting properly. Pick the number where losing it would actually hurt, and treat everything above it as a different category of transaction. The table of what each payment method leaves you if a deal fails is in marketplace scams.
| Payment method | Household rule | What remains if the deal fails |
|---|---|---|
| Marketplace checkout | Use it only when offered for that listing and the transaction is eligible. | Keep the order record and use the marketplace's dispute route; a refund is not guaranteed. |
| Cash at local pickup | Pay only after inspecting the item in person. | There is no remote payment dispute route; do not hand over cash before the item. |
| Zelle, Venmo, or Cash App | Do not use these to pay a stranger for a marketplace deal. | Keep the transaction record, but do not assume the payment can be reversed or reimbursed. |
| PayPal Goods and Services | Use only when the transaction is eligible under PayPal's terms. | Keep the transaction record and follow the applicable dispute process; a refund is not guaranteed. |
| PayPal Friends and Family | Never use it for a purchase. | The household rule does not treat it as a purchase-protection route. |
| Bank transfer | Do not send one to a seller directly. | Keep the transfer record; recovery is not assured. |
| Gift cards or cryptocurrency | Never use them to pay a marketplace seller. | Keep transaction details, but do not assume sent value can be recovered. |
The code and account rules
One rule matters most: a verification code on your phone never gets read out to anyone, not to prove you are real, confirm a badge, or release a payment.
Code and account rules
- Never read out a verification code
- Nothing installed or enabled for a deal
- No account verified to receive money owed
Codes prove you are you to a service, nothing to another person. The mechanics of why that request is always an attack are covered in phishing scams rules 2027.
Two more that sit alongside it. Nothing gets installed, enabled, or granted access so that a deal can proceed. And no account of yours gets "verified", "upgraded", or "activated" as a condition of receiving money you are owed, because money you are owed never requires you to release it yourself.
Write the code and account rules this way: never share a login, password, recovery phrase, or one-time code; open the marketplace or payment service by using its app or typing its address yourself, not through a buyer's or seller's link or QR code; and never install remote-access software, share your screen, or grant account access to complete a deal. If a transaction is conditional on any of those actions, stop it.
The Cybersecurity and Infrastructure Security Agency's guidance on multi-factor authentication is a reasonable place to see why the code is worth this much protection.
The information rules
A marketplace deal needs very little about you, and the gap between what it needs and what people hand over is where the slower losses come from.
Write down these information rules:
- Do not send a buyer or seller a photo of an ID, payment card, or bank details to prove you are trustworthy.
- Do not share a password, recovery phrase, or verification code, even if the other person says it is needed to receive payment.
- Do not put your home address in a public listing. For a local exchange, agree on a public meeting place; share a delivery address only when delivery is necessary and the plan is settled.
- Keep the conversation on the marketplace when possible, and do not use a link or QR code supplied in chat to accept money or verify an account.
Information you never hand over
- No identity document to a private party
- No home address before a deal is agreed
- No phone number where platform messaging works
- Nothing about work, schedule, or household
If you are selling from home and a collection is unavoidable, the address is the one thing you cannot avoid sharing, which is why the safety rules around meeting matter more in that case than any of the above.
The rules that are about you, not them
Two habits do more than any check.
Sleep on anything above your threshold. A deal that cannot survive one night was never a deal, and urgency is the only tool that works on people who are otherwise careful.
Tell one other person before money moves. Not for permission. Saying a plan out loud to somebody who is not invested in it is the cheapest error-correction available, and it is the mechanism that most often stops a loss in progress.
Writing the household version
Rules only work if the other people in the house have them too, and the person most likely to be targeted is rarely the person reading this page.
One-page household rules
- Keep it to one page
- Name allowed and banned payment methods
- Nobody reads out a code
- Anyone can ask anyone to check
- Saying a rule was broken early helps
Keep it to one page and make it about actions rather than warnings. Name the payment methods that are allowed and the ones that are not. Write down that nobody in the household ever reads out a code, and that anybody can ask anybody else to check something without it being an accusation.
Add a line saying that if a rule was broken, saying so early is the thing that helps, because shame and delay are what turn a small loss into a large one.
For a small business selling online, the same content belongs in a short written policy rather than a family conversation, and the shape of one is in phishing scams policy template. The FTC's advice on avoiding a scam is a useful second voice to hand to somebody who thinks the household rules are excessive.
When the rule is inconvenient
It will be, and that is not a sign the rule is wrong.
A genuine seller who cannot take a platform payment loses a sale. That is a real cost, and it is smaller than the cost of the rule having an exception, because the exception is what the next approach will aim at.
If you find yourself constructing a reason why this particular case is different, that is the moment the rule is doing its job. Whether the reason is real is not knowable from inside the conversation. The routes back if you decided wrong are in scam reporting and recovery.
If a deal goes wrong, save the listing, messages, and payment record; contact the payment provider through its official app or website; and use the marketplace's in-app report or dispute controls. You can also report fraud, scams, and bad business practices to the FTC through its FTC fraud reporting page.
Common questions
Is this not just refusing to trust anyone?
No. It is refusing to make trust decisions the load-bearing part of a transaction. You can be perfectly friendly with somebody and still pay through the platform.
Where should I set the amount above which the strict rules apply?
At the point where losing it would change your month. That is personal, and picking it in advance is more useful than picking it well.
What if the other person is offended?
A genuine buyer or seller has heard all of this before and finds it unremarkable. Offense at ordinary caution is itself informative.
Do these rules apply to buying from a business rather than a person?
Partly. The payment and code rules hold everywhere. The rest is aimed at private deals, where there is no company to complain to.
A rule got broken. What now?
Move immediately to the money and account steps rather than working out how it happened. The reconstruction can wait. Contacting the payment provider cannot.
