Once you hand something over, you lose control of what happens next. That’s true whether it’s $500 in cash, a set of car keys, your phone, or your name on someone else’s loan. The person borrowing it almost never understands how much they are really asking for, and most of the time, neither does the person saying yes.
Some things are fine to share. A cup of sugar, a book you’ve already finished, a spare umbrella on a rainy afternoon. But certain belongings carry consequences that go well beyond what they’re worth on paper. Because lending them puts your finances, your legal standing, your privacy, or your closest relationships on the line. The ask almost always sounds smaller than it actually is.
That’s partly because the risk is buried in details most people never think about until something goes wrong. Take your car, for example. Your insurance follows the vehicle, not the driver. So if a friend totals it on the highway, you’re the one filing the claim. That kind of exposure doesn’t cross your mind when someone just needs to run a quick errand, but it’s there from the second you hand over the keys.
Saying no to someone you love can be uncomfortable. But watching your credit score drop because your sibling missed payments on a loan you co-signed is worse. The discomfort of a clear, kind “no” lasts a few minutes. The consequences of a regretted “yes” can follow you for years. These are 10 of the most common things people usually agree to lend out, starting with the one that causes the most damage.
Cash and Your Credit Card
Of all the things people lend to friends and family, money is the most common and the most likely to cost you, whether that’s the amount itself, the relationship, or both. Bankrate, one of the most established personal finance research platforms in the United States, tracks lending behavior through nationally representative surveys of American adults, and its 2025 Financial Taboos Survey found that about 7 in 10 Americans have loaned money or covered group expenses expecting to be paid back.
More than half of those people, 55%, experienced at least one negative result. The most common was losing the money outright, which happened to 44% of lenders, but the financial loss wasn’t always the worst of it. Another 26% said the debt damaged or destroyed the relationship, and roughly 4% reported that the situation turned physically violent. Ted Rossman, Bankrate’s principal analyst, advises against loaning money, using credit cards, or co-signing for a loan entirely. Because the outcomes have been consistently bad across every survey cycle Bankrate has run.
The reason loaning cash to loved ones fails so reliably is that it operates without any of the structures that keep formal loans on track. There’s no repayment schedule and no credit bureau watching, so the borrower never feels the weight of that debt the way they feel a mortgage payment or a car note coming due. Your loan quietly slides to the bottom of their priority list. While you notice every dinner out, every online shopping delivery, every vacation photo posted to Facebook. Most people in that position stay silent because saying something feels worse than absorbing the loss. And the relationship pays for it either way.
Credit cards make all of this worse because when you hand your card to someone, their spending becomes your debt. Whatever they charge shows up on your credit report as if you spent it yourself, and unlike a cash loan, where the damage stops at the amount you handed over, a credit card lets the balance keep climbing. Bankrate’s earlier survey cycles have consistently shown that lending a credit card leads to unauthorized charges more often than any other negative outcome. At that point, the money is gone, and the hit to your credit is already on the record.
If someone you care about needs financial help and you’re in a position to assist, Rossman’s advice is to treat it as a gift. Give what you can afford to lose and carry no expectation of seeing it again, because if you can’t afford to give it, you can’t afford to loan it. The Bankrate numbers make that clear. And when the request is specifically for your credit card, a better option is to help directly by covering a specific bill yourself or sitting down together to look at low-interest alternatives. That way, the help stays real without putting your credit on the line.