In 1916, a grocer in Memphis decided that trust was too expensive.
Before him, buying groceries usually meant standing at a counter while a clerk fetched your goods and wrote what you owed in a book. The book was the point. It kept a running tab, and the tab kept a relationship: the clerk knew your name, your family, whether the crop had come in. When this grocer opened a self-service store that fall, he took all of that out. Shoppers walked through a turnstile, past shelves with the prices marked, and carried a basket to the front. They paid before they left. No book, no tab, no clerk deciding whether you were good for it. He cut the credit his rivals carried on their customers because it cost him too much to carry it too. He also believed that when people could see more, they would buy more, and he was right. Within six years there were more than a thousand of these stores across twenty-nine states.
The tab did not vanish from every store at once. But the self-service model won, and the register replaced the ledger as the ordinary picture of buying food. You paid before you carried the bag out.
Now a checkout screen offers to split your grocery bill into four. The tab is back. What it lost was its face.
The easy read is that people finance groceries because they are broke, and the story ends there. Some of that is true, and I will get to it. But start with the person who is not broke. A stay-at-home mother in Chicago spent four hundred and eighty dollars on school uniforms and supplies for her daughter starting ninth grade, and put it on a pay-later plan. She was clear that she did not have to. "We have the means to buy them upfront," she said. "I just feel it's easier to do the payments versus putting it on my credit card." She routes any purchase over two hundred dollars through an installment app, links it to her card, sets the payments on autopilot, and collects the rewards points. She called it a hack. She said she was finagling the system.
A household that can pay cash and chooses to owe anyway is not solving a money problem. It is solving a feeling problem. The four smaller numbers sit easier than the one whole number, even when the money to cover the whole number is right there in the account.
So the question is not why broke people borrow. People have always borrowed for food. The question is why the split feels good enough that a shopper who can pay in full reaches for it anyway. Rule out the ordinary answers first.
Start with cost. The standard plan splits a purchase into four equal payments, the first at checkout and three more every two weeks, usually at zero percent. The low or no interest is real, and some people do name it: in one survey about four in ten cited a low or no rate as a reason. But it is rarely the thing that decides. When people are asked their single top reason, plain ease and spreading the payments come first, and only about one in nine name the interest-free terms.
Then desperation, which is real. More than half of buy-now-pay-later users say they could not make ends meet without it, and in the Federal Reserve's household survey most users said it was the only way they could afford the purchase, a share that climbs to nearly three in four among people earning under fifty thousand dollars. That strain is genuine, and it still leaves a gap. A third of six-figure earners who use these apps have bought groceries on them too. Hardship alone does not explain the comfortable shopper.
What is left standing is the split itself. The mechanism does something to the pain, and once you look at it, you can see exactly what.
Here is the move. One cart total becomes a small payment now and a schedule you barely read. The receipt in your history shows the full amount under the store's name, one whole grocery order, clean, done. The obligation, meanwhile, has quietly become four dated claims on money you do not have yet. The bill does not arrive in the mail with your name on it. It arrives as an app reminder, after the food is eaten. The final schedule can even be larger than the one you saw at checkout, once tax and tips and delivery fees and the substituted items settle. If a payment misses, some plans add a fee of up to eight dollars, and your own bank can charge you again for the empty pull. None of that is hidden, exactly. It is just placed after the moment when you would have felt it.
The store wants the button there for the oldest reason in retail. These providers commonly take a cut from the merchant, around two to four percent, and the apparatus is built, in the government's own words, to get people to buy more and borrow more. The 1916 grocer pulled the tab to lower his costs. He separately believed that shoppers who could see more would buy more, and he built his store on it. The app shares only that second belief. It puts the tab back and wagers the same way on buying more, except now the seeing and the owing happen on the same screen.
It is working at the grocery store specifically. Grocery use among these borrowers has jumped from fourteen percent to twenty-nine percent in two years, third now behind clothing and electronics. Financing food is still a small slice of the total dollars these companies move, so this is a real bridge for a visible group of people, not yet proof that your neighbor is expensing his milk. But the trend line is not subtle. Nearly two-thirds of users carry more than one of these loans at once. Almost half paid one late in the past year. And the people using it for essentials are the ones most likely to lose the thread: most of them say that at least sometimes they cannot tell you how many payments they have left.
The other side is stronger than its critics allow.
Sometimes the smooth button is the sane move, and the arithmetic is not close. A two-hundred-dollar cart in four fifty-dollar payments, paid on time at zero interest, beats one overdraft fee, which averages almost twenty-seven dollars and gets charged by ninety-four percent of checking accounts. It beats a payday loan, where a fifteen-dollar fee per hundred works out to an annual rate near four hundred percent. It beats carrying the balance on a card at an average rate around twenty percent. And the calendar is genuinely cruel: about a third of American households have income that jumps around from month to month, more than half of those earning under twenty-five thousand dollars, and rent does not care that your hours got cut this week. If your grocery run lands in the dip and your paycheck lands in the schedule, moving part of the cost forward is not weakness. It is treasury management with bad tools.
A school aide in Baltimore, who also works part time in a radiology office, started using these apps after her mother had a ruptured brain aneurysm while the two of them were on vacation. She maxed out her cards covering hotels, the transfer home, an ambulance ride of about twenty-five hundred dollars. When the cards were full and the household still had to eat, she used pay-later to keep it going, groceries included. She has not missed a payment, because she knows exactly what happens if she does. She is not careless. She is doing the most responsible thing left within reach.
Grant all of that. I do grant it. The steelman holds wherever the purchase is necessary, the plan is truly free if paid on time, and the payment dates line up with money that is actually coming. Keep those three conditions and the button is a mercy.
The trouble is the reflex it can build once the emergency is over. Used once, the split is a bridge. Used every week, it becomes a way of living just behind your own income: another loan opened before the last one closes, a payment slipped here and there, a schedule you have quietly stopped counting.
A nerve that hurts is doing its job. The split does not repair the week. It numbs the nerve and leaves the injury.
Some of the old frictions were just cruelty: the clerk who could judge your family, the wait, the shame of being known around town to be short. Good riddance to that. But one of them was information. The single number you had to cover before you carried the bag out, the small private arithmetic of what could wait until Friday: that hurt told you something true. It told you when a week had gone wrong. A nerve that hurts is doing its job. The split does not repair the week. It numbs the nerve and leaves the injury. You get the groceries and the calm, and you hand the pain to the version of yourself who exists two weeks from now. A financial planner put it plainly: you stick your future self with the problem, so you get all the benefit today and none of the consequence yet. The person who actually lives it said it better. She called it a never-ending cycle of doom, where she can't get caught up, and the moment she pays one thing off, something else comes due.
That is the cost the interest rate does not capture. Not eight dollars. The slow fade of the signal that used to tell a household it was sinking. When the thing you need most becomes the thing that is easiest to owe for, and owing for it stops feeling like anything at all, you lose the one instrument that told you the week had broken.
In a Minnesota suburb, a church sets out a food truck on Tuesdays for families who have run short. The pastor was asked what he made of his people turning to pay-later apps to get through. He said it did not surprise him, but it made him sad. The relief that gets a family through Tuesday is genuine, and so is the schedule that outlives the groceries by six weeks. The cash-and-carry store made you pay at the register, in full, before you left, so you felt the week at the moment it happened. Now you can wheel a full cart out to the lot feeling looked after, and the week finds you later, after the food is gone and there is nothing left to show for the money but the payment still coming due.