Buy Now, Pay Later (BNPL)

What Is Buy Now, Pay Later?

Buy now, pay later (BNPL) is a form of point-of-sale financing that allows consumers to purchase goods or services immediately and pay for them in installments over time. The most common structure splits a purchase into four equal payments: 25% at checkout, with the remaining three payments due at two-week intervals over six weeks. For the consumer, these short-term plans are typically interest-free.

BNPL emerged as an alternative to traditional credit cards, particularly for younger consumers who prefer transparent, fixed repayment schedules over revolving credit. Major providers include Klarna, Affirm, Afterpay (owned by Block), and PayPal Pay Later. As of 2025, over 91 million consumers in the United States have used a BNPL service, and the global market processes roughly $560 billion in gross merchandise volume annually.

Unlike traditional credit products, BNPL providers typically perform only a soft credit pull at checkout, which does not impact the consumer's credit score. This lower barrier to entry has driven rapid adoption but also raised questions about responsible lending, since the same consumer can hold simultaneous BNPL loans across multiple providers without any single lender seeing the full picture.

How It Works

A BNPL transaction involves three parties: the consumer, the merchant, and the BNPL provider. The provider acts as a payment facilitator, paying the merchant upfront (minus fees) while collecting installments from the consumer over time.

1. The consumer selects BNPL as a payment method at checkout and is approved via a soft credit check
2. The BNPL provider pays the merchant the full purchase amount, less a merchant discount rate of 2% to 8%
3. The consumer pays the first installment (typically 25%) immediately
4. The remaining installments are automatically charged to the consumer's linked payment method at two-week intervals
5. If the consumer misses a payment, the provider may charge a late fee or suspend the consumer's account

Revenue Model

BNPL providers generate revenue from several sources. The primary stream is the merchant discount rate: a fee of 2% to 8% per transaction, significantly higher than the 2.5% to 3.5% that credit card processors typically charge. Merchants accept these higher fees because BNPL drives measurable increases in conversion and order value.

Additional revenue streams include:

• Late fees: providers like Klarna charge $7 after 10 days, while Afterpay charges $10 per missed payment. Affirm charges no late fees at all, differentiating on transparency.
• Interest on longer-term plans: beyond the standard pay-in-4 model, providers offer 3 to 60 month financing at APRs ranging from 0% to 36%, depending on creditworthiness
• Interchange fees on branded cards: some providers issue their own payment cards and earn interchange on every transaction

A Typical BNPL Payment Flow

The following illustrates the financial flow of a $200 purchase using a standard pay-in-4 plan:

Purchase amount:          $200.00
Merchant discount (5%):  -$10.00
Merchant receives:        $190.00

Consumer payment schedule:
  Day 0  (checkout):      $50.00
  Day 14 (2 weeks):       $50.00
  Day 28 (4 weeks):       $50.00
  Day 42 (6 weeks):       $50.00
  Total paid:             $200.00

Provider gross margin:     $10.00 (merchant fee)
  minus: funding cost, credit losses, operations

The provider assumes the credit risk: if the consumer defaults, the merchant has already received their funds. This risk transfer is what merchants are paying for through the higher discount rate.

Impact on Merchants

BNPL has become a significant driver of e-commerce performance. Stripe tested BNPL across over 150,000 checkout sessions and found up to a 14% revenue increase when BNPL was displayed as a payment option. More than two-thirds of BNPL volume in the test came from net-new sales that would not have occurred without the option.

Key merchant benefits include:

• Conversion rate increases of 20% to 30%, with Stripe reporting 30% more conversions during the 2024 holiday season for merchants offering BNPL
• Average order value increases of 15% to 40%, as consumers feel more comfortable making larger purchases when the cost is spread over time
• Reduced cart abandonment: Shopify's Shop Pay Installments reduced cart abandonment by up to 28%
• New customer acquisition: up to 40% of BNPL transactions come from first-time customers at a given merchant

However, the cost is substantial. A survey of 2,500 merchants found that 63% view BNPL fees as a serious threat to profitability, since the 4% to 6% average discount rate nearly doubles the cost of accepting credit cards. For merchants operating on thin margins, this tradeoff between conversion and profitability requires careful analysis. For a deeper look at how payment processing fees affect merchants, see the research on card network economics.

Use Cases

E-Commerce and Retail

The most common BNPL use case is online retail, where the median purchase amount is approximately $135. Fashion, electronics, and home goods are the dominant categories. As of 2025, 52% of merchants offer BNPL as a checkout option, and the service represents 5% to 6% of global e-commerce payment volume.

In-Store Payments

BNPL has expanded beyond e-commerce into physical retail. Afterpay integrates directly into the Square point-of-sale ecosystem, and Klarna offers a virtual card that consumers can add to their mobile wallet for in-store purchases. This bridges the gap between online and offline payment orchestration.

