Best Buy Now Pay Later Software for Merchants: 10 BNPL Providers Compared

Buy now, pay later (BNPL) lets shoppers split a purchase into installments while the provider pays the merchant, usually minus a fee. Merchants adopt it to lift conversion and basket size, but it also adds fees, disclosure duties and customer service questions.

SaaSPodium's Buy Now Pay Later Software category lists ten providers. This guide compares them on region fit, integration effort and commercial questions to ask, using only positioning data from the directory. Ratings and pricing are not yet published for these listings, so we avoid numbers we cannot verify.

Provider	Tagline (per SaaSPodium)	Pricing type	Deployment
Klarna	The smooth way to pay.	Paid	Cloud, SaaS, Web
Affirm	Pay at your own pace.	Paid	Cloud, SaaS, Web
Afterpay	Shop now. Pay better.	Paid	Cloud, SaaS, Web
Sezzle	The highest shopper approval rates.	Paid	Cloud, SaaS, Web
Zip	Own it now, pay later.	Paid	Cloud, SaaS, Web
Splitit	Installments on your existing credit card.	Paid	Cloud, SaaS, Web
PayPal Pay in 4	Buy now, pay later with PayPal.	Paid	Cloud, SaaS, Web
Tabby	The Middle East's leading BNPL provider.	Paid	Cloud, SaaS, Web
Laybuy	Pay it in 6. Interest-free.	Paid	Cloud, SaaS, Web
Scalapay	If you love it, Scalapay it.	Paid	Cloud, SaaS, Web

How We Chose These BNPL Providers

We included every provider in SaaSPodium's BNPL category and assessed fit by region, installment model, integration effort and contract questions. Because ratings and starting prices are not yet published for these products, we avoided rankings and focused on selection criteria.

The criteria were: geographic coverage, repayment structure (pay in 4, pay in 6 or card-based installments), checkout platform integrations, merchant fee transparency, settlement speed, dispute handling and regulatory posture. The U.S. Consumer Financial Protection Bureau's report on BNPL found five surveyed firms originated 180 million loans totaling over $24 billion in 2021, a near tenfold increase from 2019, and flagged inconsistent consumer protections, so compliance matters.

Klarna

Klarna is a long-established BNPL brand that merchants add to checkout to offer pay-later and installment options. SaaSPodium lists its tagline as "The smooth way to pay." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Positioned on SaaSPodium as a checkout payment experience, so evaluate the shopper-facing flow and app visibility.
• Implementation: Check which pay-over-time and pay-later options are available in your sales regions.
• Commercial terms: Ask about merchant fees, settlement timing and chargeback or dispute handling in your contract.

Affirm

Affirm offers installment financing at checkout and is often shortlisted by merchants with higher average order values. SaaSPodium lists its tagline as "Pay at your own pace." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Installment-style offers suit larger baskets, so model conversion against the cost of the merchant fee.
• Implementation: Review how repayment terms are presented to shoppers to align with disclosure rules.
• Commercial terms: Confirm integration paths for your commerce platform and whether sandbox testing is available.

Afterpay

Afterpay is a widely recognized pay-in-installments service, now part of Block, that retailers use to encourage larger carts. SaaSPodium lists its tagline as "Shop now. Pay better." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Pay-in-installments model familiar to shoppers, which can reduce explanation at checkout.
• Implementation: Recognized consumer brand, so test whether its badge improves conversion for your audience.
• Commercial terms: Ask about eligible merchant categories and any limits on order value.

Sezzle

Sezzle describes itself as offering high shopper approval rates and is a common choice for small and mid-sized online merchants. SaaSPodium lists its tagline as "The highest shopper approval rates." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Approval rate claims are the vendor's own; verify performance in a pilot with your traffic.
• Implementation: Evaluate merchant onboarding steps and supported e-commerce platforms.
• Commercial terms: Compare fee structure and payout schedule against other providers.

Zip

Zip is an Australian-founded BNPL provider that also serves merchants in the United States and other markets. SaaSPodium lists its tagline as "Own it now, pay later." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Strong in markets where Zip has consumer awareness, so check regional coverage.
• Implementation: Review in-store and online options if you sell through multiple channels.
• Commercial terms: Ask about reporting detail and reconciliation exports for your finance team.

Splitit

Splitit lets shoppers split a purchase using their existing credit card, so the merchant is generally not extending a new line of credit to the buyer. SaaSPodium lists its tagline as "The installment payment solution that uses your existing credit card." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Card-based installments reduce the need for a separate credit application, per Splitit's positioning.
• Implementation: Appropriate for merchants who want installments without changing how shoppers pay.
• Commercial terms: Confirm card network and acquirer compatibility, plus how funds settle to your account.

