Klarna vs. Affirm: Plans, Merchant Costs and Disputes

Klarna and Affirm are buy now, pay later (BNPL) providers that let eligible shoppers split the cost of a purchase. You get paid under your payment agreement. Both offer short-term installment plans and longer financing in supported programs. Compare the plans your customers see, your costs and what happens after the sale.

This guide keeps shopper terms apart from merchant duties. Examples labeled US are US consumer terms. Company metrics carry their own period and region. To see Afterpay and Sezzle next to these two, use the BNPL provider comparison. For market data, see BNPL market statistics.

Short answer: Both offer Pay in 4 at 0% APR for eligible US purchases. Both also offer longer financing in supported programs. They differ in markets, program mix, merchant agreements and dispute workflows. So the right fit depends on your checkout, customers and integration, not on company size.

Are they the same company? No. Klarna Group plc is based in Stockholm, Sweden, and trades on the NYSE. Affirm Holdings is based in San Francisco and trades on Nasdaq. Each runs its own lending, checkout and dispute process.

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How Klarna and Affirm Payment Plans Work for Shoppers

Shopper plans decide what your customers see at checkout. These are consumer terms (US examples), not merchant processing rates.

• Pay in 4: Both advertise four payments at 0% APR for eligible US purchases. Klarna says later payments are collected every 14 days (Klarna US Pay in 4). Affirm states Pay in 4 is offered at 0% APR (Affirm US business disclosures).
• Longer financing: Affirm discloses longer financing at 0 to 36% APR, based on credit and the offer. Terms run up to 5 years, per the Federal Reserve FEDS Notes, June 2026. Klarna lists other payment and financing options by market and eligibility.
• Eligibility: Offers depend on the shopper, purchase and program. Check what shows up for your own baskets.

Klarna vs Affirm: Side-by-Side Comparison (2026)

Klarna vs Affirm by the Numbers: 2025 US Loan Mix

The Federal Reserve split each provider's 2025 US lending by loan type and by cost. One source and one period cover both. So this is a like-for-like view. The authors used public filings. Where a firm gave only global totals, they scaled them by its US share.

What the mix tells you: Klarna's US volume leans toward short, interest-free plans. Affirm's leans toward longer-term financing, with most of it carrying interest. Both still offer Pay in 4 and longer terms. So use the mix as a hint about typical checkout use, then test the offers your own baskets receive.

Klarna Features and Overview at a Glance

Klarna pairs payment options with a shopper experience. It can support discovery, checkout and order management after the sale. For you, the key question is which programs are turned on for the country, channel and integration you plan to launch. Judge a direct connection and one routed through a payment service provider each on its own terms.

How Does Klarna Work? Key Features

With US Klarna Pay in 4, eligible shoppers split a purchase into four interest-free payments. Klarna says it collects later payments every 14 days. Its US payment info also lists other options. One is monthly financing for eligible purchases. See the current Klarna plan details for the payment schedule and disclosures.

Keep shopper messages in sync with the program offered at checkout. Record the order lines, payment method, capture status, shipping events and refunds. These records give your support and payments teams a shared view of the purchase. The Klarna integration connects supported accounts to Chargeflow.

Affirm Overview and Features at a Glance

Affirm gives merchants an installment payment option. It can be matched to purchase amount, customer eligibility and the financing program on offer. Its business offering covers online and omnichannel use cases. Check the checkout display and financing terms that will apply to your products.

Affirm Key Features

Affirm's US disclosures state that Pay in 4 is offered at 0% APR. Other financing can range from 0 to 36% APR based on credit and eligibility. Payment options vary by merchant and purchase. A down payment may apply.

These are shopper financing terms, not your processing rate. Source: Affirm US business disclosures. The Affirm integration connects supported accounts to Chargeflow.

For high-value purchases or a catalog with mixed order sizes, test the payment options shown for typical baskets. Walk through the full payment journey: capture, refund, customer support and reconciliation. This shows your team how it fits day to day, not just at checkout.

