Shop Pay Installments
Shop Pay Installments is a buy-now-pay-later (BNPL) feature integrated directly into Shopify checkout that lets shoppers split purchases of $50-$17,500 into 4 interest-free payments over 6 weeks, or longer-term monthly plans for larger purchases.
Understanding Shop Pay Installments
Shop Pay Installments is powered by Affirm and is available to eligible US-based Shopify merchants without separate setup. The feature appears as a payment option in checkout, and a price-breakdown widget can be added to product pages showing "or 4 payments of $X" near the price.
The conversion impact is meaningful. For products in the $50-500 range, displaying installment pricing typically lifts CVR 5-15% by reducing payment-shock at the price point. The effect is largest in mid-AOV categories (apparel, beauty, home decor) and smaller in low-AOV (where the benefit is marginal) and very high-AOV categories (where shoppers are already prepared for larger payments).
AOV impact is more nuanced. BNPL availability tends to lift AOV by 8-25% as shoppers add items they would otherwise have removed from cart due to price sensitivity. The trade-off is that BNPL transactions carry a higher merchant fee than standard credit card transactions (typically 5-7% vs 2.9%), so the unit economics need to support the cost.
Why It Matters for E-Commerce
For Shopify stores with average order values in the $50-500 range, displaying Shop Pay Installments is one of the highest-leverage product page additions available. The combination of higher CVR and higher AOV typically pays for the higher merchant fee multiple times over.
Related Terms
Buy Now Pay Later (BNPL) is a short-term financing method that allows customers to split their purchase into multiple interest-free installments, with the merchant receiving full payment upfront from the BNPL provider.
Checkout optimization is the process of reducing friction, confusion, and barriers in the checkout flow to maximize the percentage of shoppers who complete their purchase after initiating the checkout process.
Average Order Value (AOV) is the mean dollar amount spent each time a customer completes an order. It is calculated by dividing total revenue by the number of orders over a given period.
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GlossaryBuy Now Pay Later (BNPL)
Buy Now Pay Later (BNPL) is a short-term financing method that allows customers to split their purchase into multiple interest-free installments, with the merchant receiving full payment upfront from the BNPL provider.
GlossaryOrder Bumps
An order bump is an additional product or upgrade offer presented at the checkout page, designed to increase average order value by encouraging customers to add a complementary item with a single click.
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