PayPal Pay in 4

PayPal Pay in 4 adds a pay-later option for merchants that already accept PayPal, which simplifies adoption. SaaSPodium lists its tagline as "Buy now, pay later with PayPal." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Convenient for merchants already on PayPal checkout with existing integrations.
• Implementation: Check eligibility, supported countries and any merchant fees on PayPal's merchant pages.
• Commercial terms: Consider shopper familiarity and trust, since many buyers already hold PayPal accounts.

Tabby

Tabby positions itself as the leading BNPL provider in the Middle East, making it relevant for merchants selling in that region. SaaSPodium lists its tagline as "The Middle East's leading buy now, pay later provider." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Regional focus is a strength for Gulf-region e-commerce, according to its positioning.
• Implementation: Confirm supported countries, currencies and Arabic language checkout.
• Commercial terms: Ask about local compliance requirements and merchant onboarding timelines.

Laybuy

Laybuy markets a pay-in-6 interest-free installment option aimed at shoppers who prefer longer repayment schedules. SaaSPodium lists its tagline as "Pay it in 6. Interest-free." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Longer repayment schedule may suit mid-priced fashion and home categories.
• Implementation: Verify current availability and supported regions before planning a rollout.
• Commercial terms: Request merchant terms in writing and test the checkout flow end to end.

Scalapay

Scalapay is a BNPL provider active in European markets, giving merchants a pay-later option for shoppers in that region. SaaSPodium lists its tagline as "If you love it, Scalapay it." and categorizes it as a paid, cloud-based product. Read its SaaSPodium profile for the latest listing details.

• Positioning: Relevant for European e-commerce; confirm which countries and languages are supported.
• Implementation: Review integration options for your platform and plugin availability.
• Commercial terms: Ask about fees, payouts and compliance with local consumer credit rules.

How To Choose BNPL Software for Your Store

Pick a provider by matching four variables: where your customers live, how much they spend, which platform you run and what the all-in cost looks like. A pilot with real traffic will tell you more than any feature page.

• Region: Tabby suits the Middle East, Scalapay suits Europe, and Zip, Afterpay, Klarna, Affirm and Sezzle cover other markets; confirm country lists with each vendor.
• Order value: higher baskets often benefit from longer or installment-style terms.
• Platform: check native plugins for Shopify, WooCommerce, Magento or your custom checkout.
• Existing payments stack: PayPal Pay in 4 and Splitit can reduce friction if you already use PayPal or card-based flows.

Use this formula to test whether BNPL pays for itself:

Incremental Orders are extra orders attributable to BNPL (measured with an A/B test), Average Order Value is revenue per order, Gross Margin is the decimal margin on those orders, Total BNPL Sales is all sales paid through BNPL and Merchant Fee Rate is the provider's percentage fee. If Net Gain is positive, the program adds profit.

Compliance, Security and Risk Considerations

BNPL providers handle payment data and consumer credit decisions, so merchants should verify security certifications and regulatory responsibilities before launch. Most of the compliance burden sits with the provider, but disclosure and checkout design remain yours.

If your site handles card data directly, review the PCI DSS standard and prefer hosted checkout components that keep card data off your servers. Ask each provider about data sharing, since the CFPB highlighted data monetization as a consumer concern. Track returns and refunds closely: refunds on installment orders require reconciliation between your store, the provider and the shopper.

Implementation Checklist

A smooth BNPL rollout follows a short sequence: sandbox testing, checkout placement, staff training and measurement. Start with a limited launch so you can compare conversion and support tickets against a control group.

1. Request sandbox credentials and test approvals, declines and refunds.
2. Place messaging on product and cart pages, not just checkout.
3. Update return policies and customer service scripts.
4. Reconcile payouts weekly for the first month.
5. Review results after 30 to 60 days and renegotiate fees if volume is strong.

For a vendor starting point, review the official Klarna site, and compare alternatives on the SaaSPodium category page.

Frequently Asked Questions

How much does buy now pay later software cost for merchants?
BNPL providers typically charge merchants a percentage fee plus a fixed amount per transaction, and the rate varies by provider and contract. SaaSPodium does not publish fee data for these listings, so request written quotes.

How long does it take to add BNPL to an online store?
With a supported platform plugin, many merchants can finish integration and testing within days. Custom checkouts, multi-region setups and approval processes can take several weeks.

Which BNPL provider is best for the Middle East or Europe?
Tabby positions itself as the leading provider in the Middle East, and Scalapay focuses on European markets. Confirm country coverage, currencies and local regulatory requirements before you commit.