Klarna vs Affirm: BNPL for E-commerce
BNPL (Buy Now, Pay Later) is the fastest-growing fintech segment. Klarna and Affirm are two leaders with different strategies. Klarna goes wide: 45 countries, 500K+ merchants. Affirm goes deep: US + Canada, but with high average order value and strong analytics. Which is better for your store?
Sites: klarna.com | affirm.com
Comparison Table
| Criteria | Klarna | Affirm |
|---|---|---|
| Geography | 45 countries | US + Canada |
| Active Users | 150M+ | 25M+ |
| Merchants | 500K+ | 300K+ |
| Average Order | -300 | -1,500 |
| BNPL Options | Pay in 4, Pay in 30d, Finance | Pay in 4, Monthly Finance |
| Buyer Interest | 0% | 0-36% APR |
| Merchant Fee | 2.5-4.5% | 3-6% |
| Integration | Fast (widget + API) | Fast (widget + API) |
| Affiliate Program | CPA -150 | Rev share 0.5-2% |
Where Klarna Wins
International Reach
45 countries vs two for Affirm. If your store sells to Europe, Australia, or Latin America — Klarna is the only choice. Affirm simply doesn’t work outside North America.
Mass Market and Fashion
Klarna is the favorite of fashion, beauty, and lifestyle brands. Young audience (18-35), predominantly women. The Klarna app isn’t just a payment tool — it’s a shopping platform with 150M users.
Marketing Tools
Sponsored Products in Klarna App, Creator Platform for influencer collabs, Audience Segmentation — Klarna has invested heavily in its marketing ecosystem. Affirm doesn’t offer this.
Buyer Simplicity
Klarna always offers 0% for buyers (with timely payments). Affirm can charge up to 36% APR — which deters some customers.
Lower Commission
2.5-4.5% for Klarna vs 3-6% for Affirm. At average order and 1,000 monthly transactions, the difference is -1,000.
Where Affirm Wins
Large Purchases
Affirm specializes in high-ticket items: Peloton (exercise bikes), Wayfair (furniture), Expedia (travel). Long-term installments up to 36 months enable -10,000 purchases.
Interest Transparency
Affirm shows the full credit cost BEFORE checkout. No hidden fees, no late payment penalties (only credit stops). Klarna is more aggressive with late fees.
Analytics and Reporting
Affirm provides detailed merchant analytics: what percentage chose BNPL, which products sell best on installments, how BNPL impacts LTV. Klarna’s reporting is more basic.
High-Ticket Conversion
On + items, Affirm shows 15-25% higher conversion than Klarna. High-ticket buyers trust Affirm more for brand and terms.
Affiliate Program
Revenue share of 0.5-2% of referred clients’ volume — for enterprise partners this can beat Klarna’s CPA. One large merchant processing M/mo brings in K-20K monthly.
Merchant Math
Example for a store with average order and 500 transactions/mo:
| Parameter | Klarna | Affirm |
|---|---|---|
| Monthly Volume | K | K |
| Commission | 3.5% = ,500 | 4.5% = ,500 |
| Conversion Lift | +30% | +25% |
| Extra BNPL Revenue | K | K |
| Net Gain | ,500 | ,500 |
At AOVs under , Klarna wins on lower fees and higher conversion. At + — Affirm takes the lead.
Affiliate Programs
| Parameter | Klarna | Affirm |
|---|---|---|
| Type | CPA (flat fee) | Revenue share |
| Rate | -150/lead | 0.5-2% of volume |
| Cookie Window | 30 days | 30 days |
| Platform | CJ, Impact, Partnerize | Impact |
| Min. Payout | -50 |
For content affiliates, Klarna is simpler: refer a merchant → get -150. Affirm appeals to enterprise consultants: one large client can bring K+/mo.
Which to Choose
Choose Klarna if:
- Your store is in Europe or sells globally
- Average order is -300 (fashion, cosmetics, electronics)
- Your audience is young (18-35)
- You want extra traffic from Klarna App
- You want to use the Creator Platform for promotion
Choose Affirm if:
- You sell in the US and Canada
- Average order is + (furniture, electronics, travel)
- Buyers value transparent terms
- You need detailed BNPL analytics
- You’re on Shopify (Affirm is a recommended partner)
Optimal: Integrate Both
Large stores (Shopify Plus, Salesforce Commerce Cloud) integrate both: Klarna for low-ticket and international sales, Affirm for high-ticket in North America.
Verdict
The choice between Klarna and Affirm is a choice between global reach and US market depth. Klarna wins on mass: more countries, more merchants, lower fees. Affirm wins on high-ticket niche and transparent terms. For most e-commerce projects, Klarna is the more practical choice.
Score: Klarna 6 — 4 Affirm