Buy Now, Pay Later for Merchants: Costs, Providers, and Fit

On this page 7 sections

1. How Buy Now, Pay Later for Merchants Works
2. BNPL Merchant Fees vs. Card Processing Costs
3. Affirm vs. Klarna vs. Afterpay vs. PayPal Pay Later
4. Which Industries and Ticket Sizes Benefit Most
5. Refunds, Returns, and Disputes With BNPL
6. Adding a Pay-Over-Time Checkout In-Store and Online
7. Is BNPL Right for Your Business?

Key takeaways

• BNPL providers pay you up front and carry the shopper's repayment risk. You pay for that through a merchant fee that is usually higher than card processing.
• Judge BNPL on extra margin from sales you would not otherwise close, not on how many shoppers choose it.
• Big-ticket, considered purchases like furniture and fine jewelry tend to benefit most. Low-ticket impulse buys benefit least.
• Before you sign, read the provider's refund, dispute and authorization terms. They differ from card network rules.

Buy now, pay later for merchants lets you offer financing to customers at checkout without lending your own money. A third-party provider approves the shopper, pays you, and collects the installments. This guide covers how BNPL works from your side of the counter, how BNPL merchant fees compare with card processing, how Affirm, Klarna, Afterpay and PayPal Pay Later differ, and which ticket sizes and industries are most likely to see a real return.

A note on numbers: BNPL pricing is negotiated, changes often, and varies by plan type and merchant. We don't quote provider rates here. Any figures below are illustrative. Confirm current terms directly with each provider before you sign.

How Buy Now, Pay Later for Merchants Works

From the shopper's view, BNPL is a quick application at checkout. From yours, it's a separate payment method with its own contract, fees, deposits and dispute process.

A typical transaction runs like this:

1. Shopper selects BNPL at your online checkout or in-store. In-store, this usually happens through a link, a QR code or a POS integration.
2. Provider approves or declines the shopper in real time and shows the plan terms.
3. You capture the order. Depending on the provider and your setup, that happens at purchase or when you ship or fulfill.
4. Provider funds you the purchase amount minus its merchant fee, on its own deposit schedule.
5. Shopper repays the provider in installments. If the shopper stops paying, that is generally the provider's problem, not yours.

That last point is the core of what you're buying. The provider takes on the credit risk of the repayment plan. You still own everything else: delivering the goods, honoring your return policy, and answering product disputes. For a side-by-side look at how this compares with layaway, see our guide to BNPL vs. layaway for retailers.

Common Plan Types

• Short-term installments: a purchase split into a few equal payments over several weeks, usually interest-free to the shopper.
• Pay later in full: one payment due after a set period.
• Longer monthly financing: installments over months, sometimes with interest charged to the shopper. Sometimes it's offered as a 0% promotion that the merchant subsidizes through a higher fee.

The plan types you enable affect both your cost and which purchases BNPL can realistically support.

BNPL Merchant Fees vs. Card Processing Costs

BNPL merchant fees are generally higher than what you pay to accept a credit card. In most cases the fee covers more than moving money. It also pays for credit risk, fraud risk on the repayment, and in many cases the cost of an interest-free offer to the shopper.

The comparison that matters isn't "BNPL rate vs. card rate." BNPL fees apply to every BNPL sale, including sales that would have happened on a credit card anyway. That makes your break-even question:

Does the gross profit on sales you would not have closed without BNPL exceed the extra fees you pay on all BNPL sales?

Illustrative example (hypothetical rates chosen for easy math, not quotes from any provider): A furniture store averages $2,000 tickets. Assume its card cost is about 3% and a BNPL plan costs 6%. Each BNPL sale costs $60 more than the same sale on a card. If the store runs 20 BNPL sales a month, that's $1,200 in extra fees. If 4 of those 20 sales would not have happened at all without financing, and each carries $800 in gross margin, BNPL added $3,200 in margin. If only 1 was truly new, BNPL lost money.

The extra cost is easy to calculate. The hard part is estimating which sales are actually new. Track it.

If you're working on card costs separately, programs like dual pricing for card transactions apply to card payments only. Your BNPL fee is governed by your BNPL agreement, so check that contract before passing any financing cost to shoppers. Card networks are also building installment features into cards themselves. For background, see our explainer on Visa's installment interchange changes.

Affirm vs. Klarna vs. Afterpay vs. PayPal Pay Later

All four are established BNPL options in the U.S., and each has its own emphasis. The table below summarizes general positioning. Product lineups, fees and availability change, so treat it as a starting checklist, not a rate sheet.

What to Compare Side by Side

Ask every provider the same questions in writing:

• Merchant fee for each plan type, and whether it changes with volume.
• Funding speed: how many business days after capture, whether deposits are daily or batched, and whether fees are netted from deposits.
• Authorization window: how long you can wait between approval and capture. This matters for special orders.
• Refund terms: whether any part of the original fee is returned when you refund.
• Dispute process: how shoppers dispute, what evidence you submit, and when you get debited.
• Integration: support for your ecommerce platform and your in-store POS.
• Marketing rules: required language and approved assets for advertising financing.

Some merchants offer more than one provider because shopper preference and approval rates vary. Each additional provider adds checkout clutter and one more deposit stream to reconcile, so start with one and add only if you can measure the difference.

Which Industries and Ticket Sizes Benefit Most

We don't have reliable independent data on BNPL conversion lifts by ticket size. Figures published by providers typically come from their own merchant base. The logic is still consistent: BNPL helps most when the price is a stretch against a shopper's monthly budget and the purchase is planned, not impulsive.

