Red flags

From Affirm and Apple to PayPal and Zip, BNPL transactions are currently estimated to be at least $100 billion annually — a figure that analysts say could skyrocket to between $1 trillion to $4 trillion within a few years. These services split a purchase into four or more installment payments over a period of few weeks or months. They are typically offered with zero or minimal interest, and often come without a credit check.

One significant downside is the opportunity to get into debt fairly easily without realizing it, said Terri R. Bradford, a research specialist in payment systems for the Kansas City Federal Reserve.

The installment process makes it seem like someone is paying practically nothing for the goods or service they’re acquiring, she said.

“So the possibility is that you could, in your mind, think of everything that you’re buying in those four installments and, as a result, take on more debt than you would if you had to pay for them in full each and every time,” she said.

“The opportunity to stack your debt by using multiple Buy Now, Pay Later loans through multiple service providers is one of the biggest risks I see,” she added.

The three major credit bureaus have said they’ll start including BNPL activity on credit reports but they still need to rely on the providers for that information.

The Consumer Financial Protection Bureau said it plans to address these concerns, in addition to probing unclear terms, potential data harvesting, and the lack of other protections. The agency has been collecting information from BNPL providers and expects to publish its findings later this year.

“With everything going on in the economy, this is not getting the attention this deserves,” he said. “Meanwhile, young people and the underbanked are being hurt badly, potentially ruining their credit for years to come.”

“People are buying more than they should, and they admit it. Whether it’s aggressive marketing, whether it’s impulse buying, whether it’s a belief that, ‘I’ll have more tomorrow,’ they’re using lots of these [services],” he said.

The biggest red flag to Lux, a former chief risk officer for Chase, is what people are buying with these services.

“They’re buying cleaning supplies, they’re buying socks, they’re buying sneakers, they’re buying everyday household items,” he said. “When people start [using revolving credit for] everyday purchases like groceries, you know there’s a problem.”

Means to an end

BNPL providers say they view their offerings as a safer and more sustainable option to traditional lines of credit.

“The product and the business, ultimately, is entirely built around the premise of the consumers’ long-term success and their ability to repay,” said Libor Michalek, president of technology, risk and operations at Affirm. “And if they’re not able to, that is where we share in the negative outcome.”

In a statement emailed in response to questions from CNN Business, a Klarna spokesperson wrote:

“Our interest-free products are designed to keep people out of debt. We conduct strict eligibility checks on each purchase, constantly reassess our lending criteria and spending limits, and restrict the use of our services until missed payments are fulfilled.”

Some consumers are using BNPL services with the hope of trying to stick to a budget or balancing out their finances month-to-month, said Charlotte Principato, financial services analyst for Morning Consult.

“What it signals to me is this is a means to an end,” she said. “It’s a considered choice about how to make money go a little further and still achieve the goals that you want and still get the things that you feel like you need.”

That’s especially true for the plurality of Americans who don’t have a steady paycheck month to month, she said.

“They have to work with imperfect data about what their paycheck’s going to be every month and still manage to meet what are rather fixed expenses and still make the discretionary purchases that everyone should be allowed to make,” she said.

No wiggle room

The single mother, who lives in a small South Texas town, has a 90-minute commute each day. At home, she has three growing adolescents.

To help make her budget stretch, she uses BNPL for discretionary purchases and for some necessities as well, including a recent $400 grocery bill.

For Ramirez, spreading out the cost via a Buy Now Pay Later app was a better alternative to putting the tab on a credit card, drawing a loan or forgoing payment on a utility bill. If all payments are made on time, most BNPL services don’t charge interest or late fees.

“I don’t want to do this forever, but it’s good to know that if I ever find myself in a rut in the future, then I can always use this again,” she said.

CNN Video’s Zach Wasser contributed to this report.

Correction: An earlier version of this article misstated estimates for the size of the BNPL industry. Transactions were projected to be at least $100 billion in 2021.