Klarna Fees vs Affirm Fees: The Full Breakdown

Merchant fees for Klarna and Affirm depend on the pricing schedule for the product and integration you use. Three costs are easy to mix up. Keep them in separate columns of your model:

• A shopper's interest rate
• A promo financing offer
• A PSP's published processing rate

Klarna's network-distribution pricing documentation lists fixed and variable rates by program. Rates depend on country, currency, merchant category and payment program. That partner doc is not a universal rate card for direct merchants. Ask each provider or payment platform for the terms that apply to you. Then fill in the same worksheet for both proposals:

Calculate the Cost of a BNPL Offer

Use this formula: processing cost = captured sales x quoted percentage + captured transactions x quoted fixed fee. Then add any other contract charges and operating costs. Keep currency, refund assumptions and the financing program the same across proposals.

For illustration only: 500 orders averaging $120 produce $60,000 in captured sales. A hypothetical quote of 4% + $0.30 would produce $2,550 in base transaction charges. This is not a Klarna or Affirm quote. Swap those two inputs for your signed terms. Finance can then compare proposals without treating estimated fees as published provider rates.

Klarna vs Affirm Payments: The Key Differences

Both Klarna and Affirm let shoppers pay over time. Which one fits depends on the programs offered, eligible customers, integration route and how you operate. Compare the options shown for the same basket. Do not assume one is only short-term and the other only long-term.

• Payment options: check the schedule and disclosures for typical order sizes.
• Availability: confirm the countries, currencies, products and channels you plan to support.
• Customer experience: review checkout, payment reminders, cancellation and refunds.
• Merchant operations: confirm capture, settlement, case handling and report access.

For a broader payment-stack choice, our payment gateway comparison shows how BNPL methods and processors fit together. For another installment option, see Klarna vs Afterpay and Affirm vs Afterpay.

Four Checkout Scenarios

Test each scenario with both providers. No preferred provider is assumed.

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BNPL Chargeback Liability: What Merchants Are Actually on the Hook For

Three different events get called disputes:

• An order or fulfillment dispute with the merchant
• A borrower credit or repayment issue with the BNPL provider
• A card-network chargeback on the card that funds repayment

Only the last one follows card-network rules. If you need a refresher, start with what is a chargeback. To pick the right route for a case, see wallet and BNPL disputes.

Provider financing does not mean every return, non-receipt claim or disputed purchase has the same outcome. Check who is responsible for each event in your agreement. Then verify the workflow separately for each provider.

Some claims are friendly fraud, where a shopper disputes an order that arrived as described. For installment-specific risks, see our guide to buy now, pay later fraud.

Klarna: The Klarna dispute documentation describes these dispute stages: initiated, representment, pre-arbitration, arbitration and closed. Cases are handled through the Merchant Portal or by API file upload. Klarna reviews the evidence and decides. The process can depend on whether the transaction runs through a direct agreement or an acquiring partner. See the Klarna chargeback guide for operational context.

For direct US agreements, Klarna charges a $15 dispute fee only when a case closes against the merchant. If you use a PSP, it may pass that fee through.

Affirm: Per Affirm dispute resolution, merchants typically have 15 days from notice. Affirm sends reminders 7 days and 1 day before the due date. If a dispute is resolved against the merchant, Affirm refunds the customer. The merchant then pays Affirm back. A $15 dispute fee also applies. Affirm notes card-network processes can differ.

See the Affirm disputes guide. In every case, follow the deadline in the actual notice. Submit records that answer the stated reason. For the response process, see chargeback management.

Klarna vs Affirm: Which BNPL Provider Fits Your Checkout

Define the customer need first. Is it payment flexibility for everyday purchases? Financing for selected baskets? Or more checkout choice? Ask both providers to demo the same journey with your product types and target market. Then pick the setup that fits the customer experience and operating process you want.

Use this side-by-side as a starting point, not a verdict. Many merchants fit both columns.

If you promote products through shoppable catalogs, keep the financing messages in line with what each checkout actually offers.