• Larger, considered purchases: strongest case. Splitting the payment can change whether the shopper buys now, later or never.
• Mid-range purchases: mixed. Short-term installments may nudge basket size, but more of these sales would have closed on a card.
• Small, impulse purchases: weakest case. The fee applies, and shoppers rarely need financing to say yes.

Furniture Stores

Furniture is a natural fit. Tickets are high, shoppers compare stores, and couples often decide over several visits. The operational wrinkle is timing. Special-order pieces can take weeks to arrive, so confirm whether you can capture at order or must wait until delivery, and whether the approval expires first. Pair that with your existing furniture store card fees and big-ticket rates so you know your true cost per payment method. MannyPay offers payment processing for furniture stores, and its mobile card terminals let delivery drivers take a card payment at the customer's door.

Jewelry and Diamonds

Engagement rings and fine jewelry are high-ticket, emotional and often time-sensitive purchases, which is where monthly financing gets used. Custom work complicates things. Deposits, resizing and remakes all need clear terms that line up with how the BNPL provider handles partial refunds. Review your engagement ring return policies before you enable financing. See also MannyPay's page on jewelry and diamond merchant accounts.

Apparel and Boutiques

Boutiques typically see smaller tickets and higher return rates, which is the weaker side of the BNPL math. Short-term installment plans are common in fashion, and some shoppers expect them, especially online. If you add BNPL, watch two numbers: how often BNPL orders come back, and whether the share of card sales shifting to BNPL grows faster than total sales.

E-Commerce Stores

Online, BNPL is mostly a checkout and messaging decision. Installment messaging on product pages can set expectations before the cart, but it adds visual noise. Test placement and measure it against your baseline. Our guide to checkout conversion rate benchmarks covers how to run that test cleanly.

Refunds, Returns, and Disputes With BNPL

This is where BNPL differs most from cards, and where merchants get surprised.

Refunds and Returns

• You refund through the provider, not through your card processor. The provider then adjusts or cancels the shopper's remaining installments.
• Partial refunds (one item from an order, or a price adjustment) need to be supported by both your platform and the provider's integration. Test this before launch.
• Fee treatment varies. Ask whether any of your original merchant fee comes back on a refund. Don't assume it does.
• Restocking fees and final-sale items should be stated clearly at checkout, just as with cards.

Disputes

When a BNPL shopper disputes a purchase, the dispute usually goes through the provider's own process, not the card network chargeback system you're used to. The provider may pause the shopper's payments, ask you for evidence, and debit you if the dispute is decided against you. Deadlines and evidence standards are set by the provider, so learn them up front.

The evidence that wins is mostly the same as for cards: delivery confirmation, signed receipts, clear return policies and customer communications. Our guide to how the chargeback lifecycle works is a useful model for organizing those records.

Reconciliation

BNPL deposits arrive separately from card settlements, often net of fees and refunds. Add each provider as its own line in your month-end process. Our guide to matching deposits to sales every month applies here too.

Adding a Pay-Over-Time Checkout In-Store and Online

Online

Most major ecommerce platforms support BNPL providers through apps, plugins or gateway settings. If you run Shopify payment integrations or WooCommerce, check which providers are available for your setup and how they interact with your existing card gateway. Keep card acceptance strong as well. Most of your revenue will still run through it, which is where online payment processing and a reliable gateway matter.

In-Store

In-store BNPL usually works one of two ways:

• Shopper-led: the customer applies on their phone through a link or QR code. Some providers then issue a one-time virtual card that you run on your terminal. Ask how fees work in this flow, since a card transaction may be involved.
• POS-integrated: BNPL appears as a tender option on your POS. Confirm whether your POS system supports the provider you want.

Launch Checklist

1. Get written fee schedules for every plan type you plan to enable.
2. Confirm funding timing, capture windows and refund fee treatment.
3. Test a full purchase, partial refund and full return in a sandbox or with a live test order.
4. Train staff on how to explain plans without making credit promises. Approval is the provider's decision.
5. Use the provider's approved marketing assets. Advertising financing terms can trigger federal and state consumer credit disclosure rules, so confirm with a qualified professional before running your own promotions.
6. Set a 60- to 90-day review to compare BNPL sales, returns and fees against your pre-launch baseline.

Is BNPL Right for Your Business?

BNPL is worth testing if you sell considered, higher-ticket items and you lose sales when shoppers hesitate at the total. It's harder to justify for low-ticket, impulse-driven stores, where most BNPL orders would have closed on a card anyway. Either way, decide with your own numbers: extra fees on all BNPL sales versus margin on the sales that are genuinely new.

BNPL works alongside your card processing, not instead of it. MannyPay provides merchant accounts, POS systems, terminals and gateways, with integrations for platforms like Shopify, WooCommerce and BigCommerce. To review your card processing setup before adding a pay-over-time option, request a free MannyPay quote. A MannyPay specialist will respond within one business day.

This article is general information, not legal, tax or financial advice. Confirm provider terms and any advertising or consumer credit requirements with the provider and a qualified professional.

ME

About the author

MannyPay Editorial Team

Beyond the Swipe's editorial desk researches the publication's guides and news and cites its sources in every article. Articles reviewed by a named MannyPay editor carry that editor's byline.

This article is for general educational purposes and is not legal, tax or financial advice. Card network rules and state laws change; confirm current requirements for your business.