What is the difference between installments and buy now, pay later?

Installments traditionally start with a first payment at checkout, while buy now, pay later originally meant paying nothing upfront. Today most providers offer both formats, so the terms often overlap. The key differences are the lender, the duration and the applicable regulation.

The lender

A BNPL or split-payment provider lends to the shopper and pays the merchant upfront. With card installments, the issuer carries the credit. With a merchant-run plan, the merchant carries the risk.

The duration

Short plans, such as pay in 3 or 4, run over weeks. Longer plans run over months and usually carry interest.

The regulation

Consumer credit rules increasingly apply to both. In the EU, the revised Consumer Credit Directive brings most short interest-free plans under credit law, which narrows the regulatory gap between BNPL and installments.

What it means for payment operators

For your merchants, the label matters less than what their customers expect in each market and what each option costs. On the platform, both are payment methods activated through contracts, shown at checkout under your brand and reported like any other payment, so merchants can offer the formats that fit each market without separate integrations.