You can test offering both if your platform and agreements allow it. Give each option a clear role. Then measure these with comparable cohorts:

• Incremental completed orders
• Contribution margin
• Refunds
• Support contacts
• Disputes

Keep changes to promotions and traffic sources visible so the results stay clear. Before you launch either option, confirm current terms, fees and dispute rules with each provider.

How Chargeflow Supports BNPL Merchants

The Klarna integration and Affirm integration connect supported accounts to Chargeflow's dedicated dispute operations. Chargeflow Automation adds automated recovery to your checkout and financing setup. It also adds evidence enrichment. Confirm the account connection and case coverage when you set up.

Keep orders, fulfillment, refunds and customer messages linked to the payment reference. This keeps your response process the same across BNPL and other payment methods. Review Chargeflow's integration documentation and schedule a demo to map the workflow for your stack.

Frequently Asked Questions: Klarna vs Affirm

What is the difference between Klarna and Affirm?

They are separate providers. They differ in markets, program mix, eligibility decisions, merchant agreements and dispute workflows. Both offer Pay in 4 at 0% APR for eligible US purchases. Both also offer longer financing in supported programs. Compare the actual offer for your market and basket. Do not assume the two are interchangeable.

Are Klarna and Affirm the same company?

No, Klarna and Affirm are separate, publicly listed companies. Klarna Group plc is headquartered in Stockholm, Sweden, and trades on the NYSE as KLAR. Affirm Holdings is headquartered in San Francisco and trades on Nasdaq as AFRM. Each sets its own shopper terms, merchant agreements and dispute rules.

Is Klarna or Affirm better?

Neither Klarna nor Affirm is better for every merchant. In 2025, 90% of Klarna's US loan volume carried 0% APR, so it often fits everyday baskets. 85% of Affirm's US volume was longer-term loans, so it often fits high-ticket orders. Test both with your own baskets, then pick the one that matches your customers.

Is Klarna or Affirm cheaper for merchants?

It depends on your agreement. How much Klarna or Affirm charges merchants comes from your contract or your payment platform's pricing. Rates vary by program, country and platform, so no single rate applies to every merchant. Compare signed proposals on total cost: transaction charges, refunds, settlement and dispute costs.

Is Klarna or Affirm cheaper for shoppers?

Both advertise Pay in 4 at 0% APR for eligible US purchases when payments are made on time. Affirm's longer financing is disclosed at 0 to 36% APR, based on credit and the offer. Terms depend on the shopper and the purchase.

Do Klarna and Affirm both offer Pay in 4?

Yes, both advertise Pay in 4 for eligible US purchases. Check the actual checkout offer. Look at eligibility, payment dates, disclosures and the total amount payable.

Is it hard to get approved for Klarna or Affirm?

Approval for Klarna or Affirm depends on the shopper, the purchase amount and the plan. Most BNPL plans use a soft credit check, which does not affect the shopper's credit score, according to the Federal Reserve. Neither provider guarantees approval, so a shopper can be approved for one basket and declined for another.

Does BNPL eliminate merchant disputes?

No. Financing does not remove order and fulfillment duties. Merchants may still need to provide delivery, cancellation, refund or service records. For example, Affirm typically gives merchants 15 days to respond to a dispute. Klarna disputes run through its Merchant Portal or API. Follow each provider's case instructions and your agreement.

Sources and Review Method

Reviewed October 19, 2026 against the primary sources linked beside the relevant claims. These include:

• The Federal Reserve's June 2026 BNPL note (loan volume, loan mix and 0% APR shares)
• Klarna's FY2025 results
• Affirm's FY2026 Form 10-K
• Each provider's dispute docs for merchants

This comparison explains documented features and business fit. The featured providers are Chargeflow partners. Examples are sample math for illustration. Workflow tests are suggested ways to evaluate, not claims of a controlled provider benchmark. Product availability and commercial terms depend on country, integration, plan and agreement. Confirm terms with each provider before you decide.