BNPL Comparison 2026
Klarna is the all-in-one BNPL powerhouse. Zip (formerly Quadpay) is the flat-fee alternative. Here's which one actually saves you more money.
Best for shoppers who prefer a flat fee over variable interest. $1–$6 per transaction, no APR, virtual card works everywhere, simple Pay in 4.
Best for shoppers who want the most options — Pay in 4, Pay in 30 days, monthly financing, and a browser extension that works at any store.
Last updated: 2026-04-28
| Feature | Zip | Klarna |
|---|---|---|
| Pay in 4 | ✓ | ✓ |
| Pay in 30 days | ✗ | ✓ |
| Monthly financing | ✗ | ✓ 6–36 months |
| Fee model | $1–$6 flat + $1/mo | 0% (late fee up to $7) |
| Interest / APR | None | 0% Pay in 4/30; APR on financing |
| Browser extension | ✗ | ✓ |
| Partner stores | 50,000+ | 500,000+ |
| Virtual card | ✓ | ✓ |
| In-store payments | ✓ | ✓ |
| Credit check | Soft only | Soft only |
| Spending limit | Up to $1,500 | Varies by plan |
| App rating (iOS) | 4.7★ | 4.7★ |
Zip charges a flat fee of $1–$6 per transaction depending on the purchase size, plus a $1/month account fee. There's no APR — the fee is the total cost. For a $100 purchase, you might pay $1. For a $500 purchase, you might pay $4–$6.
Klarna's Pay in 4 is free — $0 fee, 0% interest. The only cost is a late fee (up to $7) if you miss a payment. For the same $100–$500 purchases, Klarna is cheaper assuming you pay on time.
Where Zip's model wins: predictability. You know the exact cost upfront — no risk of accidentally selecting a monthly financing plan with APR. For users who want zero ambiguity, Zip's flat fee is psychologically simpler even if Klarna is numerically cheaper.
Klarna has 500,000+ partner merchants globally; Zip has around 50,000. But both offer virtual Visa cards, meaning you can technically use either at any online retailer. The merchant count matters more for in-app discovery — browsing the Klarna app for deals — than for actual purchase capability.
Klarna's browser extension is the real differentiator. It activates Pay in 4 on any checkout page, even at stores that have never heard of BNPL. Zip has no equivalent — you're limited to retailers where the virtual card works at checkout.
For everyday online shopping, both work fine. For maximum coverage — especially at niche or non-BNPL-friendly stores — Klarna's browser extension gives it a meaningful edge.
Zip (formerly Quadpay) rebranded across the US market in 2022 after its Australian parent company Zip Co acquired Quadpay in 2020. The product is essentially unchanged — Pay in 4 over 6 weeks with a flat fee model — but the branding and app have been unified globally.
If you're searching for Quadpay reviews or comparisons, Zip is the same service. Existing Quadpay accounts transitioned to Zip automatically. The fee structure, virtual card approach, and Pay in 4 mechanics are identical to what Quadpay users experienced.
For most shoppers, Klarna offers more value — more options, more stores, and Pay in 30. But if you want zero complexity and a predictable flat fee with no risk of accidentally choosing an APR plan, Zip delivers exactly that.