Travel and Services

Higher-value purchases like flights, hotels, and healthcare increasingly offer BNPL options. Providers like Affirm offer financing up to $17,500 with terms of 3 to 60 months, making BNPL competitive with personal loans for larger transactions.

B2B and Trade Credit

BNPL principles are extending into business-to-business payments, where trade credit (net-30, net-60 terms) has always been the norm. Platforms are digitizing these workflows, offering automated installment collection and credit assessment for account-to-account payments between businesses.

Regulatory Landscape

BNPL has operated in a regulatory gray area for years, but jurisdictions worldwide are now bringing it under formal supervision.

United States

The Consumer Financial Protection Bureau (CFPB) issued an interpretive rule in 2024 classifying BNPL products under Regulation Z (Truth in Lending Act), which would have required them to comply with credit card regulations. In May 2025, the CFPB withdrew this rule, noting that open-end credit regulations were "ill-fitting" for BNPL products that function as closed-end loans. Regulation has since shifted to the state level: New York enacted a Buy-Now-Pay-Later Act in its 2025 fiscal budget, capping interest rates and directing the Department of Financial Services to set maximum fee limits. California and Maryland have also implemented state-specific BNPL regulations.

European Union

The EU's Consumer Credit Directive II (CCD2) eliminates the previous exemption for short-term, interest-free BNPL products. Member states must transpose CCD2 into national law by November 2025, with enforcement beginning November 2026. BNPL providers will face mandatory creditworthiness assessments and enhanced disclosure requirements for the first time.

United Kingdom and Australia

The UK's Financial Conduct Authority (FCA) published consultation paper CP25/23 in July 2025, proposing regulation of "deferred-payment credit." Final rules are expected in early 2026, requiring mandatory credit reporting, affordability checks, and access to the Financial Ombudsman Service. Australia's Treasury Laws Amendment Act took full effect in June 2025, requiring BNPL providers to hold credit licenses and conduct responsible lending assessments.

BNPL and Crypto

The intersection of BNPL and cryptocurrency is an emerging area, driven primarily by stablecoins as a settlement layer.

The most significant development is Klarna's announcement of KlarnaUSD, a USD-denominated stablecoin built on the Tempo blockchain and issued through Bridge (Stripe's stablecoin infrastructure subsidiary). Currently in testing with a public launch planned for 2026, KlarnaUSD aims to reduce cross-border settlement costs and connect Klarna to institutional capital markets. In December 2025, Klarna partnered with Coinbase to receive stablecoin-denominated funds from institutional investors.

On the DeFi side, protocols like Teller have built "Ape Now, Pay Later" products on Ethereum Layer 2 networks, enabling NFT purchases with partial down payments and installment repayment. These experiments demonstrate how embedded finance on blockchain rails could eventually replicate traditional BNPL functionality with programmable, transparent terms. For more on how stablecoins are reshaping payment infrastructure, see the research on stablecoin regulation frameworks.

Risks and Considerations

Consumer Debt Accumulation

BNPL's ease of approval creates a risk of overextension. According to CFPB data, 63% of BNPL borrowers held multiple simultaneous loans at some point during the year, and 33% used multiple providers concurrently. Because most BNPL debt is not reported to credit bureaus, this creates "phantom debt" invisible to other lenders. Roughly 34% to 41% of BNPL users report making at least one late payment, though 76% of late payments were less than one week overdue.

Credit Reporting Gaps

Historically, BNPL loans have not appeared on consumer credit reports, making it impossible for lenders to assess a borrower's full debt load. This is changing: FICO is introducing scoring models (FICO Score 10 BNPL) that incorporate BNPL data, and providers like Affirm and Klarna have begun reporting to Experian and TransUnion. Most users will see credit score changes of roughly plus or minus 10 points under the new models.

Merchant Cost Pressure

The merchant discount rate for BNPL (averaging 4% to 6%) is nearly double that of standard credit card processing. For low-margin businesses, this cost can erode the conversion benefits. Some providers are responding: Affirm launched "Affirm Direct" in March 2025 with lower fees for direct integrations, and Klarna introduced a revenue-share model where fees adjust based on actual sales lift.

Regulatory Uncertainty

The patchwork of state, national, and international regulations creates compliance complexity for BNPL providers operating across jurisdictions. Requirements for credit assessments, disclosure formats, and fee caps vary significantly between markets, increasing operational costs for providers and potentially limiting the availability of BNPL in some regions. This mirrors the regulatory challenges facing money services businesses and money transmitters in the payments space.

Chargeback and Fraud Risk

BNPL introduces additional complexity into chargeback resolution. When a consumer disputes a BNPL purchase, liability and process vary by provider, and merchants may face longer resolution timelines than with standard card transactions. Friendly fraud (disputing legitimate purchases) is also a growing concern, as consumers may dispute installments on items they have already received and used.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.