Shop Pay Installments alternatives for Shopify
Updated · How we collect this data
The most used Shop Pay Installments alternative on Shopify is Klarna (116,156 stores). We rank 3 buy now, pay later tools by how many live Shopify stores run them, out of 144,256 installs we detect.
What are the best Shop Pay Installments alternatives for Shopify stores?
Klarna is the most used Shop Pay Installments alternative on Shopify, installed on 116,156 active stores, 80.5% of all buy now, pay later installs we detect. Afterpay follows with 25,246 stores (17.5%). For comparison, Shop Pay Installments itself runs on 1,181 stores, 0.8% of the category. We rank alternatives by how many live Shopify stores actually use them (October 2026), measured across 144,256 buy now, pay later installs, rather than by features or affiliate deals. Some of these tools are also used alongside Shop Pay Installments, which the overlap column shows. Market leadership also varies by country: Klarna is strongest in Sweden (65.5% of stores) and Afterpay is strongest in New Zealand (25.9% of stores). Notable stores still on Shop Pay Installments include Princess Polly, Skullcandy, REEF.
Shop Pay Installments alternatives ranked by number of Shopify stores
| # | Alternative | Stores | Share of category | Also use Shop Pay Installments | Strongest market | |
|---|---|---|---|---|---|---|
| 1 | Klarna | 116,156 | 80.5% | 17.8% | Sweden (65.5%) | Compare |
| 2 | Afterpay | 25,246 | 17.5% | 6.9% | New Zealand (25.9%) | Compare |
| 3 | Affirm | 1,673 | 1.2% | 1.9% | United States (0.6%) | Compare |
"Also use Shop Pay Installments" = share of Shop Pay Installments stores that run the alternative at the same time. "Strongest market" = country (100+ stores) with the highest adoption.
Klarna
Klarna runs on 116,156 active Shopify stores (15.5% of all stores we track), 80.5% of buy now, pay later installs. Its largest market is United Kingdom with 20,447 stores. 210 stores run it together with Shop Pay Installments (17.8% of Shop Pay Installments stores). It is installed on more stores than Shop Pay Installments in United Kingdom (20,447 vs 99), Germany (19,083 vs 24), France (10,931 vs 22), Italy (10,230 vs 8). Stores using Klarna instead of Shop Pay Installments include Pilgrim India, Fashion Nova, Fender, Gymshark US. See the top stores using Klarna or compare Shop Pay Installments vs Klarna.
Afterpay
Afterpay runs on 25,246 active Shopify stores (3.4% of all stores we track), 17.5% of buy now, pay later installs. Its largest market is Australia with 8,798 stores. 82 stores run it together with Shop Pay Installments (6.9% of Shop Pay Installments stores). It is installed on more stores than Shop Pay Installments in Australia (8,798 vs 38), United States (7,236 vs 732), New Zealand (2,337 vs 10), United Kingdom (1,737 vs 99). Stores using Afterpay instead of Shop Pay Installments include Pilgrim India, Fashion Nova, JB Hi-Fi, Comfrt. See the top stores using Afterpay or compare Shop Pay Installments vs Afterpay.
Affirm
Affirm runs on 1,673 active Shopify stores (0.2% of all stores we track), 1.2% of buy now, pay later installs. Its largest market is United States with 1,281 stores. 22 stores run it together with Shop Pay Installments (1.9% of Shop Pay Installments stores). It is installed on more stores than Shop Pay Installments in United States (1,281 vs 732), Canada (134 vs 67), India (35 vs 19), Hong Kong SAR China (30 vs 8). Stores using Affirm instead of Shop Pay Installments include DTLR, Aventon Bikes, Secretlab US, Teddy Baldassarre. See the top stores using Affirm or compare Shop Pay Installments vs Affirm.
Rankings count live Shopify stores where each tool is detected in homepage code, from our crawl of every Shopify store with real traffic. They measure adoption, not quality or price. Methodology.